Abrégé

The subject invention relates to a kerosene base fuel having an initial boiling point in the range 130 to 160°C and a final boiling point in the range 250 to 300°C as determined according to ASTM method D86, and comprising less than 15% by weight of aromatic compounds, and at least of 80% by weight of aliphatic hydrocarbons, of which at least 20% by volume are n-paraffins and at least 25% by volume are cycloparaffins, as determined by according to ASTM method D2425. It further relates to the use of this base fuel in fuel compositions, as well as for he use of the kerosene base fuel in a fuel composition comprising a petroleum based kerosene base fuel having a higher density and a lower energy content than that of the kerosene base fuel, to increase the energy density above that of the petroleum derived kerosene fuel.

Classes IPC  ?

• C10L 1/04 - Combustibles carbonés liquides à base essentielle de mélanges d'hydrocarbures
• C10L 10/00 - Utilisation d'additifs à des fins particulières dans les combustibles ou les feux

Abrégé

A drill bit assembly comprising a bit body connectable to a tubular drill string, and provided with a longitudinal passageway for an operating tool from an internal position in an attached drill string to an external position; an externally removable closure element for closing the passageway for the operating tool; and a passage tool attached to or connectable to the closure element in its closing position from inside the bit body, wherein the passage tool comprises a lower part to which the closure element is attached or connectable, which lower part is arranged so that it can be moved out of the bit body together with the closure element, and an upper tubular part which is arranged so that it can be moved along the passageway in the bit body, the upper tubular part forming a passage with a downstream opening for the operating tool, when the lower part of the passage tool has been moved out of the bit body; as well as the use of the drill bit assembly in a method of performing an operation in the wellbore.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 10/20 - Trépans à organes coupants roulants, p. ex. à molettes caractérisés par des parties amovibles ou réglables, p. ex. des bras ou des arbres

Abrégé

A method for operating an earth formation drilling device (1) arranged to supply a jet of abrasive fluid for the purpose of providing a borehole by removing earth formation material through abrasion, comprises a drill string and a drilling assembly connected to the drill string. Said drilling assembly comprises a jetting device with a mixing space (13), a drilling fluid, a particle inlet (12), an abrasive fluid outlet (40) for discharging a mixture of drilling fluid and magnetic particles, and a magnetic particle circulation system comprising a supporting surface which is exposed to a return stream along the drilling assembly. Furthermore, a magnetic device (9) is provided for attracting the magnetic particles onto the supporting. Said method is characterized buy the steps of : -fixing the magnetic device with respect to the supporting surface, -selecting a magnetic field density which increases along the sloping supporting surface towards, the entrance, -attracting magnetic particles onto the supporting surface under the influence of the fixed magnetic device, -making the magnetic particles move over the sloping supporting surface (under the influence of the magnetic field of the magnetic device.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille
• E21B 21/00 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p. ex. en utilisant l'air d'échappement du moteur

Abrégé

A method for reducing the mercury content of natural gas condensate, comprising the steps of providing a nanof iltration membrane having a feed side and a permeate side; contacting the natural gas condensate with the feed side of the membrane; and obtaining a mercury-depleted natural gas condensate at the permeate side of the membrane; and a natural gas processing plant comprising a condensate workup section including a nanof iltration membrane separation unit for reducing the mercury content of natural gas condensate.

Classes IPC  ?

• C10G 31/11 - Raffinage des huiles d'hydrocarbures, en l'absence d'hydrogène, par des méthodes non prévues ailleurs par dialyse
• B01D 61/02 - Osmose inverseHyperfiltration
• B01D 61/24 - Dialyse

Abrégé

A method is disclosed of connecting a first borehole (1) to a second borehole (2), said boreholes being formed in an earth formation (3) and extending at a mutual distance. The method comprises inserting a volume of hardenable fluidic material (24) into a space (22) in the earth formation extending between the first and second boreholes, and allowing the hardenable fluidic material to harden so as to form a body of hardened material between the first and second boreholes. At least one fluid channel (26) is created in said body of hardened material, each fluid channel providing fluid communication between the first borehole and the second borehole.

Classes IPC  ?

• E21B 43/17 - Mise en communication de plusieurs puits par fracturation ou autre attaque de la formation
• E21B 43/30 - Disposition particulière des puits, p. ex. disposition rendant optimum l'espacement des puits

Abrégé

A wellbore system is provided comprising a borehole formed in an earth formation (10), the borehole having a borehole section containing a volume of gravel pack particles (26) and at least one body of a swellable material (22). Each body of swellable material (22) is adapted to expand from an unexpanded state to an expanded state upon contact of the swellable material with a selected fluid, wherein a flow passage (30) is present in said borehole section allowing fluid' to bypass the volume of gravel pack particles when the body of swellable material is in the. unexpanded state. The body of swellable material is arranged to substantially close the flow passage upon expansion of the body of swellable material to the expanded state.

Classes IPC  ?

• E21B 43/04 - Réalisation de filtres à graviers
• E21B 33/127 - PackersBouchons à manchon gonflable

Abrégé

A distance holder (1) for connection to, and rotation with, a drill string (2) in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole (2) by removing earth formation material through abrasion, comprises a chamber (16) which is essentially rotational symmetric and which is to face the earth formation material, and a jet nozzle (S) arranged for discharging a jet of the abrasive fluid in said chamber. The chamber comprises a deflector (12) positioned in the path of the fluid jet discharged from the jet nozzle.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille

Abrégé

A distance holder (1) for connection to, and rotation with, a drill string in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole (4) by removing earth formation material through abrasion, comprises a housing with a chamber (13) which is essentially rotational symmetric and which is to face the earth formation material, and a jet nozzle (10) which arranged for discharging a jet of the abrasive fluid in said chamber, said housing comprising at least one slot (18) for allowing the abrasive fluid to leave the chamber. The slot is continued over the housing outer surface so as to counteract rolling motions of the particles which are comprised in the abrasive fluid.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille
• E21B 21/00 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p. ex. en utilisant l'air d'échappement du moteur

Abrégé

A process for enabling constant power output in a power plant integrated with a C02 capture unit, wherein the power plant comprises at least one gas turbine coupled to a heat recovery steam generator unit and the C02 capture unit comprises an absorber and a regenerator, the process comprising the steps of : (a) intorducing hot exhaust gas exiting a gas turbine into a heat recovery steam generator unit to produce steam, which is used to generate power, and a flue gas conprising carbon dioxide; (b) removing carbon dioxide from the flue gas comprising carbon dioxide in an absorber; (c) regenerating the absorbing liquid enriched in carbon dioxide with a stripping gas; (d) combusting an amount of fuel in the heat recovery steam generator unit sufficient to provide at least 80% of the heat needed for step (c).

Classes IPC  ?

• B01D 53/62 - Oxydes de carbone

Abrégé

A process for producing a pressurised CO2 stream in a power plant integrated with a CO2 capture unit, wherein the power plant comprises at least one gas turbine (1) coupled to a heat recovery steam generator unit (2) and the CO2 capture unit comprises an absorber (18) and a regenerator (21), the process comprising the steps of: (a) introducing hot exhaust gas exiting a gas turbine into a heat recovery steam generator unit to produce a first amount of steam and a flue gas stream (17) comprising CO2; (b) removing CO2 from the flue gas stream comprising CO2 by contacting the flue gas stream with absorbing liquid in an absorber (18) to obtain absorbing liquid enriched in CO2 (20) and a purified flue gas stream; (c) contacting the absorbing liquid enriched in CO2 with a stripping gas at elevated temperature in a regenerator (21) to obtain regenerated absorbing liquid and a gas stream enriched in CO2 (23); (d) pressurising the gas stream enriched in CO2 using a CO2 compressor (24) to obtain the pressurised CO2 stream, wherein a first part of the steam produced in the heat recovery steam generator unit is used to drive the CO2 compressor (13).

Classes IPC  ?

• B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption

Abrégé

A process for reducing CO2 emission in a power plant, wherein the power plant comprises at least one gas turbine coupled to a heat recovery steam generator unit and the CO2 capture unit comprises an absorber and a regenerator, the process comprising the steps of: (a) introducing hot exhaust gas exiting a gas turbine having a certain elevated pressure into a heat recovery steam generator unit to produce steam and a flue gas stream comprising carbon dioxide; (b) removing carbon dioxide from the flue gas stream comprising carbon dioxide by contacting the flue gas stream with absorbing liquid in an absorber having an elevated operating pressure to obtain absorbing liquid enriched in carbon dioxide and a purified flue gas stream, wherein the settings and/or construction of the gas turbine are adjusted such that the hot exhaust gas exiting the gas turbine has a pressure of at least 40% of the elevated operating pressure of the absorber.

Classes IPC  ?

• B01D 53/62 - Oxydes de carbone

Abrégé

A method of investigating an underground formation underneath the earth's surface, comprising obtaining a first data set representing change in a predetermined seismic parameter over a period of time for a plurality of points in the underground formation, which first data set is derived from a time-lapse seismic survey of the earth formation spanning the period of time; obtaining a second data set representing geodetic deformation over substantially the same period of time at a plurality of locations on the earth's surface, which second data set is derived from a geodetic survey spanning the period of time; jointly processing the first and second data sets to obtain a map of a parameter related to volume change in the underground formation; wherein a geomechanical model of the underground formation is postulated; also a method of producing hydrocarbons and a computer program.

Classes IPC  ?

• G01V 1/28 - Traitement des données sismiques, p. ex. pour l’interprétation ou pour la détection d’événements

Abrégé

In a method and apparatus for passing a mixed vapour and liquid stream between a first heat exchanger (101) and a second heat exchanger (102) the mixed vapour and liquid stream outflows from the first heat exchanger (101) through two or more outlets (104). Then, the mixed vapour and liquid stream in the outlets (104) passes through two or more intermediate conduits (103) to the second heat exchanger (102), after which the mixed vapour and liquid stream inflows from the intermediate conduits (103) into the second heat exchanger (102) through two or more inlets (105). The number (X) of outlets (104) is equal to or greater than the number (Y) of inlets (105).

Classes IPC  ?

• B01F 3/20 - Prétraitement des substances à mélanger
• B01F 3/04 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de gaz ou de vapeurs avec des liquides
• B01D 19/00 - Dégazage de liquides

Abrégé

The present invention relates to use of a composite material as a fluid barrier under cryogenic conditions, the composite material having: (a) a tensile Young's modulus of less than 50 GPa; and (b) a tensile strain at break of at least 5% at ambient conditions. The present invention further relates to a sandwich and a containment system for a cryogenic fluid comprising the composite material.

Classes IPC  ?

• F17C 1/16 - Récipients sous pression, p. ex. bouteilles de gaz, réservoirs de gaz, cartouches échangeables en matériaux plastiques

Abrégé

In a method and apparatus for passing a mixed vapour and liquid stream between a first heat exchanger (101) and a second heat exchanger (102) the mixed vapour and liquid stream outflows from the first heat exchanger (101) through two or more outlets (104). Then, the mixed vapour and liquid stream in the outlets (104) passes through two or more intermediate conduits (103) to the second heat exchanger (102), after which the mixed vapour and liquid stream inflows from the intermediate conduits (103) into the second heat exchanger (102) through two or more inlets (105). The number (X) of outlets (104) is equal to or greater than the number (Y) of inlets (105).

Classes IPC  ?

• B01D 19/00 - Dégazage de liquides

Abrégé

The present invention relates to use of a composite material as a fluid barrier under cryogenic conditions, the composite material having: (a) a tensile Young's modulus of less than 50 GPa; and (b) a tensile strain at break of at least 5% at ambient conditions. The present invention further relates to a sandwich and a containment system for a cryogenic fluid comprising the composite material.

Classes IPC  ?

• F17C 1/16 - Récipients sous pression, p. ex. bouteilles de gaz, réservoirs de gaz, cartouches échangeables en matériaux plastiques

Abrégé

In method of providing uniformity of vapour and liquid phases in two or more streams derived from a mixed vapour and liquid stream (10), the mixed vapour and liquid stream (10) passes from a first heat exchanger (101) into a distribution vessel (12) via one or more inlets (14). The distribution vessel (12) has two or more outlets (16) connected to a second heat exchanger (102). The liquid part of the mixed stream (10) is allowed to collect in a first area (20) in the distribution vessel (12), and the vapour part of the mixed stream (10) is allowed to collect in a second area (30) of the distribution vessel (12), preferably above the first area (20). The liquid in the first area (20) passes into the outlets (16) via one or more liquid apertures (18) in each outlet (16) that communicate with the first area (20), and the vapour in the second area (30) passes into the outlets (16) via one or more vapour apertures (28) in each outlet (16) communicating with the second area (30).

Classes IPC  ?

• B01D 19/00 - Dégazage de liquides

Abrégé

A method is provided of radially expanding a tubular element. The method comprises inducing the wall of the tubular element to bend radially outward and in axially reverse direction so as to form an expanded section of the tubular element extending around an unexpanded section of the tubular element, wherein said bending occurs in a bending zone of the wall, and wherein an annular space is defined between the unexpanded and expanded sections. At least one guide member is located in the annular space, each guide member being arranged to guide the wall during said bending so that the wall bends at an increased bending radius relative to bending of the wall in case the guide member is absent from the annular space.

Classes IPC  ?

• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
• F16L 55/165 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau par introduction d'un tuyau dans la section endommagée

Abrégé

In method of providing uniformity of vapour and liquid phases in two or more streams derived from a mixed vapour and liquid stream (10), the mixed vapour and liquid stream (10) passes from a first heat exchanger (101) into a distribution vessel (12) via one or more inlets (14). The distribution vessel (12) has two or more outlets (16) connected to a second heat exchanger (102). The liquid part of the mixed stream (10) is allowed to collect in a first area (20) in the distribution vessel (12), and the vapour part of the mixed stream (10) is allowed to collect in a second area (30) of the distribution vessel (12), preferably above the first area (20). The liquid in the first area (20) passes into the outlets (16) via one or more liquid apertures (18) in each outlet (16) that communicate with the first area (20), and the vapour in the second area (30) passes into the outlets (16) via one or more vapour apertures (28) in each outlet (16) communicating with the second area (30).

Classes IPC  ?

• B01D 19/00 - Dégazage de liquides
• B01F 3/04 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de gaz ou de vapeurs avec des liquides

Abrégé

In a method of treating a hydrocarbon stream, such as a natural gas stream, a partly condensed feed stream (10) is supplied to a first gas/liquid separator (2), where it is separated into a gaseous stream (20) and a liquid stream (30). The liquid stream (30) is expanded and fed (40) into a second gas/liquid separator (3), and the gaseous stream (20) is split into at least two sub- streams (50, 70). A first sub-stream (50) of the at least two sub-streams is expanded, thereby obtaining an at least partially condensed first sub-stream (60), and subsequently fed (60) into the second gas/liquid separator (3). A second sub-stream (70) of the at least two sub-streams is cooled against a cold stream (120), thereby obtaining an at least partially condensed second sub-stream (90, 90a), which is fed (90, 90a) into the second gas/liquid separator (3) from which a gaseous stream (130) and a liquid stream (100, 100a) are removed. The at least partially condensed second sub-stream (90, 90a) may have a temperature of below -95 °C.

Classes IPC  ?

• F25J 3/02 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification par rectification, c.-à-d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide

Abrégé

A method of controlling the turndown of a compressor (12) for a gaseous hydrocarbon stream (10) such as natural gas, comprising at least the steps of : (a) passing the gaseous hydrocarbon stream (10) through the compressor (12) to provide a compressed hydrocarbon stream (20); (b) passing at least a fraction (30) of the compressed hydrocarbon stream (20) through an expander (14) which is mechanically interconnected with the compressor (12), to provide an expanded hydrocarbon stream (40); and (c) re-circulating part or all of the expanded hydrocarbon stream (40) through the compressor (12).

Classes IPC  ?

• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p. ex. de l'hélium, de l'hydrogène
• F17C 9/02 - Procédés ou appareils pour vider les gaz liquéfiés ou solidifiés contenus dans des récipients non sous pression avec changement d'état, p. ex. vaporisation
• F04D 27/02 - Contrôle de l'emballement

Abrégé

A method of cooling at least two hydrocarbon streams such as natural gas, the method at least comprising the steps of : (a) providing at least first and second hydrocarbon streams (20, 20a); (b) passing the first hydrocarbon strea (20) through one or more first heat exchangers (12, 14) to provide a first cooled hydrocarbon stream (30); and (c) passing the second hydrocarbon stream (20a) through one or more second heat exchangers (12a, 14a) to provide a second cooled hydrocarbon stream (30a); wherein a refrigerant circuit (100) provides cooling to the first heat exchanger (s) (12, 14) and the second heat exchanger (s) (12a, 14a).

Classes IPC  ?

• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p. ex. de l'hélium, de l'hydrogène
• F25B 9/02 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant l'effet Joule-ThompsonMachines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant l'effet vortex

Abrégé

The invention relates to a method of radially expanding a tubular element. The method comprises inducing the wall of the tubular element to bend radially outward and in axially reverse direction so as to form an expanded tubular section extending around an unexpanded section of the tubular element, said wall having a resistance to radially outward bending and a resistance to stretching in circumferential direction. Said wall is provided with at least one of primary means for increasing the resistance to radially outward bending of the wall, and secondary means for reducing the resistance to stretching in circumferential direction of the wall.

Classes IPC  ?

• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
• F16L 55/165 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau par introduction d'un tuyau dans la section endommagée

Abrégé

The invention provides a process for producing purified natural gas, the process comprising the steps of : expanding a pressurised natural gas stream comprising at least 4 ppmv of mercaptans and supplying it to a first separation column, in which the natural gas stream is separated into a gaseous overhead stream enriched in methane and a first fraction enriched in mercaptans; withdrawing the gaseous overhead stream enriched in methane from the separation column to obtain the purified natural gas; withdrawing the fraction enriched in mercaptans from the separation column; removing mercaptans from the first fraction enriched in mercaptans.

Classes IPC  ?

• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p. ex. de l'hélium, de l'hydrogène
• F25J 3/02 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification par rectification, c.-à-d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide
• C10L 3/10 - Post-traitement de gaz naturel ou de gaz naturel de synthèse
• B01D 53/52 - Sulfure d'hydrogène

Abrégé

A sealing system is provided for use in a wellbore(l) formed in an earth formation whereby a stream of fluid produced from the earth formation (6) flows through the wellbore to surface (3). The sealing system comprises a sealing device (18) arranged to seal a selected portion of the wellbore from the stream of produced fluid, a compound arranged to be absorbed by fluid from the earth formation entering the stream of produced fluid via the selected wellbore portion, and detection means (16) operable to detect said compound in the stream of produced fluid.

Classes IPC  ?

• E21B 33/124 - Unités à bouchons espacés longitudinalement pour isoler les espaces intermédiaires

Abrégé

A method of detecting a lateral boundary of a compacting or expanding region in a subsurface formation, which method comprises determining non-vertical deformation of the earth' s surface above the subsurface formation over a period of time; identifying at least on contraction area and at least one adjacent dilatation area of the earth' s surface from the non-vertical deformation over the period of time; and using the contraction area and the adjacent dilatation area as an indication of a lateral boundary of the compacting or expanding region; and a method for producing hydrocarbons.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

A method of monitoring a subsurface formation underneath a sea bed, the method comprising determining non-vertical deformation of the sea floor over a period of time and inferring a parameter related to a volume change in the subsurface formation from the non-vertical deformation of the sea. Determining the non-vertical deformation of the sea floor comprises selecting a plurality of locations on the sea floor and determining a change in distance between at least one pair of the locations over the period of time.

Classes IPC  ?

• G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes

Abrégé

A process for manufacturing an asphalt paving mixture is disclosed. The process comprises the steps of : i) heating bitumen at a temperature of from 100 to 200°C; ii) heating aggregate at a temperature of from 100 to 20°C; and iii) mixing the hot bitumen with the hot aggregate in a mixing unit. From 10 to 200 wt% of sulphur pellets, based upon the weight of the bitumen, are added in at least one of the steps (i), (ii) or (iii). The sulphur pellets comprise from 1 to 50wt% of a monovinyl aromatic compound, based upon the weight of the sulphur pellets.

Classes IPC  ?

• C04B 22/02 - Éléments
• C04B 26/26 - Matières bitumineuses, p. ex. goudron, brai

Abrégé

A hydrocarbon stream (30), such as natural gas, is commonly cooled together with a first refrigerant stream (140), against an evaporating refrigerant (24) in a series of one or more consecutively arranged common heat exchangers (2), which comprises a first common heat exchanger, upstream of which first common heat exchanger the hydrocarbon stream (10) and the first refrigerant stream (130) are not commonly cooled (4,3). The hydrocarbon stream to be cooled is fed into the first common heat exchanger at a hydrocarbon feeding temperature, while the first refrigerant stream is fed into the first common heat exchanger at a refrigerant feeding temperature. The temperature difference between the hydrocarbon feeding temperature and the refrigerant feeding temperature is lower than 60 -C.

Classes IPC  ?

• F25B 9/02 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant l'effet Joule-ThompsonMachines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant l'effet vortex
• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p. ex. de l'hélium, de l'hydrogène

Abrégé

A hydrocarbon stream (30), such as natural gas, is commonly cooled together with a first refrigerant stream (140), against an evaporating refrigerant (24) in a series of one or more consecutively arranged common heat exchangers (2), which comprises a first common heat exchanger, upstream of which first common heat exchanger the hydrocarbon stream (10) and the first refrigerant stream (130) are not commonly cooled (4,3). The hydrocarbon stream to be cooled is fed into the first common heat exchanger at a hydrocarbon feeding temperature, while the first refrigerant stream is fed into the first common heat exchanger at a refrigerant feeding temperature. The temperature difference between the hydrocarbon feeding temperature and the refrigerant feeding temperature is lower than 60 -C.

Classes IPC  ?

• F25J 1/02 - Procédés ou appareils de liquéfaction ou de solidification des gaz ou des mélanges gazeux nécessitant l'emploi d'une réfrigération, p. ex. de l'hélium, de l'hydrogène
• F25B 9/02 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant l'effet Joule-ThompsonMachines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant l'effet vortex

Abrégé

The invention provides a process for disposal of mercaptans, the process comprising the steps of: (a) contacting a feed gas stream comprising mercaptans with liquid sulphur in a sulphide producing zone at elevated pressure and at a temperature in the range of from 300 to 450°C to obtain a liquid stream comprising sulphur and sulphide compounds; (b) optionally separating the liquid stream obtained in step (a) into a first liquid phase enriched in liquid sulphur and a second liquid phase enriched in sulphide compounds; (c) combusting at least part of the sulphide compounds at elevated temperature in the presence of an oxygen-containing gas in a sulphur dioxide generation zone using a sulphide burner to which burner oxygen-containing gas is supplied, whereby at least part of the sulphide compounds is converted to sulphur dioxide to obtain a gas stream comprising sulphur dioxide.

Classes IPC  ?

• C01B 17/04 - Préparation du soufrePurification à partir de composés sulfurés gazeux, y compris les sulfures gazeux
• B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption

Abrégé

The invention provides a process for removal of metal carbonyls from a synthesis gas stream comprising metal carbonyls, the process comprising the steps of: (a) adsorption of metal carbonyls by contacting the synthesis gas stream with solid adsorbent comprising activated carbon and/or hydrophobic zeolite to obtain solid adsorbent enriched in metal carbonyls and a synthesis gas stream depleted of metal carbonyls; (b) desorption of metal carbonyls by contacting the solid adsorbent enriched in metal carbonyls with CO-containing gas comprising at least 0.5 volume% CO to obtain regenerated adsorbent depleted of metal carbonyls and CO- containing gas enriched in metal carbonyls, wherein the temperature at which metal carbonyl desorption takes place is higher than the temperature at which metal carbonyl adsorption takes place.

Classes IPC  ?

• C01B 3/56 - Séparation de l'hydrogène ou des gaz contenant de l'hydrogène à partir de mélanges gazeux, p. ex. purification par contact avec des solidesRégénération des solides usés
• B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes

Abrégé

The invention provides a process for removal of hydrogen sulphide, iron pentacarbonyl and nickel tetracarbonyl from a feed synthesis gas stream, the process comprising the steps of: (a) removal of hydrogen sulphide and of iron pentacarbonyl by contacting the feed synthesis gas stream with an absorbing liquid comprising water, physical solvent and an amine, to obtain a synthesis gas stream depleted of hydrogen sulphide and depleted of iron pentacarbonyl; (b) adsorption of nickel tetracarbonyl by contacting the synthesis gas stream depleted of hydrogen sulphide and depleted of iron pentacarbonyl with solid adsorbent comprising activated carbon to obtain solid adsorbent enriched in nickel tetracarbonyl and a purified synthesis gas stream.

Classes IPC  ?

• C01B 3/52 - Séparation de l'hydrogène ou des gaz contenant de l'hydrogène à partir de mélanges gazeux, p. ex. purification par contact avec des liquidesRégénération des liquides usés
• C01B 3/56 - Séparation de l'hydrogène ou des gaz contenant de l'hydrogène à partir de mélanges gazeux, p. ex. purification par contact avec des solidesRégénération des solides usés
• B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption

Abrégé

An assembly for producing oil and/or gas through a well traversing stacked oil and/or gas bearing earth layers (2-4) comprises a series of expandable packers (14) and integrated perforating gun and sandscreen assemblies (9-11) mounted on a production tubing (12) such that each integrated perforating gun and sandscreen assembly (9-11) is located adjacent an oil and/or gas bearing earth layer (2-4) and at least one expandable packer (14) is located between a pair of adjacent oil and/or gas bearing earth layers (2-4), and at least one inflow opening (22A-C) arranged in the wall of the production tubing adjacent to each sandscreen assembly. The integrated perforating gun and sandscreen assemblies (9-11) are installed in a single run into the well (1) such that uncontrolled fluid and/or sand influx into the well before installation of the sandscreens (23A-C) and expandable packers (14) is avoided.

Classes IPC  ?

• E21B 43/14 - Extraction d'un puits à horizons multiples
• E21B 43/116 - Perforateurs à balles ou à charge profilée
• E21B 43/08 - Tubes filtres ou crépines
• E21B 33/127 - PackersBouchons à manchon gonflable
• E21B 33/124 - Unités à bouchons espacés longitudinalement pour isoler les espaces intermédiaires

Abrégé

A method is provided of expanding a tubular element from a first inner diameter to a second inner diameter larger than the first inner diameter. The method comprises the steps of: a) installing a sleeve of flexible material in the tubular element; b) installing an expander in the tubular element, the expander being suitable to radially expand the sleeve to an outer diameter larger than said first inner diameter by moving the expander in axial direction through the sleeve; and c) moving the expander in axial direction through the sleeve thereby radially expanding the tubular element from the first inner diameter to the second inner diameter.

Classes IPC  ?

• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
• E21B 29/10 - Remise en état des tubages de puits, p. ex. redressage

Abrégé

A method for controlling and optimizing production operations in various clusters (1) of oil and/or gas production wells (2) and facilities (3), which are equipped with production, pressure, temperature, vibration, flow, seismic and/or other sensors (4) that generate raw reservoir, production and/or production equipment performance data (5), the method comprising: collecting said raw data (5) in at least central data surveillance center (6); processing, monitoring and/or analyzing trends in said collected raw data (5) by at least one central expert support team and/or system (11), optimizing and/or controlling production of said clusters (1) by action taken in at least one regional asset operation control center (8) on the basis of the actionable component performance data (7A) and the actionable total asset control data (10).

Classes IPC  ?

• G05B 15/02 - Systèmes commandés par un calculateur électriques

Abrégé

A method for controlling and optimizing production operations in various clusters (1) of oil and/or gas production wells (2) and facilities (3), which are equipped with production, pressure, temperature, vibration, flow, seismic and/or other sensors (4) that generate raw reservoir, production and/or production equipment performance data (5), the method comprising: collecting said raw data (5) in at least central data surveillance center (6); processing, monitoring and/or analyzing trends in said collected raw data (5) by at least one central expert support team and/or system (11), optimizing and/or controlling production of said clusters (1) by action taken in at least one regional asset operation control center (8) on the basis of the actionable component performance data (7A) and the actionable total asset control data (10).

Classes IPC  ?

• G05B 15/02 - Systèmes commandés par un calculateur électriques

Abrégé

A method for interpreting a plurality of m- dimensional attribute vectors (m2) assigned to a plurality of locations in an n-dimensional interpretation space (n1), which method comprises arranging at least a subset of the attribute vectors as points in an m- dimensional attribute space; defining k classes (k2) of attribute vectors by identifying for each class at least one classification point in attribute space; postulating a classification rule for points in attribute space; determining a class-membership attribute of a point in attribute space using the classification points and the classification rule to obtain a classified point; and assigning a display parameter to the classified point which is related to the class-membership attribute. In one embodiment the display parameter is a mixed display parameter derived from probabilistic membership values each representing a probability that the classified point belongs to a selected class. In another embodiment classified points are displayed in attribute space and in interpretation space at the same time. The method can be used in a method of producing hydrocarbons from a subsurface formation. Also provided are corresponding computer program products and computer systems.

Classes IPC  ?

• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques
• G01V 1/50 - Analyse des données

Abrégé

An asphalt binder characterised in that it contains 0.5 to 20.0% by mass of asphalt and the remainder comprises a petroleum- type solvent-extracted oil is disclosed. The aromatic content of the asphalt binder is not less than 70.0% by mass and the complex elastic modulus for 0.1 rad/sec at 25°C is not more than 10.0 Pa. The asphalt binder is suitable for use as a softener for reclaimed asphalt, rubber extender oils and blending oils.

Classes IPC  ?

• C08L 95/00 - Compositions contenant des matières bitumeuses, p. ex. asphalte, goudron ou brai
• C08K 5/01 - Hydrocarbures

Abrégé

A string of interconnected strain sensors applied to a cylindrical object for monitoring deformation of the object. The string of interconnected strain sensors is applied in a selected zig-zag pattern. A possibility is to drape a pliable support structure around the object, to which the string of strain sensors has been mechanically coupled in the selected zig-zag pattern.

Classes IPC  ?

• G01B 7/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les déformations dans un solide, p. ex. au moyen d'une jauge de contrainte à résistance
• G01B 7/287 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des contours ou des courbes en utilisant plusieurs transducteurs fixes fonctionnant simultanément
• G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p. ex. indicateur optique de déformation
• G01B 11/245 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en utilisant plusieurs transducteurs fixes fonctionnant simultanément
• G01B 21/32 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la déformation dans un solide
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

The invention relates to a method of radially expanding a tubular element extending into a wellbore formed in an earth formation. The method comprises inducing the wall of the tubular element to bend radially outward and in axially reverse direction so as to form an expanded tubular section extending around a remaining tubular section of the tubular element, wherein said bending occurs in a bending zone of the tubular element. The method further comprises increasing the length of the expanded tubular section by inducing the bending zone to move in axial direction relative to the remaining tubular section. Said wall includes a material that is plastically deformed in the bending zone during the bending process so that the expanded tubular section retains an expanded shape as a result of said plastic deformation.

Classes IPC  ?

• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
• F16L 55/165 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau par introduction d'un tuyau dans la section endommagée

Abrégé

A method is disclosed for controlling water condensation in the pores of a near wellbore region of a permeable formation through which wet natural gas flows into an inflow section of an oil and/or gas production well, the method comprising controlling fluid transfer through said region such that development of a water bank resulting from condensation of water in said region is inhibited or promoted. If the well is a gas production well then development of a water bank may be inhibited by controlling pressure drawdown, cyclic well shut in, fracturing and/or injection of heat generating and/or water transporting chemicals.

Classes IPC  ?

• E21B 43/32 - Prévention des phénomènes de cône d'eau ou de gaz, c.-à-d. formation autour des puits d'une colonne conique d'eau ou de gaz

Abrégé

A method for describing one or more relations in a physical or other system on the basis of an algebraic model of the system comprises the steps of: a) collecting data comprising measurements of different quantities relating to the system; b) interpreting the measurements of the different quantities as evaluations of different variables, which together comprise a polynomial ring; c) calculating an ideal of the ring, the generators of which substantially vanish on the collected data; d) interpreting the generators as polynomial relations between the variables of the system; e) reformulating at least one of the polynomial relations as an algebraic model for one of the variables in terms of the other variables involved in this relation; and f) the algebraic model is induced to generate one or more governing relations between parameters that govern the system using only measured data of the system. The algebraic model used in the method according to the invention is also identified as the Approximate Buchberger-Moeller algorithm, which computes a substantially or approximately vanishing ideal of a finite set of points and which remains numerically stable if the points are imprecise measured data.

Classes IPC  ?

• G06F 17/18 - Opérations mathématiques complexes pour l'évaluation de données statistiques
• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits

Abrégé

A method and cyclonic separator are disclosed for degassing a fluid mixture comprising a carrier liquid and gaseous and/or vaporizable components, wherein: the fluid mixture is accelerated in a throat section (6, 21) of a vortex tube (1, 20) such that the static pressure of the fluid mixture is decreased and vaporizable components evaporate into a gaseous phase and the fluid mixture flows as a substantially homogeneously dispersed gas-liquid mixture through the throat section; the accelerated fluid mixture is induced to swirl within a tubular mid section of the vortex tube such that the fluid mixture is separated by centrifugal forces into a degassed liquid fraction and a gas enriched fraction; the degassed liquid fraction is induced to flow into a annular liquid outlet conduit (4, 21); and the gas enriched fraction is induced to flow into a central gas outlet conduit(3, 24). An advantage of inducing the fluid mixture to flow as a substantially homogeneously dispersed gas-liquid mixture through the throat section is that the velocity of sound in such a mixture is low, thereby increasing the Mach number and the pressure reduction in the throat section and enhancing evaporation of gas bubbles in the mixture.

Classes IPC  ?

• B04C 3/00 - Appareils dans lesquels la direction axiale du tourbillon ne change pas
• B04C 3/06 - Structures des entrées ou sorties de la chambre où se produit le tourbillon
• B04C 5/06 - Entrées axiales
• B04C 5/13 - Structure du guide pour la phase légère, p. ex. pour faire sortir la matière en spirale ou en la dispersant formé comme un capteur de tourbillon, et s'étendant à l'intérieur de la chambre du tourbillonÉvacuation du viseur de tourbillon autrement que par le haut du cycloneDispositifs de commande de l'évacuation de la phase légère
• B04C 5/103 - Bâtis ou éléments des appareils, p. ex. volets ou guides
• B04C 5/181 - Volets ou parties centrales des ouvertures de décharge
• B04C 5/16 - Structure du guide pour la phase lourdeStructure de l'apexAménagement d'évacuation avec sorties à ouvertures de dimensions variables dans le guide de phase lourde
• B01D 19/00 - Dégazage de liquides

Abrégé

The present invention relates to a method that allows the determination of the contribution of a well to the production of a cluster of wells, of which the produced streams of well effluents are commingled and routed via a separation assembly in at least nominally separated streams of crude oil, natural gas and water, based on production measurements made on the nominally separated streams of crude oil, natural gas and water downstream of the separation assembly (production and/or bulk separator), and in the absence of a dedicated well test facility for the direct measurement of the production from a tested well.

Classes IPC  ?

• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
• G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
• G01F 15/08 - Séparateurs d'air ou de gaz en combinaison avec des compteurs de liquidesSéparateurs de liquide en combinaison avec des compteurs de gaz

Abrégé

The present invention relates to a method to optimise production of a cluster of wells on the basis of an estimation of the contributions of individual wells to the production of the cluster of wells, tailored to the particular constraints and requirements of the oil and gas production environment. The wells in the cluster may differ in terms of nature and flux of its effluents, and/or mode of operation, stimulation and/or manipulation. The wells may also produce from multiple subsurface zones or branches. The wellheads of the wells in the cluster may be located on land or offshore, above the surface of the sea or on the seabed. The method according to the invention may be used to generate one or more optimisation models, taking into account only significantly relevant well and production syatem characeristics and effects.

Classes IPC  ?

• E21B 43/14 - Extraction d'un puits à horizons multiples
• E21B 47/06 - Mesure de la température ou de la pression
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

The invention provides a process for producing a gas
stream depleted of RSH from a feed gas stream comprising
natural gas, RSH and in the range of from 1 ppmv to 1
vol% based on the total feed gas stream of aromatic
compounds selected from the group of benzene, toluene, o-xylene,
m-xylene and p-xylene, the process comprising the
steps of:
(a) contacting the feed gas stream with absorbing liquid
comprising a physical solvent in an aromatic compound
removal zone to obtain loaded absorbing liquid comprising
aromatic compounds selected from the group of benzene,
toluene, o-xylene, m-xylene and p-xylene and a gas stream
depleted of these aromatic compounds;
(b) contacting the gas stream obtained in step (a) with
solid adsorbent in a mercaptan removal zone to obtain
solid adsorbent loaded with RSH and the gas stream
depleted of RSH.

Classes IPC  ?

• B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
• B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption

Abrégé

Method for determining a preferred application of a plurality of strain
sensors or sensors to a structure are disclosed for monitoring and imaging
deformation of the structure as it is subjected to various forces.

Classes IPC  ?

• G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p. ex. indicateur optique de déformation

Abrégé

The present invention relates to a method and system for determining
multiphase fluid streams flowing from individual wells of a cluster of crude
oil, gas and/or other fluid production wells, wherein the fluid streams
produced by the individual wells are commingled and routed via a fluid
separation assembly into fluid outlet conduits for transportation of at least
partly separated streams of crude oil, gas and/or other fluids.

Classes IPC  ?

• E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
• G01N 33/28 - Huiles

Abrégé

A method is disclosed for injecting lift gas or other fluid into a production
conduit of an oil well via one or more wear resistant downhole gas lift flow
control devices which each comprise: a tubular valve housing (1) comprising a
flow passage (2) having an upstream end (9) which is connected to a lift gas
supply conduit and a downstream end (10) which is connected to the interior of
the production conduit; a flapper type valve body (3) which is pivotally
connected to the valve housing (1) and is arranged in the flow passage (2)
such that if the valve body is pivoted in the open position the valve body is
oriented substantially parallel to the flow passage and that if the valve body
is pivoted in the closed position the valve body is oriented substantially
perpendicular to the flow passage and is pressed against a ring shaped valve
seat (4), thereby blocking passage of lift gas through the flow passage(2); a
valve protection sleeve (5) which is slidably arranged in the flow passage (2)
between a first position (shown in Fig.2) wherein the sleeve (5) extends
through the ring-shaped valve seat, whilst the valve body (3) is pivoted in
the open position thereof, thereby protecting the valve body and seat against
wear by the flux of lift gas or other fluid and a second position (shown in
Fig. 1) wherein the sleeve (5) extends through the section of the flow passage
(2) upstream of the valve seat (4), whilst the valve body (3) is pivoted in
the closed position thereof; and a flow restrictor (8) forming part of the
valve protection sleeve (5), which is dimensioned such that the flux of lift
gas flowing through the flow restrictor (8) creates a pressure difference
which induces the sleeve (5) to move towards the first position.

Classes IPC  ?

• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits

Abrégé

A system for measuring a voltage differential in a current-carrying pipe
(102)using a propulsion vehicle (108) for conveying the system inside the pipe
(102), the system comprising a first contact (116) for maintaining electrical
contact with the pipe (102) as the vehicle (108) moves through the pipe (102),
a second contact (118) positioned in a spaced apart relationship from said
first contact (116) for maintaining electrical contact with the pipe (102) as
the vehicle (108) moves through the pipe (102), and a voltage reading device
(212) connected to said first contact (116) and said second contact (116) for
measuring the voltage between said first contact (116) and said second contact
(118) as the vehicle moves through the pipe.

Classes IPC  ?

• C23F 13/04 - Commande ou régulation des paramètres souhaités
• F16L 55/26 - Hérissons ou chariots, c.-à-d. dispositifs pouvant se déplacer dans un tuyau ou dans une conduite et portant ou non un moyen de propulsion autonome
• F16L 58/00 - Protection des tuyaux ou des accessoires pour tuyaux contre la corrosion ou l'entartrage
• F17D 5/00 - Protection ou surveillance des installations
• G01R 31/00 - Dispositions pour tester les propriétés électriquesDispositions pour la localisation des pannes électriquesDispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs

Abrégé

An electrochemical element for use at a high temperature has an anode, a
cathode comprising an intercalation material having an upper
reversible~potential-limit of at most 4 V versus Li/Li+ as active material,
and an electrolyte arranged between the cathode and anode, which electrolyte
comprises an ionic liquid with an anion and a cation comprising a
pyrrolidinium ring structure having four Carbon atoms and one Nitrogen atom.
Experiments revealed that rechargeable batteries comprising such an
intercalation material and N-R1-N-R2-pyrrolidinium, wherein Rl and R2 are
alkyl groups and R1 may be methyl and R2 may be butyl or hexyl, are
particularly suitable for use at a temperature of up to about 150 degrees
Celsius and may be used in oil and/or gas production wells.

Classes IPC  ?

• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• H01G 9/035 - Électrolytes liquides, p. ex. matériaux d'imprégnation
• H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
• H01M 6/20 - Éléments avec électrolytes non aqueux avec électrolyte solide fonctionnant à haute température
• H01M 10/052 - Accumulateurs au lithium
• H01M 10/39 - Accumulateurs non prévus dans les groupes fonctionnant à haute température

Abrégé

A method of determining a fluid inflow profile along the length of a permeable
inflow region of an underground wellbore compring: -transferring heat into or
from the permeable inflow region of the wellbore during a well shut in period;
-starting production of hydrocarbon fluids via said permeable inflow region; -
measuring substantially simultaneously the temperature of the fluids at
various points of the inflow region; - determining at selected intervals of
time after production start up a temperature profile of the inflow region on
the basis of the thus measured temperatures; and - determining a fluid inflow
profile of said inflow region on the basis of a comparison of the determined
temperature profiles at selected intervals after production start up. The
heater cable may comprise a layer of compacted mineral powder and temperatures
may be measured with an optical fiber.

Classes IPC  ?

• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide

Abrégé

A method and system for injecting a treatment fluid into a well comprising a
surface controlled subsurface safety valve (5), which is controlled by varying
fluid pressure in a valve control conduit (8) which extends from the safety
valve to a wellhead of the well, wherein treatment fluid is injected into the
well via the valve control conduit (8) to a fluid injection opening for
discharging treatment fluid into the well; and wherein a treatment fluid
injection conduit (12) is arranged which is connected to the valve control
conduit (8), and which comprises the at least one treatment fluid injection
opening and a one way check valve (13) which prevents fluid flow from each
treatment fluid injection opening via the treatment fluid injection conduit
into the valve control conduit, which treatment fluid injection conduit is
arranged into a section of the well which is located below the safety valve
(5) such that at least one treatment fluid injection opening is located below
the safety valve.

Classes IPC  ?

• E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage

Abrégé

A method of investigating a reservoir region in a subsurface formation by a
time-lapse seismic survey, which subsurface formation comprises a further
formation region adjacent to the reservoir region, which method comprises the
steps of obtaining data from a time-lapse seismic survey including seismic
data of the subsurface formation at a first point in time and a later point in
time, processing the seismic data to obtain a seismic representation of change
in a predetermined seismic parameter in the further formation region, which
seismic parameter is dependent on stress; interpreting the seismic
representation of change in the seismic parameter in the further formation
region for an indication of changes of stress distribution in the further
formation region; and deriving a property of the reservoir region using the
indication of change of stress distribution in the further formation region.

Classes IPC  ?

• G01V 1/30 - Analyse

Abrégé

A method for interconnecting electrical conduits in an underground borehole by
means of a self-cleaning downhole electrical connector with a static and a
moveable connector part (4,3), comprises installing the static connector part
(4) within the borehole such that a central throughbore (7) within the static
part (4) provides a passage for fluid and debris passage and for access there
beneath after retrieval of the moveable connector part (3); and lowering the
movable connector part (3) on top of the static connector part (4) such that
pairs of electrical contacts (8 and 11A-C) of the static and movable connector
parts (4,3) intermesh and fluid and debris is discharged via the central
throughbore into the section of the borehole beneath the static connector
part. The connector may be used to connect a wireline retrievable electrical
submersible pump (ESP) system (2) to an electrical power supply line (5) which
may remain in the borehole when the ESP system (2) is retrieved for
inspection, repair or replacement.

Classes IPC  ?

• E21B 17/02 - AccouplementsJoints
• H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes
• H01R 13/523 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes pour l'emploi sous l'eau

Produits et services

(1) Ice scrapers for vehicle windows. (2) Videos, magnetized decals. (3) Penlights, flashlights. (4) Key rings, key chains, lapel pins. (5) Brochures, pens. (6) Tote bags, sports bags. (7) Bottle openers, coffee mugs, travel mugs, coasters. (8) Sweaters, t-shirts, golf shirts, cloth jackets and hats. (9) Belt buckles. (1) Planning, designing, engineering, managing and operating oil sands mine and extraction facilities.