Abrégé

Methods of treating a subterranean formation are disclosed in which a polymer, such as guar, cross-linked by boron-based cross-linker is stabilized. The methods including preparing a treatment fluid containing a particulate material, and a polymer gel cross-linked by borate-based cross-linker, placing the treatment fluid into a subterranean formation via a wellbore, and placing a low viscosity fluid into the wellbore, the low viscosity fluid including stabilization additives in an effective amount to delay or prevent dissolution or dispersion of the polymer gel cross-linked by borate-based cross-linker.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/90 - Composés macromoléculaires d'origine naturelle, p. ex. polysaccharides, cellulose

Abrégé

Methods are described for treating a subterranean formation penetrated by a wellbore. The methods include injecting a treatment fluid into the wellbore. The treatment fluid has a pH in a range of from about 4.0 to about 9.0, and includes a carrier fluid, a proppant, and a degradable material which can improve proppant carrier properties of the treatment fluid. The degradable material may include stereocomplex polylactic acid, or stereocomplex polylactic acid stabilized by a carbodiimide compound. The degradable material is hydrolytically stable for at least 30 minutes at a temperature of from about 120°C to about 200°C, or from about 120°C to about 180°C.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

Methods of strengthening a proppant pack and resulting proppant pillar from both the inside and outside are described. Embodiments various additives to facilitate proppant/proppant interaction and modifying proppant surface to facilitate proppant interaction. Embodiments also include the use of protective coatings, some of which have embedded fibers or chemical moieties to divert flow from pillar.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
• E21B 43/267 - Maintien de fractures par étaiement

Abrégé

Methods of selection of materials that are used as a proppant for HPP fracturing treatments, also the procedure for the design of HPP treatment.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• C09K 8/62 - Compositions pour la formation de crevasses ou de fractures
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes

Abrégé

A packer assembly including a slip for anchoring and a mooring ring for enhancing the anchoring. The slip is configured with teeth for penetrating into a well tubular during anchoring whereas the mooring ring is configured with an outer surface for frictional engagement with the well tubular during anchoring. Thus, a degree of anchoring forces may be distributed through the mooring ring as opposed to through the isolated narrow region of the slip alone. Once more, the anchoring forces distributed through the mooring ring are translated in a penetration free manner relative the well tubular.

Classes IPC  ?

• E21B 33/12 - PackersBouchons
• E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
• E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage

Abrégé

The invention relates to the oil and gas industry, and to methods for optimizing the hydraulic permeability of a fracture. Proposed is a composite propping agent having a partially soluble coating. The composite propping agent consists of a material in the form of particles, where each particle contains: a propping agent particle base; an outer polymer coating which is soluble or partially soluble in wellbore fluid, and which is applied to the propping agent particle base; and also, located in or on the outer polymer coating, microparticles having encapsulated agents which activate the bonding of propping agent particles when same come into contact with each other or with a formation, and being located at least in a portion of the outer polymer coating; wherein, the non-activated portion of the outer polymer coating is dissolved in wellbore fluid. The invention additionally relates to a method for the treatment of a subterranean formation.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

A method is for determining information about liquid droplet fallout during operation of a gas-liquid flare apparatus. The method includes disposing a plurality of tiles in a spaced apart fashion over a monitoring area. A gas hydrocarbon fuel is injected into the gas-liquid flare apparatus to create a combustible flow, and a test fluid is injected into the gas-liquid flare apparatus such that the test fluid is dispersed into the combustible flow. The combustible flow is combusted in in the gas-liquid flare apparatus, resulting in fallout of liquid droplets of the test fluid onto the plurality of tiles. Images of the liquid droplets on the plurality of tiles are analyzed so as to determine the information about liquid droplet fallout in the monitoring area, using a computer. The information about liquid droplet fallout may be used to estimate combustion inefficiency of the gas-liquid flare apparatus.

Classes IPC  ?

• G01N 21/956 - Inspection de motifs sur la surface d'objets
• G01N 1/38 - Dilution, dispersion ou mélange des échantillons
• F23C 1/08 - Appareils à combustion spécialement adaptés à la combustion de plusieurs sortes de combustibles simultanément ou alternativement, au moins un des combustibles étant fluide ou étant un combustible solide en suspension dans l’air du combustible liquide et du combustible gazeux

Abrégé

Methods of treating a subterranean formation are disclosed that include introducing a treatment fluid including crimped fibers and a particulate material into a subterranean formation via a wellbore, and forming a plurality of bulky fibrous flocks including the crimped fibers and particulate material.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

The invention relates to the oil and gas industry. Proposed is a method for producing hydrophobic proppant agglomerates in a water-based liquid carrier, which do not mix with the liquid carrier and which are buoyant or partially buoyant therein, the method including mixing the liquid carrier with the following components: a) hydrophilic proppant particles; b) at least one liquid organic hydrophobic phase; c) an additive which lowers the specific weight; d) a surfactant; and e) fine binder particles; wherein the agglomerates are formed by agglomeration in the hydrophobic phase. The invention also relates to a method of using the produced hydrophobic proppant agglomerates in the hydraulic fracturing of a subterranean formation.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/88 - Composés macromoléculaires
• E21B 43/267 - Maintien de fractures par étaiement

Abrégé

Various implementations directed to analyzing a reservoir using fluid analysis are provided. In one implementation, a method may include determining mud gas logging (MGL) data based on drilling mud associated with a wellbore traversing a reservoir of interest. The method may also include determining first downhole fluid analysis (DFA) data based on a first reservoir fluid sample obtained at a first measurement station in the wellbore. The method may further include determining predicted DFA data for the wellbore based on the first DFA data. The method may additionally include determining second DFA data based on a second reservoir fluid sample obtained at a second measurement station in the wellbore. The method may further include analyzing the reservoir based on a comparison of the MGL data and a comparison of the second DFA data to the predicted DFA data.

Classes IPC  ?

• G01V 9/00 - Prospection ou détection par des procédés non prévus dans les groupes
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits

Abrégé

The applications relates to preparation of brines using non-aqueous solvents and methods of use thereof in oilfields.

Classes IPC  ?

• C09K 8/32 - Compositions de forage non aqueuses, p. ex. à base d'huile
• C09K 8/40 - Compositions d'espacement dites "spacers", p. ex. compositions utilisées pour séparer les masses de forage et de cimentation
• C09K 8/42 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits
• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement
• C09K 8/66 - Compositions à base d'eau ou de solvants polaires
• C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques

Abrégé

A method for treating a subterranean coalbed methane formation including injecting a composition containing an anionic viscoelastic surfactant and an acid- generating material, degrading the acid-generating material in the subterranean coalbed methane formation to release an acid, and changing a wettability of a surface of the subterranean coalbed methane formation from hydrophilic to hydrophobic due to a reaction of the acid with the anionic viscoelastic surfactant.

Classes IPC  ?

• E21B 43/22 - Emploi de produits chimiques ou à activité bactérienne
• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement

Abrégé

A technique facilitates the use of capacitors in a subterranean environment. A well tool is constructed for deployment in a borehole and comprises a capacitor bank. The capacitor bank is prepared by electrically linking capacitors in series and in parallel. Additionally, the capacitor bank is electrically coupled with a circuit board which may be mounted to a body of the well tool. The capacitor bank is mounted in a shock isolating relationship with respect to the body of the well tool so as to protect the capacitor bank during deployment and operation in a subterranean, e.g. wellbore, environment.

Classes IPC  ?

• E21B 43/1185 - Systèmes de mise à feu
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

A barrier surface for downhole elastomeric components is provided. In an implementation, an elastomeric component for downhole employment, such as a seal for an electric submersible pump (ESP), is composed of a perfluorinated elastomeric base material protected by a barrier surface layer composed of a fluoropolymer or a polyaryletherketone, to isolate the perfluorinated elastomeric base from high-temperature and chemically aggressive well fluids. The barrier surface layer increases the working life of the elastomeric component by preventing high-temperature hydration of polymer crosslinks in the underlying perfluorinated elastomeric base material, and by increasing lubricity of the outer surface. A blocking agent, such as nanoscale clay, carbon black, talc, mica, silica, graphene, graphite nanoplatelets, metal particles, or metal nanoparticles may also be added to the barrier surface layer to further armor the barrier surface against well fluids.

Classes IPC  ?

• E21B 10/00 - Trépans
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production

Abrégé

A method of producing hydrocarbons from a well includes optimizing a treatment schedule of a hydraulic fracturing process to be performed on a well based on a formation model that predicts a modification to a geological formation based by a hydraulic fracturing process and a modified formation model, based on the modification,that predicts production of a well. The method may further include updating a treatment schedule of the hydraulic fracturing process to form an updated treatment schedule, performing a hydraulic fracturing process on a well based on the updated treatment schedule to form a fractured well, and producing hydrocarbons from the fractured well.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• E21B 17/12 - Dispositifs pour placer ou retirer les manchons protecteurs
• G06F 19/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des applications spécifiques (spécialement adaptés à des fonctions spécifiques G06F 17/00;systèmes ou méthodes de traitement de données spécialement adaptés à des fins administratives, commerciales, financières, de gestion, de surveillance ou de prévision G06Q;informatique médicale G16H)

Abrégé

A method of treating a subterranean formation which includes: sealing at least one zone of a wellbore with at least one removable sealing agent; selectively removing the removable sealing agent from at least one target zone; and treating the at least one target zone is disclosed.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• E21B 33/12 - PackersBouchons
• C09K 8/00 - Compositions pour le forage des puits ou des trous de forageCompositions pour le traitement des puits ou des trous de forage, p. ex. pour des opérations de complétion ou de réparation

Abrégé

Fluid compositions comprising an aqueous base fluid, one or more fibers and one or more swellable polymers are useful for curing lost circulation in subterranean wells. One method for applying the fluid composition comprises circulating a drilling fluid in a wellbore, encountering a region in the wellbore from which drilling fluid escapes into a surrounding formation, preparing the composition, placing the composition in the wellbore adjacent to the region from which drilling fluid escapes, allowing the fibers to penetrate formation openings and form a bridge, and introducing an activation fluid that causes the swellable polymers to expand, thereby forming a plug.

Classes IPC  ?

• C09K 8/487 - Additifs régulant les pertes de fluideAdditifs pour réduire ou empêcher la perte de circulation
• E21B 33/138 - Plâtrage de la paroi du trou de forageInjections dans la formation

Abrégé

A fracture treatment method includes forming propped regions having an optimized conductivity. Also disclosed are systems to treat a fracture interval and to produce reservoir fluids from a formation.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes

Abrégé

Methods of treating a subterranean formation are disclosed that include introducing a treatment fluid including shaped particle and/or shaped uniform particles into a subterranean formation via a wellbore, and creating a plug including the shaped particle and/or shaped uniform particles of the treatment fluid.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/70 - Compositions pour la formation de crevasses ou de fractures caractérisées par leur forme ou par la forme de leurs composants, p. ex. mousses

Abrégé

A narrow bandpass filter that may be used in a mid-infrared sensor for monitoring a species, which may be a component of a fluid or a solid material. The filter comprises a cavity comprising a low refractive index material. By providing a high ratio of low refractive index material in the filter with respective to high refractive index material, the filter is configured so that wavelength transmission remains constant with varying temperature. Materials used for the low and/or high refractive index provide a temperature invariant filter that transmits mid-infrared spectra without serious degradation.

Classes IPC  ?

• G02B 5/20 - Filtres

Abrégé

A packer assembly constructed of individual slip segments which interlock to permit radial expansion and restrict axial movement. The slip segments are moved outwardly to set the packer by an actuator. Individual slip segments are easily and inexpensively manufactured.

Classes IPC  ?

• E21B 33/12 - PackersBouchons
• E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
• E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers

Abrégé

Rotation control for an electric submersible pump (ESP) is provided. In one possible implementation, a controller dynamically measures a motor condition, such as an ongoing temperature, of a turned-off AC motor of an electric submersible pump (ESP) and injects a current to the motor to lock or slow down passive rotation of the motor caused by flow-through pumped from another ESP in the well. The controller dynamically varies the current to maintain the temperature of the motor below a safety threshold, in order to lock the ESP for long durations. The controller may apply a current through certain phase(s) of the AC motor, and then switch phases when a temperature of motor windings associated with the current phase exceed a given threshold. The controller may taper the current to obtain a desired balance of rotational lock or slowdown versus rising motor temperature caused by the application of the locking current.

Classes IPC  ?

• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée
• F04D 13/10 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée adaptés pour l'utilisation dans les forages de mine
• F04D 15/00 - Commande, p. ex. régulation de pompes, d'installations ou de systèmes de pompage

Abrégé

Representative implementations of devices and techniques provide enhanced electrical conductor insulation. For example, the enhanced electrical conductor insulation is resistant to hydrolysis which can accompany the use of the electrical conductor in a harsh environment, such as a high-temperature and/or high-pressure environment. In one example, the enhanced insulation can reduce a degradation rate of a dielectric layer of the electrical conductor. In other examples, the devices and techniques can improve hydrolysis resistance for other components of an electrical motor, such as an electric submersible pump motor, for instance.

Classes IPC  ?

• H01R 4/70 - Isolation des connexions
• E21B 17/02 - AccouplementsJoints
• E21B 19/16 - Branchement ou débranchement des accouplements de tubes ou de joints

Abrégé

An electric submersible pump motor can include a housing; a cavity defined at least in part by the housing; a rotor disposed in the cavity; a stator disposed in the cavity where the stator includes stator laminations and stator windings disposed at least in part in slots of the stator laminations; and stator slot liners disposed at least in part in the slots of the stator laminations where the stator slot liners include polytetrafluoroethylene and/or expanded polytetrafluoroethylene.

Classes IPC  ?

• H02K 1/12 - Parties fixes du circuit magnétique
• H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques

Abrégé

A sensor assembly for passive detections of downhole well features. Embodiments include a casing collar locator assembly that utilizes fiber optics in combination with a magneto-responsive sensor to detect casing collars and provide real-time location information in a well. The sensor may be configured to work with a poled monolithic structure that is dimensionally responsive to voltage in a way that substantially eliminates noise during detections. Additionally, the sensor may be intentionally imbalanced, utilizing multiple fibers of different lengths and multiple wavelength monitoring so as to provide enhanced directional information as well as allow operators to decipher and address circumstances of polarization fade.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G01V 3/18 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage
• G01V 3/38 - Traitement de données, p. ex. pour l'analyse, pour l'interprétation ou pour la correction

Abrégé

Methods and apparatuses for hydraulically fracturing a subterranean wellbore while drilling and/or tripping are disclosed. A method for hydraulically fracturing a subterranean formation may include rotating a drill string to drill the wellbore and hydraulically fracturing the subterranean formation at a plurality of axially spaced locations along the wellbore while tripping the drill string out of the wellbore. The drill string may include a hydraulic fracturing assembly. The hydraulic fracturing operation may include translating the drill string in an uphole direction so that a set of frac ports in the hydraulic fracturing assembly is adjacent a region of the formation selected for fracturing, expanding at least one pair of packers to seal an annular region of the wellbore exterior to the frac ports, and pumping fracturing fluid downhole through the frac ports to hydraulically fracture the subterranean formation.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• E21B 33/12 - PackersBouchons
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production

Abrégé

A technique facilitates rigless deployment of a pumping system, e.g. an electric submersible pumping system, to a desired downhole location. The pumping system is coupled to an electrical cable which is routed through an injector head. The pumping system is supported on the electrical cable and conveyed downhole to the desired position in a wellbore via the injection head. The system and methodology enable deployment of the electrical cable directly through the injector head without coiled tubing.

Classes IPC  ?

• E21B 19/02 - Dispositifs de suspension des tiges ou des câbles
• E21B 23/14 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour déplacer un câble ou un outil manœuvré par câble, p. ex. pour les opérations de diagraphie ou de perforation dans les puits déviés

Abrégé

A technique facilitates construction and use of power cables, such as power cables employed in downhole well applications. A power cable is formed with a plurality of conductors in which each conductor has sides extending outwardly from a center region of the power cable. The sides form an angle with respect to each other to facilitate a compact arrangement of electrical conductors. Additionally, the individual electrical conductors may be insulated, and the plurality of conductors may be surrounded with at least one outer protective layer.

Classes IPC  ?

• E21B 47/02 - Détermination de l'inclinaison ou de la direction
• H01B 9/06 - Câbles sous pression de gazCâbles sous pression d'huileCâbles utilisés dans des conduits sous pression de fluides
• H04B 3/02 - Systèmes à ligne de transmission Détails

Abrégé

A technique facilitates coupling of pumping system sections which may be in the form of electric submersible pumping system sections. Adjacent pumping system sections are coupled together by a connector which comprises a base and a head threadably engaged with the base. The connector also comprises a torque lock mechanism which engages both the base and the head to prevent unwanted relative rotation between the base and the head. The torque lock mechanism thus secures the coupling against inadvertent separation after the head and the base are threadably engaged.

Classes IPC  ?

• E21B 17/02 - AccouplementsJoints
• E21B 19/16 - Branchement ou débranchement des accouplements de tubes ou de joints

Abrégé

A method of treating a subterranean formation from a well, the method which comprises preparing a proppant slurry which comprises (a) proppant particles and (b) a first carrier fluid; preparing a proppant free injection liquid which comprises a second carrier fluid wherein the first and second carrier fluids are immiscible and wherein no proppant is intentionally added to the proppant free injection liquid; and injecting the proppant slurry and the proppant free injection liquid into the formation, is provided.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

A co-molded seal element can include a first portion that includes a first polymeric material; a second portion that includes a second polymeric material; and an interface portion that includes crosslinks between the first polymeric material and the second polymeric material.

Classes IPC  ?

• F16J 15/02 - Joints d'étanchéité entre surfaces immobiles entre elles
• F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production

Abrégé

A test method and apparatus employs a microfluidic device to characterize properties of a fluid. The microfluidic device has an inlet port, an outlet port, and a microchannel as part of a fluid path between the inlet port and the outlet port. While a fluid is introduced into the microchannel, the fluid temperature is maintained while the fluid pressure in the microchannel is varied to characterize the properties of the fluid in the microchannel. The properties of the fluid can relate to a scale onset condition of the fluid at the pressure of the flow through the microchannel. In one aspect, fluid pressure in the microchannel is maintained while the fluid temperature is varied to characterize the properties of the fluid. In another aspect, flow rate of the fluid through the microchannel is varied while the fluid temperature is maintained to characterize the properties of the fluid in the microchannel.

Classes IPC  ?

• G01N 11/00 - Recherche des propriétés d'écoulement des matériaux, p. ex. la viscosité, la plasticitéAnalyse des matériaux en déterminant les propriétés d'écoulement
• G01N 11/02 - Recherche des propriétés d'écoulement des matériaux, p. ex. la viscosité, la plasticitéAnalyse des matériaux en déterminant les propriétés d'écoulement en mesurant l'écoulement du matériau
• G01N 7/00 - Analyse des matériaux en mesurant la pression ou le volume d'un gaz ou d'une vapeur
• G01N 21/84 - Systèmes spécialement adaptés à des applications particulières
• B81B 1/00 - Dispositifs sans éléments mobiles ou flexibles, p. ex. dispositifs capillaires microscopiques

Abrégé

An electric submersible pump (ESP) can include a shaft; an electric motor configured to rotatably drive the shaft; a housing; a stack of diffusers disposed in the housing; impellers operatively coupled to the shaft; and a pressure balance sleeve disposed at least in part between one of the diffusers and one of the impellers where the pressure balance sleeve includes a radially facing opening that, in an open state, is in fluid communication with a fluid recirculation passage of the one of the impellers.

Classes IPC  ?

• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée

Abrégé

Methods for treating and restoring zonal isolation in a subterranean well involve the use of a well treatment tool that may drill one or more holes in casing and inject a treatment fluid that may seal cracks or fissures in the cement sheath behind the casing. Microannuli may also be sealed. The treatment fluids may be solids free or in the form of suspensions containing solids having a particle size between 1 nm and 100 nm.

Classes IPC  ?

• C09K 8/42 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits
• E21B 27/02 - Cuillers de déchargement, c.-à-d. récipients pour déposer des substances, p. ex. du ciment ou des acides
• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues
• C09K 8/52 - Compositions pour éviter, limiter ou éliminer les dépôts, p. ex. pour le nettoyage

Abrégé

A method of reservoir analysis for a reservoir of interest, which includes obtaining a crude oil sample originating from the reservoir of interest. Oil-water interfacial tension of the crude oil sample is measured. An empirical model that relates oil-water interfacial tension of the crude oil sample to concentration of at least one organic acid species in the crude oil sample is calibrated based on the measured oil-water interfacial tension of the crude oil sample. The concentration of the at least one organic acid species in the crude oil sample may be absolute or relative. At least one reservoir parameter characteristic of the reservoir of interest can be calculated based on the calibrated empirical model.

Classes IPC  ?

• G01N 33/28 - Huiles
• G01N 31/00 - Recherche ou analyse des matériaux non biologiques par l'emploi des procédés chimiques spécifiés dans les sous-groupesAppareils spécialement adaptés à de tels procédés

Abrégé

A tracer particle for use in the exploration, production, transportation and/or storage of oil and/or gas, the tracer particle comprising a proppant material, a coating layer at least partially surrounding the proppant material and a tracer material within the coating layer, the tracer material having an identifiable DNA. There is also disclosed a tracer nanoparticle for use in the exploration, production, transportation and/or storage of oil and/or gas, the tracer nanoparticle comprising a tracer material having an identifiable DNA, and at least one chemical moiety located in at least an outer surface of the tracer nanoparticle, the at least one chemical moiety comprising at least one protein, at least one antibody, and/or at least one hydroxyl moiety. Methods and apparatus of tracing fluid during the exploration, production, transport and/or storage of oil and/or gas are also disclosed.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C12Q 1/68 - Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismesCompositions à cet effetProcédés pour préparer ces compositions faisant intervenir des acides nucléiques
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• C09K 8/03 - Additifs spécifiques à usage général dans les compositions pour le forage des puits

Abrégé

Evaluating material sample structural changes resulting from acting upon a sample involving scanning at least one sample of material before and after acting upon same, and correspondingly obtaining a first image and a second image of each sample. Combining both images in full resolution, using at least one portion of the first image and one portion of the second image of each sample, said portions corresponding to the same area of the sample. Analyzing the combined images and evaluating the changes which have taken place in each sample as a result of being acted upon.

Classes IPC  ?

• G01B 11/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la rugosité ou l'irrégularité des surfaces

Abrégé

A borehole seismic sensing fiber optic tool comprises a fiber optic cable to be lowered in a borehole and at least one resonator array disposed on the fiber optic cable. Each array comprises at least one active element having resonance self-frequency in a range of frequencies of seismic waves to be measured.

Classes IPC  ?

• G01V 8/24 - Détection, p. ex. en utilisant des barrières de lumière en utilisant plusieurs émetteurs ou récepteurs en utilisant des fibres optiques
• G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p. ex. des moyens optiques

Abrégé

Distributed fiber optic monitoring of vibration within a region of interest includes acquiring distributed vibration data from optical backscatter generated in response to an interrogating pulse of optical energy launched into an optical fiber deployed in a region of interest having a fluid flow, and generating a noise log from the distributed vibration data that includes a plurality of traces representing vibration energy above or below selected frequencies at a plurality of locations in the region of interest. Characteristics of the fluid flow in the region of interest are then determined based on the noise log.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G01V 1/40 - SéismologieProspection ou détection sismique ou acoustique spécialement adaptées au carottage
• G01V 1/48 - Traitement des données

Abrégé

Cement slurries are prepared that comprise water and a blend comprising an inorganic cement and at least one mineral. The slurries may have a solid volume fraction between 0.3 and 0.4, and the cement may be present at concentrations between 30% and 70% by volume of blend. The slurries may be placed in a subterranean well and allowed to harden and form set cements.

Classes IPC  ?

• C09K 8/467 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits contenant des liants inorganiques, p. ex. ciment Portland contenant des additifs pour des utilisations spécifiques
• C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
• C09K 8/48 - Additifs pour l'augmentation de la densité ou du poids

Abrégé

In accordance to one or more aspects of the disclosure an indexing track for controlling a dual valve assembly includes a plurality of interconnected pressure-up and pressure-down slots that define sequence paths to translate the pin and to actuate the dual valve assembly to a first position when the pin is in a first track position, to a second position when the pin is in a mid-track position, and a third position when the pin is in a third track position.

Classes IPC  ?

• E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits

Abrégé

A permanent magnet rotor for electric submersible pumps is provided. An example 2-pole rotor pack for an ESP has curved north and south pole magnets each spanning, for example, 150 degrees of a circumference of the rotor. A high-temperature glue containing a damping agent protects the magnets from cracking during thermal cycling. A magnetically transparent, high-strength amorphous or fiber-reinforced wrap is applied around the rotor to bind the magnets to the rotor and protect brittle magnets from high centrifugal forces. A layer of tough, high-temperature nylon or polyphenylene sulfide (PPS) may encase the outside of the 2-pole rotor pack to protect from corrosives, abrasives, and aggressive chemicals in a well. The 2-pole rotor can rotate twice as fast as a 4-pole rotor at the same AC frequency, or can use one-half the AC frequency as a 4-pole rotor to rotate the same speed as a 4-pole rotor.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 21/14 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits
• F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques

Abrégé

The claimed invention relates to downhole systems for extracting various fluids and, in particular, for extracting fluid from a hydrocarbon-containing formation by hydraulic fracturing. According to the proposed method, a hydraulic fracturing fluid which does not contain a proppant is pumped into a wellbore, thus creating a fracture in a formation, and hydraulic fracturing fluid is introduced into the wellbore in a pulsed mode, said pulsed mode entailing the presence of at least one pulse for the injection of a hydraulic fracturing fluid which contains a proppant and at least one pulse for the injection of a hydraulic fracturing fluid which does not contain a proppant. Also proposed are methods for extracting and pumping a fluid. Also proposed are methods for extracting, pumping and recovering fluids using a hydraulic fracturing method. The proposed method makes it possible to extend the life of a well by reducing the effect of liquid on the walls of a fracture and on proppant clusters.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• E21B 28/00 - Dispositions pour la génération de vibrations pour les trous de forage ou les puits, p. ex. pour activer la production
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes

Abrégé

This invention relates to the oil and gas industry, and more particularly to a composite proppant modified by a polymer carrier for improved transport properties and the delayed release of inhibitors from the proppant. Proposed is a composite proppant, comprising at least one solid particle attached to at least one polymer carrier, which reduces the settling rate of the composite proppant, said polymer carrier comprising admixtures of at least one inhibitor of the formation of inorganic or organic deposits. The invention also relates to a method for producing such a composite proppant and to methods for using said proppant in the hydraulic fracturing of subterranean formations and the treatment of organic minerals during borehole mining after the hydraulic fracturing of a subterranean formation.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
• E21B 43/267 - Maintien de fractures par étaiement
• E21B 37/06 - Procédés ou appareils pour nettoyer les trous de forage ou les puits utilisant des moyens chimiques pour empêcher ou limiter le dépôt de paraffine ou de substances analogues

Abrégé

Vertical seismic profiling data from a geological environment are registered, at least one evaluation is made of a local dip of a model of the geological environment, and at least one dynamic evaluation of the dip is made for at least one type of wave excited by sources and registered by receivers, using wave motion direction vectors. The difference is calculated between the evaluation of the local dip of the model and the dynamic evaluation of the dip. At least one weight coefficient is calculated based on the difference between the evaluation of the local dip of the model and the dynamic evaluation of the dip, and the resultant weight coefficient is used for determining at least one formula for forming images using elastic waves, applying reverse-time migration and taking into consideration the dip angle of the geological environment. The derived formula is applied to the obtained vertical seismic profiling data, with the subsequent formation of at least one image of the geological strata.

Classes IPC  ?

• G01V 1/28 - Traitement des données sismiques, p. ex. pour l’interprétation ou pour la détection d’événements
• G06T 15/00 - Rendu d'images tridimensionnelles [3D]

Abrégé

A technique facilitates downhole operations, such as cementing operations. The technique utilizes a running string having a hydraulically actuated setting tool. A liner is suspended from the running string via a releasable mechanism. A liner hanger assembly is coupled with the liner and mechanically linked with the hydraulically actuated setting tool. Hydraulic actuation of the setting tool causes mechanical actuation of the liner hanger assembly. The structure enables use of a liner hanger assembly which does not have a hydraulic actuation piston.

Classes IPC  ?

• E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits

Abrégé

A technique facilitates pressure containment with a retrievable cement bushing. The retrievable cement bushing comprises a body having an internal longitudinal passage. Additionally, the retrievable cement bushing comprises an engagement lug which cooperates with a sleeve. The engagement lug is mounted on the body and is movable to a radially outward position for engagement with a corresponding portion of a surrounding wall, e.g an internal packer wall. The sleeve is sized to receive a slick joint therethrough and is movable to a radially inward position relative to the engagement lug so as to hold the engagement lug in the radially outward position. The sleeve protects the slick joint from inwardly directed loading via the engagement lug when the retrievable cement bushing is subjected to differential pressures.

Classes IPC  ?

• E21B 33/12 - PackersBouchons
• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues
• E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers

Abrégé

Proppant transport assist in low viscosity treatment fluids. Treatment fluids and methods use fiber to inhibit proppant settling without an unacceptable bridging tendency.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

Proppant transport assist in low viscosity treatment fluids. Treatment fluids and methods use fiber containing 0.1 to 20 wt% silicones to inhibit proppant settling without an unacceptable bridging tendency.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

A technique facilitates operation of a running string of the type used to run and set a liner hanger system in a wellbore. The running string comprises a pressure equalizer sub. The pressure equalizer sub is constructed to equalize pressure between an exterior and an interior of the running string. The exterior of the running string may be the annulus between the running string and a liner or liner component of the liner hanger system. The pressure equalizer sub has components and features constructed and arranged to provide a simple and dependable technique for pressure equalization. Additionally, the pressure equalizer sub enables pressure equalization in a passive manner that does not involve operator action.

Classes IPC  ?

• E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits

Abrégé

Cement compositions comprise water, a hydraulic cement and an encapsulated silicate. The silicate may be released from the capsules by exposure to mechanical stress, heat, dissolution, swelling or coating degradation. Upon release, the silicate reacts with calcium hydroxide in the cement matrix to form calcium silicate hydrate. The consumption of calcium hydroxide renders the set cement more resistant to deterioration upon exposure to carbon dioxide, sulfates or both.

Classes IPC  ?

• E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage

Abrégé

Adding shapeable particles to drilling fluids may be useful for curing lost circulation. When the shapeable particles are pumped downhole through the drillpipe and the drillbit, they may deform when exposed to shear as they pass through the drillbit nozzles. While circulating back toward the surface they may relax at least partially and assume the shape of cracks or voids they encounter along the formation wall, thereby stopping losses.

Classes IPC  ?

• C09K 8/00 - Compositions pour le forage des puits ou des trous de forageCompositions pour le traitement des puits ou des trous de forage, p. ex. pour des opérations de complétion ou de réparation
• C09K 8/035 - Additifs organiques
• E21B 33/138 - Plâtrage de la paroi du trou de forageInjections dans la formation

Abrégé

The present invention can be used in the oil and gas industry and relates to a method for modifying and delivering proppants (propping agents) during well operations, in particular hydraulic fracturing and/or gravel packing. By modifying the surface of a proppant using an emulsified treatment material, the invention makes it possible, in the case of hydraulic fracturing operations, to provide the efficient delivery of proppant deep into remote regions of a fracture and also to provide the non-uniform distribution of proppant by means of particle aggregation, and makes it possible, in the case of gravel packing operations, to maintain circulation of a proppant suspension for the uniform deposition of proppant in the requisite locations in a wellbore. The present invention is intended to solve the problems of creating: a method for modifying the surface of a propping agent during well operations; a method for delivering a propping agent into a subsurface formation; a hydraulic fracturing method; and also a gravel packing method.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
• E21B 43/267 - Maintien de fractures par étaiement

Abrégé

Cement compositions with reduced porosity and improved strength comprise water, a hydraulic cement and an encapsulated silicate. The silicate may be released from the capsules by exposure to mechanical stress, heat, dissolution, swelling or coating degradation. Upon release, the silicate reacts with calcium hydroxide in the cement matrix to form calcium silicate hydrate. The formation of additional calcium silicate hydrate may fill voids in the set cement.

Classes IPC  ?

• E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage

Abrégé

The invention relates to the extraction of fluids from underground formations by means of hydraulic fracturing. The technical aim consists in improving the non-uniform placement of a propping agent. The propping agent consists of a material in the form of particles having a base, an outer water-soluble coating and a gelling agent, said gelling agent being immersed in the water-soluble coating in such a way that it is released from the base of a particle when the water-soluble coating is dissolved or destroyed upon introduction of the propping agent into portions of a hydraulic fracturing fluid. A method for the heterogeneous placement of a propping agent in a hydraulic fracture includes pumping alternating portions of hydraulic fracturing fluid, said portions containing and not containing the aforementioned particles, into a layer which is to undergo fracturing, under a pressure which exceeds a hydraulic fracturing pressure, through a plurality of clusters of perforations in a wellbore in the layer to be fractured, where the portions of hydraulic fracturing fluid containing the particles act as supports after the hydraulic fracture closes.

Classes IPC  ?

• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
• E21B 43/267 - Maintien de fractures par étaiement

Abrégé

Apparatus for microwave heating of hydrocarbon fluid inside a resonant cavity where the hydrocarbon fluid is loaded into a pipe that extends through the resonant cavity between an inlet and outlet with a central point located centrally therebetween. The resonant cavity focuses microwave radiation to a localized area occupied by the pipe such that the power density distribution along the pipe length has a peak located at a point offset from the central point between the central point and the outlet. In another aspect, the resonant cavity can have a variable volume that resonates microwave radiation at different resonant frequencies. The apparatus can be configured to heat hydrocarbon fluid to a reaction temperature suitable for visbreaking of the hydrocarbon fluid. The reaction temperature can be in the range of 350C to 500C, which is suitable for visbreaking of heavy oil.

Classes IPC  ?

• C10G 32/00 - Raffinage des huiles d'hydrocarbures par des moyens électriques ou magnétiques, par irradiation ou par utilisation de micro-organismes
• C10G 15/00 - Craquage des huiles d'hydrocarbures par des moyens électriques, par des vibrations électromagnétiques ou mécaniques, par des radiations particulaires ou avec des gaz surchauffés dans des arcs électriques

Abrégé

A technique facilitates construction of a power cable, such as a downhole electrical power cable for use with electrically powered systems. Construction of the power cable is accomplished with an external layer which does not use metallic, wrapped cable armor. The external layer may be extruded and has an exterior surface exposed to a surrounding environment. The external layer comprises a high temperature resin combined with a size disparate copolymer that creates amorphous regions in the extruded layer to restrict crack propagation.

Classes IPC  ?

• H01B 7/02 - Disposition de l'isolement

Abrégé

A method for downhole fluid analysis by optical spectroscopy with photoacoustic detection includes positioning a photoacoustic system within a wellbore, applying a laser pulse to the fluid sample using the pulsed laser system, detecting, by the acoustic sensor, a time-resolved acoustic pulse generated by absorption of the laser pulse by the fluid sample, and determining a property of the fluid sample using the detected time resolved acoustic pulse. The photoacoustic system includes a pulsed laser system and an acoustic sensor.

Classes IPC  ?

• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
• G01N 1/10 - Dispositifs pour prélever des échantillons à l'état liquide ou fluide
• E21B 47/002 - Relevés dans les trous de forage ou dans les puits par inspection visuelle

Abrégé

A technique facilitates formation of a gravel pack. Gravel slurry is delivered downhole at least in part along a transport conduit from one screen joint to the next. Downstream of a joint connection between two adjacent screen joints, gravel slurry from the transport conduit flows into a gravel slurry chamber. From the gravel slurry chamber, the gravel slurry flows into at least one packing conduit or into at least one packing conduit and at least one transport conduit. The packing conduits are used to discharge the gravel slurry for formation of a gravel pack in a wellbore annulus surrounding the gravel packing system, and the transport conduits are used to deliver the gravel slurry to downstream screen joints for discharge at a more distant location along the wellbore.

Classes IPC  ?

• E21B 43/02 - Filtration souterraine
• E21B 43/04 - Réalisation de filtres à graviers
• E21B 17/02 - AccouplementsJoints

Abrégé

Methods are disclosed for detecting fluid in at least one annulus around at least one casing installed in a borehole traversing a formation utilizing a sonic tool. The sonic tool is activated in the borehole and the received sonic waveforms are processed to obtain a dispersion plot. A reference dispersion plot is generated using a model of the borehole where the casing is well-bonded by cement. The obtained and reference dispersion plots are compared. An indication of fluid and in some cases, the specific radial location thereof is obtained based on the signature of the obtained plot as opposed to the reference plot. The methods are effective in doubly-cased boreholes using monopole and/or dipole sources.

Classes IPC  ?

• G01V 1/40 - SéismologieProspection ou détection sismique ou acoustique spécialement adaptées au carottage
• G01V 1/52 - Détails de structure
• G01N 29/02 - Analyse de fluides

Abrégé

A technique facilitates a well treatment, such as a well stimulation. The technique comprises injecting a gel containing proppant into a wellbore extending into a subterranean formation. Additionally, a low viscosity fluid is injected into the wellbore with the gel either simultaneously or separately. An additive or additives may be used to maintain the gel in the low viscosity fluid. The technique further comprises separating the gel into slugs and then causing the slugs to flow into fractures in the subterranean formation.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/62 - Compositions pour la formation de crevasses ou de fractures
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés

Abrégé

A liner drilling system and method to at least partially drill a wellbore with a liner and cement the liner in place in the wellbore, all in a single downhole trip.

Classes IPC  ?

• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits

Abrégé

A technique facilitates formation of a gravel pack. Gravel slurry is delivered downhole through at least one solid walled tube disposed externally to a base pipe positioned in a wellbore. A structure is used to enable connection of base pipe joints while enabling flow of the gravel slurry past the base pipe joint connection and into a corresponding downstream tube or tubes. The gravel slurry is then discharged at a desired location to help form the gravel pack by depositing the gravel and separating the carrier fluid. The separated carrier fluid is returned back through at least one permeable dehydration tube.

Classes IPC  ?

• E21B 43/02 - Filtration souterraine
• E21B 43/04 - Réalisation de filtres à graviers

Abrégé

Apparatus and methods for characterizing the physical state of a barrier installed in a borehole traversing a formation including locating an ultrasonic tool with a plurality of spaced receivers and a transmitter at a location in the borehole, activating the ultrasonic tool to form ultrasonic waveforms, wherein the spaced receivers record the ultrasonic waveforms, aligning the transmitter and the spaced receivers, wherein the ultrasonic waveforms comprise propagated Lamb modes, processing the ultrasonic waveforms to obtain a first amplitude dispersion plot of attenuation as a function of frequency and first phase dispersion plot of phase velocity as a function of frequency, processing attenuation dispersions to identify discontinuities, and relating the discontinuities to barrier wavespeeds.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G01V 1/40 - SéismologieProspection ou détection sismique ou acoustique spécialement adaptées au carottage
• G01V 1/48 - Traitement des données

Abrégé

An instrument (and corresponding method) performs AFM techniques to characterize properties of a sample of reservoir rock. The AFM instrument is configured to have a probe with a tip realized from reservoir rock that corresponds to the reservoir rock of the sample. The AFM instrument is operated to derive and store data representing adhesion forces between the tip and the sample at one or more scan locations in the presence of a number of different fluids disposed between the tip and the sample. The AFM instrument is further configured to perform computational operations that process the data representing the adhesion forces for a given scan location in order to characterize at least one property of the rock sample at the given scan location. The properties can include total surface energy of the rock sample as well as wettability of the rock sample.

Classes IPC  ?

• G01Q 60/24 - Microscopie à forces atomiques AFM [Atomic Force Microscopy] ou appareils à cet effet, p. ex. sondes AFM

Abrégé

A technique facilitates the study of complex fracture networks. A slot manifold is constructed with a system of branched thin channels, e.g. slots, which are joined at intersections. Fluid is flowed through the system of branched thin channels and through an intersection or intersections joining the channels in a manner which enables evaluation of fluid flow. A flow distribution device is used to allow or block flow of the fluid along specific branches of the system of branched thin channels to facilitate evaluation of fluid flow as a fluid moves through various angular changes and/or flow gap width changes from one channel to another.

Classes IPC  ?

• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• G06F 17/50 - Conception assistée par ordinateur

Abrégé

Specialized computing systems, devices, interfaces and methods facilitate the simulation of downhole wellbore re-entry procedures such as sidetracking, rat hole extension, hole enlargement, window modification, fishing, and other re-entry procedures. Computing systems, devices, interfaces and methods enable a user to design and select BHA components and procedures to be compared and simulated. Various re-entry parameters, such as re-entry tool parameters, whipstock parameters, wellbore casing parameters, window parameters, rat hole parameters, and the like may be accessed and selectably modified with re-entry and simulation interfaces to define and control the simulated re-entry procedures. Different types of output are selectably rendered to reflect various aspects of the simulated re-entry procedures.

Classes IPC  ?

• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• G06G 7/48 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p. ex. simulateurs
• G06G 3/10 - Dispositifs dans lesquels l'opération de calcul est effectuée mécaniquement pour simuler des procédés, des systèmes ou des dispositifs spécifiques

Abrégé

Specialized computing systems, devices, interfaces and methods facilitate the simulation of downhole wellbore abandonment procedures such as section milling and casing milling. Computing systems, devices, interfaces and methods enable a user to design and select BHA components and procedures to be compared and simulated. Various parameters, such as wellbore casing parameters, milling tool parameters, simulation parameters, and the like may be accessed and selectably modified by user input with interactive elements presented at user interfaces to define and control simulations of abandonment procedures. Different types of output are selectably rendered to reflect various aspects of the simulated abandonment procedures.

Classes IPC  ?

• G06G 7/48 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p. ex. simulateurs
• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• G06G 3/10 - Dispositifs dans lesquels l'opération de calcul est effectuée mécaniquement pour simuler des procédés, des systèmes ou des dispositifs spécifiques
• G05B 19/02 - Systèmes de commande à programme électriques

Abrégé

Estimating petrophysical properties of a hydrocarbon reservoir traversed by at least one wellbore comprises obtaining at least one core sample from the wellbore and obtaining a three-dimensional (3D) porous solid image of the core sample. A 3D pore scale model is generated from the 3D porous solid image. A distribution of reservoir fluids in pores of the reservoir is simulated by a microhydrodynamic simulation using the 3D pore scale models of the core samples and at least one petrophysical property of the reservoir by a microscale modeling using the simulated distribution of the reservoir fluids is simulated by fitting the at least one simulated petrophysical property to well logging data at a depth corresponding to a depth of taking the core sample using free parameters. Governing parameters of the 3D pore scale models are extrapolated along a logged part of the wellbore and the at least one other petrophysical property is estimated by simulation.

Classes IPC  ?

• G01V 5/08 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X
• G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
• G06G 7/75 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p. ex. simulateurs pour l'analyse de composants, p. ex. de mélanges, de couleurs
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

A method for scheduling wellbore construction activities includes entering a well plan into a computer. The well plan includes estimated start and stop times for a plurality of activities in a predetermined sequence. Progress of selected ones of the plurality of activities is measured during their performance. In the computer, expected ending time of at least one of the plurality of activities is recalculated based on progress thereof during that activity. In the computer, expected start and stop times are recalculated for each activity subsequent to the activity in progress based on the recalculated expected ending time. The recalculated start and stop times for each subsequent activity are displayed.

Classes IPC  ?

• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• G05B 19/02 - Systèmes de commande à programme électriques
• G06F 19/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des applications spécifiques (spécialement adaptés à des fonctions spécifiques G06F 17/00;systèmes ou méthodes de traitement de données spécialement adaptés à des fins administratives, commerciales, financières, de gestion, de surveillance ou de prévision G06Q;informatique médicale G16H)

Abrégé

Composition-matched downhole tools and methods for using such tools are provided. One such method includes emitting neutrons using a neutron source in the downhole tool to generate formation gamma rays in a surrounding formation. At the same time, however, some of the neutrons may interact with different parts of the downhole tool to form tool gamma rays. The gamma ray spectra of at least some of the formation gamma rays and the tool gamma rays may be detected using a gamma ray detector. The tool gamma rays from the different parts of the tool may have a substantially similar spectral shape. As such, a processor may be used to analyze the spectra of the tool gamma rays using a single tool background standard, thereby simplifying the analysis and improving the precision of the results.

Classes IPC  ?

• G01V 5/10 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de neutrons

Abrégé

Specialized computing systems, devices, interfaces and methods facilitate the simulation of downhole milling procedures such as wellbore departure milling procedures. Computing systems, devices, interfaces and methods enable a user to design and select milling components and procedures to be compared and simulated. Various milling parameters, such as milling tool parameters, whipstock parameters, and wellbore casing parameters may be accessed and selectably modified with milling and simulation interfaces to define and control the simulated milling procedures. Different types of output are selectably rendered to reflect various aspects of the simulated milling procedures.

Classes IPC  ?

• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• G06G 7/48 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p. ex. simulateurs
• G06G 3/10 - Dispositifs dans lesquels l'opération de calcul est effectuée mécaniquement pour simuler des procédés, des systèmes ou des dispositifs spécifiques

Abrégé

Method for processing acoustic waveforms comprises acquiring acoustic waveforms in a borehole traversing a subterranean formation and transforming at least a portion of the acoustic waveforms to produce frequency domain signals. Then model dispersion curves, modes spectrum or waveforms are generated based on an anisotropic borehole-formation model having a set of anisotropic and geometrical borehole-formation parameters and by specifying governing equations and computational mesh based functional basis. The frequency-domain signals are back-propagating using the model dispersion curves to correct dispersiveness of the signals and coherence of the back-propagated signals is calculated. Alternatively the difference between the measured and the model dispersion curves is determined. Model parameters are iteratively adjusted until the coherence reaches a maximum or exceeds a selected value, or alternatively until the difference between the measured and the model dispersion curves becomes minimal or is reduced to below a selected value. Then at least a portion of the set of anisotropic and geometrical borehole-formation parameters is obtained.

Classes IPC  ?

• G01V 1/48 - Traitement des données
• G06F 17/10 - Opérations mathématiques complexes

Abrégé

The disclosure provides a borehole tool for seismic data collection. The tool comprises a cable to be positioned within a borehole and at least one sensor for measuring seismic signals mounted on the cable. The sensors provide measurements of particle motion (velocity or acceleration) perpendicular to an axis of the borehole. The disclosure also provides methods of seismic surveying, which involves positioning the tool in the borehole, firing a seismic source generating a seismic wave and measuring particle motion associated with the passing seismic wave perpendicular to an axis of the borehole using the at least one sensor for measuring particle motion.

Classes IPC  ?

• G01V 1/40 - SéismologieProspection ou détection sismique ou acoustique spécialement adaptées au carottage

Abrégé

An underreamer for increasing the diameter of a bore. The underreamer includes a substantially cylindrical body. A mandrel may extend axially through the body. One or more cutter blocks are movably coupled to the body. A ratio of a height of the cutter block to a diameter of the body is between about 0.35:1 and about 0.50:1.

Classes IPC  ?

• E21B 10/26 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs
• E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
• E21B 7/28 - Élargissement des trous forés, p. ex. par forage à contresens

Abrégé

Methods and downhole tools involving neutron-absorbing gamma ray windows are provided. One such method involves emitting neutrons from a neutron source in a downhole tool in a well into a surrounding geological formation. This may produce formation gamma rays through interactions between the neutrons and elements of the geological formation. The formation gamma rays may be detected by a gamma ray detector when the gamma rays pass via a gamma ray window that includes a neutron-absorbing material disposed in a substrate material of the downhole tool. The gamma ray window may be both more transmissive of gamma rays than the substrate material and less transmissive of neutrons than a window without the neutron-absorbing material. This may decrease a neutron flux that would otherwise reach the gamma ray detector and the tool materials surrounding it and thus would otherwise lead to a background signal contaminating a signal corresponding to the detected formation gamma rays.

Classes IPC  ?

• G01V 5/10 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de neutrons

Abrégé

A system for determination of a field rock type comprises a computer processor and a rock typing tool executing on the computer processor. The rock typing tool comprises a rock property database configured to store rock property data, a first module configured to receive new input field rock property data and a data processing module configured to characterize the new input field rock property data and to determine field rock type as a best matched rock type.

Classes IPC  ?

• G01N 33/24 - Matériaux de la terre
• G06F 17/30 - Recherche documentaire; Structures de bases de données à cet effet

Abrégé

Apparatus and methods of analyzing a composition of a hydrocarbon-containing fluid including using a nuclear magnetic resonance (NMR) tool to conduct a NMR relaxation measurement, a diffusion measurement, or both on the hydrocarbon-containing fluid to obtain NMR data, using a non-NMR tool to conduct an additional measurement of a reference fluid to obtain non-NMR data wherein the additional measurement comprises gas chromatography, optical observation, or both, and using the NMR data and the non-NMR data in an inversion process to determine an indication of the composition of the hydrocarbon-containing fluid. In some embodiments, the indication is determined over 4 chain length nodes.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G01V 3/18 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage
• G01V 3/38 - Traitement de données, p. ex. pour l'analyse, pour l'interprétation ou pour la correction

Abrégé

A method for real-time burner monitoring and control of a flare system (130), including analyzing a flare gas and/or flare exhaust gas by one or more analytical techniques and determining the flare gas (12) and/or flare exhaust gas composition. The method may also include an ash particle monitoring system. The method further includes an analytical control unit (150) for real-time adjustment of process conditions.

Classes IPC  ?

• F23N 5/08 - Systèmes de commande de la combustion utilisant des dispositifs sensibles aux variations thermiques ou à la dilatation thermique d'un agent utilisant des éléments sensibles à la lumière
• F23G 5/50 - Commande ou dispositifs de sécurité
• F23G 7/08 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets particuliers ou de combustibles pauvres, p. ex. des produits chimiques de gaz d'évacuation ou de gaz nocifs, p. ex. de gaz d'échappement utilisant des torchères, p. ex. dans des cheminées

Abrégé

Methods and apparatuses are provided for analyzing a composition of a hydrocarbon-containing fluid. The methods include using a nuclear magnetic resonance (NMR) tool to conduct NMR measurements on the hydrocarbon-containing fluid to obtain NMR data. A non-NMR tool, such as an optical tool, is used to conduct additional measurements and to obtain non-NMR data on the fluid. The methods further include determining an indication of the composition of the fluid by using the NMR data and normalizing the indication of the composition of the fluid using the non-NMR data.

Classes IPC  ?

• G01V 3/32 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant par résonance magnétique électronique ou nucléaire
• G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
• G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes

Abrégé

Methods for reducing a viscosity of a viscosified fluid include reacting, such as by depolymerizing and/or decomposing, a polymeric material of the viscosified fluid with a breaking agent including a fully coordinated transition metal compound, such as a strongly complexed fully-coordinated transition metal compound. The methods of treating the subterranean are provided that include reacting, such as by depolymerizing and/or decomposing, a polymeric material of a viscosified treatment fluid with a fully coordinated transition metal compound, such as a strongly complexed fully-coordinated transition metal compound, to facilitate breaking of the viscosified treatment fluid after the fracturing or treatment is finished.

Classes IPC  ?

• C09K 8/62 - Compositions pour la formation de crevasses ou de fractures
• C09K 8/03 - Additifs spécifiques à usage général dans les compositions pour le forage des puits

Abrégé

A downhole acoustic logging tool includes at least one acoustic transmitter and first and second arrays of acoustic receivers deployed on a tool body. The first array of acoustic receivers includes a plurality of axially spaced apart acoustic receivers and the second array of acoustic receivers includes a plurality of circumferentially spaced apart acoustic receivers. A method for making downhole acoustic logging measurements of a subterranean formation includes causing an acoustic logging tool to obtain axial acoustic logging measurements and circumferential acoustic logging measurements. The axial acoustic logging measurements and the circumferential acoustic logging measurements are then processed to compute each of five elastic constants of a transversely isotropic medium.

Classes IPC  ?

• G01V 1/52 - Détails de structure
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

Well cementing compositions comprise water, an inorganic cement and flexible particles having an average density higher than 1.5 g/cm3. The flexible particles may be elastomers. The flexible particles and cement particles may be present in a trimodal particle size distribution. The compositions may be placed in subterranean wells in the context of primary or remedial cementing.

Classes IPC  ?

• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues

Abrégé

Systems and methods for evaluating a cement installation are provided. In one example, the cement may be evaluated using a casing arrival measurement sensor that measures casing arrival signals resulting from firing a signal from a cement bond logging acoustic source. External signals (e.g., signals other than the casing arrival signals) may be attenuated by firing an attenuation firing signal.

Classes IPC  ?

• G01V 1/46 - Acquisition des données
• G01V 1/52 - Détails de structure

Abrégé

A downhole tool assembly for completing or cleaning a wellbore may include a perforation gun sub, and a laser assembly sub.

Classes IPC  ?

• E21B 43/11 - PerforateursPerméators
• E21B 43/116 - Perforateurs à balles ou à charge profilée

Abrégé

A method for measuring asphaltene content of a crude oil is provided. In one embodiment, the method includes measuring an optical density of a live crude oil within a well and calculating a formation volume factor of the live crude oil based on the measured optical density. The method also includes determining asphaltene content of the live crude oil based on the measured optical density and the calculated formation volume factor of the live crude oil. Additional methods, systems, and devices are also disclosed.

Classes IPC  ?

• G01N 15/06 - Recherche de la concentration des suspensions de particules
• G01N 21/59 - Transmissivité
• G01N 33/24 - Matériaux de la terre

Abrégé

A method for monitoring operation of a pumping system for pumping anomalies is provided. In one embodiment, the method includes operating a pump of a downhole tool to pump fluid through the downhole tool and continually measuring an operational parameter of the downhole tool over a period of time during pumping of the fluid through the downhole tool. The measurements of the operational parameter can be filtered, and the filtered measurements can be monitored to enable detection of pumping anomalies in the downhole tool. Additional systems, devices, and methods are also disclosed.

Classes IPC  ?

• E21B 21/08 - Commande ou surveillance de la pression ou de l'écoulement du fluide de forage, p. ex. remplissage automatique des trous de forage, commande automatique de la pression au fond
• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• F04D 13/10 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée adaptés pour l'utilisation dans les forages de mine

Abrégé

A method of treating a subterranean formation penetrated by a wellbore, the method including the introduction a treatment fluid comprising an aqueous fluid composition comprising an aldehyde releasing compound.

Classes IPC  ?

• E21B 43/22 - Emploi de produits chimiques ou à activité bactérienne
• C09K 8/58 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement

Abrégé

The present disclosure relates to a method and apparatus for sampling a fluid from an environment having a primary filtering on a focused sampling probe and guard filtering system that is exposed upon movement of the focused sampling probe.

Classes IPC  ?

• E21B 49/02 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits par prélèvements mécaniques d'échantillons du terrain
• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits

Abrégé

A tool having at least one vibration sensor and at least one standoff is disposed in a contact with a material and the at least one standoff of the tool is pushed into the material. Vibration is excited by the at least one vibration source and at least one coupling frequency of the tool is measured by the at least one vibration sensor. Based on the determined coupling frequency determining a contact stiffness of the at least one standoff and the mechanical properties of the material are determined taking into account mechanical properties of the at least one standoff.

Classes IPC  ?

• G01N 3/40 - Recherche de la dureté ou de la dureté au rebondissement

Abrégé

Methods and apparatuses are provided for analyzing a composition of a hydrocarboncontaining fluid. The methods include using a nuclear magnetic resonance (NMR) tool to conduct an NMR measurement on the hydrocarbon-containing fluid to obtain NMR data. A non-NMR tool, such as an optical tool, is used to conduct additional measurements on the hydrocarbon-containing fluid and to obtain non-NMR data on the fluid. An indication of the composition of the fluid can be determined by using the NMR data and the non-NMR data in an inversion process.

Classes IPC  ?

• G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes
• G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire

Abrégé

An electrochemical fluid sensor for a downhole production tool positionable in a wellbore penetrating a subterranean is provided. The wellbore has a downhole fluid therein. The electrochemical fluid sensor includes a sensor housing positionable in the downhole tool, a sensing solution positionable in the housing (the sensing solution including a mediator reactive to target chemicals), a gas permeable membrane to fluidly isolate the downhole fluid from the sensing solution (the gas permeable membrane permitting the passage of gas to the sensing solution), and a plurality of electrodes positioned about the housing a distance from the gas permeable membrane to measure reaction by the sensing solution whereby downhole parameters may be determined.

Classes IPC  ?

• E21B 47/09 - Localisation ou détermination de la position d'objets dans les trous de forage ou dans les puitsIdentification des parties libres ou bloquées des tubes
• G01N 27/26 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables électrochimiquesRecherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en utilisant l'électrolyse ou l'électrophorèse

Abrégé

A method is described for obtaining an accurate and precise value for radiation output of a radiation generator. Radiation is generated in the radiation generator, and the radiation output of the radiation generator is measured using a radiation monitoring device. An instantaneous inferred radiation output is determined from operating parameters of the radiation generator, and over a period of time a calibration factor between the measured and the instantaneous inferred radiation output is determined. The accurate and precise value for radiation output is determined from the instantaneous inferred radiation output and the determined calibration factor.

Classes IPC  ?

• G01V 5/10 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de neutrons

Abrégé

A drilling system includes a downhole sampling tool configured to be placed in a wellbore of a subterranean formation and configured to pump formation fluid from the subterranean formation into the downhole sampling tool. The downhole sampling tool includes internal components configured to route the formation fluid through the downhole sampling tool and drill collars configured to hold the internal components of the downhole sampling tool. The downhole sampling tool also includes at least one coupon made from a material that is optically reactive to hydrogen sulfide (H2S). The coupon is disposed in a location that is exposed to the formation fluid that is pumped into the downhole sampling tool, and the location of the coupon is accessible from outside the downhole sampling tool without removing the internal components from the drill collars.

Classes IPC  ?

• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G01N 1/10 - Dispositifs pour prélever des échantillons à l'état liquide ou fluide

Abrégé

A tool is to be used within a wellbore including a wall and extending into a formation with formation fluid. The tool includes a packer expandable against the wellbore wall with ports included within the packer to enable formation fluid to flow into the tool from the formation. The ports are arranged in a first port configuration optimized based upon a first predetermined formation property.

Classes IPC  ?

• E21B 33/12 - PackersBouchons
• E21B 33/127 - PackersBouchons à manchon gonflable
• E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits

Abrégé

The present disclosure describes a neutron generator including an ion source that generates ions; a target that outputs neutrons when the ions impact the target; one or more power supplies that supply electrical power to the ion source and the target; and a control system. The control system determines one or more rules that describe relationships between operational parameters, useful life, reliability, neutron output, environment, and constraints of the neutron generators; determines one or more operational parameter setpoints based at least in part on the one or more rules; and instructs the one or more power supplies to adjust electrical power supplied to the ion source, the target, or both based at least in part on the one or more operational parameter setpoints.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G01V 5/04 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage
• G01V 5/10 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de neutrons

Abrégé

A method and system for delivering materials downhole employing a shear thickening treatment fluid. The viscosity of the shear thickening treatment fluid increases with increasing shear rate. The shear thickening fluid may inhibit particulate dispersion, settling or a combination thereof at high shear rates and facilitate dispersion and/or settling of the particulates and/or formation of pillars or clusters in the fracture at low shear rates.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement
• C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
• C09K 8/70 - Compositions pour la formation de crevasses ou de fractures caractérisées par leur forme ou par la forme de leurs composants, p. ex. mousses

Abrégé

A downhole tool includes a tool body and at least one blade coupled to the tool body. Cutting elements are coupled to a forward surface of the blade, and each cutting element may include a flank face and a trailing face to collectively define the width of the cutting element. A cutting edge is formed at the intersection of the flank face and a front face of the cutting element. The trailing and flank faces of adjacent cutting elements may be inclined relative to each other to define a flank angle that may be between greater than 0 and 15. Adjacent cutting elements may have a gap therebetween, even when there is contact between the adjacent cutting elements.

Classes IPC  ?

• E21B 10/42 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson
• E21B 10/43 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson caractérisés par la disposition des dents ou des autres éléments coupants
• E21B 10/62 - Trépans caractérisés par des parties, p. ex. des éléments coupants, amovibles ou réglables

Abrégé

Methods are provided for determining the drilling state of a downhole tool and controlling the trajectory of the downhole tool in a wellbore during a drilling operation. One method may include identifying a drilling parameter indicative of the drilling state of the downhole tool in the wellbore. The method may also include determining the drilling state based on the identified drilling parameter. The identified drilling parameter may be obtained from a sensor communicatively coupled with a processor and disposed in the wellbore. The method may further include adjusting the operation of an integral controller based on the determined drilling state to control the trajectory of the downhole tool in the wellbore during the drilling operation.

Classes IPC  ?

• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• G05B 19/02 - Systèmes de commande à programme électriques
• E21B 47/02 - Détermination de l'inclinaison ou de la direction

Abrégé

A composition and method for performing a treatment of a subterranean formation. The composition includes an emulsified acid and a sulfobetaine surfactant. The emulsified acid and the sulfobetaine surfactant may be mixed to form a treatment composition, which may be injected into a subterranean formation as part of an acid fracturing or hydraulic fracturing treatment.

Classes IPC  ?

• C09K 8/02 - Compositions pour le forage des puits
• C09K 8/72 - Produits chimiques érosifs, p. ex. acides
• E21B 43/22 - Emploi de produits chimiques ou à activité bactérienne