Oilfield pumping systems are improved by the incorporation of a reciprocating gas engine having a mode of operation that seeks to maintain a constant engine speed or rotational velocity. A driveline including a transmission with shiftable gears connects the reciprocating gas engine with a hydraulic pump configured for use in oilfield hydraulic fracturing operations. A control system is configured with programmatic instructions for operating a dual electric machine that alters torque emanating from the reciprocating gas engine to facilitate upshifting of gears in the transmission. This may be done by preloading the reciprocating gas engine with reverse or negative torque operating against that emanating from the reciprocating gas engine prior to the upshifting of gears, and/ or by providing positive torque to assist that of the reciprocating gas engine after the upshifting of gears.
F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
E21B 41/00 - Equipment or details not covered by groups
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
F04B 17/05 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
F04B 19/22 - Other positive-displacement pumps of reciprocating-piston type
G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
H02J 7/14 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
E21B 43/34 - Arrangements for separating materials produced by the well
Oilfield pumping systems are improved by the incorporation of a reciprocating gas engine having a mode of operation that seeks to maintain a constant engine speed or rotational velocity. A driveline including a transmission with shiftable gears connects the reciprocating gas engine with a hydraulic pump configured for use in oilfield hydraulic fracturing operations. A control system is configured with programmatic instructions for operating a dual electric machine that alters torque emanating from the reciprocating gas engine to facilitate upshifting of gears in the transmission. This may be done by preloading the reciprocating gas engine with reverse or negative torque operating against that emanating from the reciprocating gas engine prior to the upshifting of gears, and/or by providing positive torque to assist that of the reciprocating gas engine after the upshifting of gears.
A system for determining pressure in a hydraulic fracturing system for a well includes a processing module executing code and configured to receive a plurality of input parameters. The processing module can predict either a bottomhole pressure, based on statistical predictions and physics-based predictions, or a surface pressure based on the predicted bottomhole pressure.
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
G01V 99/00 - Subject matter not provided for in other groups of this subclass
A stimulation fluid including (i) an aqueous solution of an ammonium salt capable of being exothermally oxidized to produce heat and gas, (ii) an aqueous solution of an oxidizing agent capable of oxidizing the ammonium salt; (iii) a water-soluble inorganic acid salt and/or an organic carboxylic acid salt of a tertiary amine; (iv) a low molecular weight carboxylic acid; and (v) a high salinity brine containing divalent metal ions; and (vi) optionally, a surfactant.
C09K 8/592 - Compositions used in combination with generated heat, e.g. by steam injection
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
An articulation mechanism for large scale mobile aggregate system equipment. The mechanism includes a screw device that is pivotally secured to an elongated portion of the equipment to drive its movement to and from a collapsed position. The screw device is driven by a screw jack and moved within a housing while the housing itself is pivotally secured to another portion of the equipment. Rollers within the housing may be used to stabilize the lateral movement of the screw device during the opening, closing or self-locking of the elongated portion by the mechanism.
A method utilizes a large-scale aggregate management system at a worksite. Mobile equipment is delivered with an elongated portion in a collapsed position relative another portion. A screw jack laterally moves a screw device extending/retracting the screw device. An end of the screw device is pivotally secured to the elongated portion and the screw device housing is pivotally coupled to the other portion of the equipment. Lateral movement of the screw device causes the elongated portion to pivot from the collapsed position to an operating position relative to the another portion. The screw device supports a load from the elongated equipment during movement from the collapsed position to the operating position. The screw device holds the elongated portion in the operating position in a substantially self-locking manner. The mobile equipment is operated, while the elongated portion is in the operating position, to deliver aggregate for a well related application.
A system and methodology facilitates the handling of oilfield material. The oilfield material is stored in at least one silo which enables use of gravity to feed the oilfield material to a blender or other suitable equipment. Each modular silo is transportable and may be engaged with a support structure via a pivot connection. Once engaged, the silo is pivoted to a raised, upright position on the support structure. The oilfield material is then moved to an interior of the silo, and gravity may be used to feed the oilfield material to a blender or other equipment in a controlled manner.
A pumping system including a plurality of pumps each having a pump fluid outlet, a drive shaft, a prime mover, and fluid displacing members operatively coupled with the drive shaft. A common fluid conduit may be fluidly coupled with each pump fluid outlet. A control system of the pumping system includes position sensors operable to generate information relating to phase and/or speed of each pump, pressure sensors operable to generate information relating to fluid pressure spikes, and a controller in communication with the position and pressure sensors. The controller is operable to cause the prime movers to adjust the phasing of the pumps with respect to each other, based on the information relating to fluid pressure spikes, and synchronize the speed of the pumps.
F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
F04B 23/06 - Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
A system for producing a wellbore fluid including a process fluid source, a rotating apparatus, and a motor directly coupled to the rotating apparatus. The motor is configured to receive a coolant and transfer heat from the motor to the coolant. The rotating apparatus is configured to receive process fluid from the process fluid source and mix the process fluid received from the process fluid source with one or more additives to produce a wellbore fluid. The coolant transfers heat to the process fluid, the wellbore fluid or both.
This disclosure introduces chassis alignment assemblies for aligning a chassis with a support structure. An example implementation includes a chassis having first wheels, a jacking assembly coupled to the chassis and having second wheels, and a jacking actuation member operable to vertically displace the second wheels relative to the chassis to engage the ground and raise the first wheels off of the ground such that the jacking assembly supports an end of the chassis. Another example implementation includes a chassis, having first wheels, and an outrigger assembly having: a frame movable between transport and alignment orientations; second wheels; and an outrigger actuation member operable to move the frame relative to the chassis.
An apparatus comprising a chassis, a mast movably coupled with the chassis, a first actuator operable to pivot the mast with respect to the chassis along a substantially vertical plane, and a second actuator operable to move the mast in a lateral direction with respect to the chassis along a substantially horizontal plane. The mast may support an oilfield material container. By pivoting the mast, the first actuator may be operable to pivot the oilfield material container with respect to the chassis along a substantially vertical plane. By moving the mast, the second actuator may be operable move the oilfield material container in a lateral direction with respect to the chassis along a substantially horizontal plane.
A mobile support structure (MSS) includes a frame structure for receiving modular silos, a base moveable between transportation and support configurations, and connectors coupling with the silos. A mobile erecting assembly includes a chassis, a lift structure rotatable between transportation and mounting orientations while engaged with a silo, an engagement structure movable between first and second positions while engaged with the silo, and an actuator to move the engagement structure and silo between the first and second positions. The silo is connected to the mobile erector assembly in the transportation orientation, and the mobile erector assembly is then aligned relative to the MSS, such as by engaging an alignment member of the mobile erector assembly with a chassis alignment post of the MSS. The mobile erector assembly is then operated to move the silo to the mounting orientation, and the silo is then coupled to the MSS.
An apparatus includes a chassis and a mast movably coupled with the chassis and supporting an oilfield material container. The apparatus also includes a first actuator which is operable to pivot the mast, and thus the oilfield material container, with respect to the chassis in a substantially vertical plane. The apparatus also includes a second actuator operable to move the mast, and thus the oilfield material container, in a substantially horizontal plane.
A chassis alignment assembly comprises a chassis and an outrigger assembly. The chassis comprises a plurality of wheels. The outrigger assembly comprises a frame movably coupled to the chassis for movement between a transport orientation and an alignment orientation. The frame extends beyond an end of the chassis when in the alignment orientation. At least one axle is connected to the frame and extends transverse to a longitudinal axis of the chassis. At least one wheel is connected to the at least one axle. An outrigger actuation member is coupled between the frame and the chassis. A method of erecting a modular silo using the chassis alignment assembly is also disclosed.
Systems and methods for cooling process equipment are provided. The system includes a process fluid source, and a heat exchanger fluidly coupled with the process equipment and the process fluid source. The heat exchanger is configured to receive a process fluid from the process fluid source and transfer heat from the process equipment to the process fluid. The system also includes a control system fluidly coupled with the heat exchanger. The control system is configured to vary a temperature of the process fluid heated in the heat exchanger. Further, at least a portion of the process fluid heated in the heat exchanger is delivered into a wellbore at a temperature below a boiling point of the process fluid.
E21B 41/00 - Equipment or details not covered by groups
E21B 33/13 - Methods or devices for cementing, for plugging holes, crevices or the like
E21B 36/00 - Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
F28F 27/02 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
Systems and methods for cooling process equipment are provided. The system includes a process fluid source, and a heat exchanger fluidly coupled with the process equipment and the process fluid source. The heat exchanger is configured to receive a process fluid from the process fluid source and transfer heat from the process equipment to the process fluid. The system also includes a control system fluidly coupled with the heat exchanger. The control system is configured to vary a temperature of the process fluid heated in the heat exchanger. Further, at least a portion of the process fluid heated in the heat exchanger is delivered into a wellbore at a temperature below a boiling point of the process fluid.
F25B 49/00 - Arrangement or mounting of control or safety devices
F28F 27/02 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
17.
SYSTEM AND METHOD FOR MITIGATING DUST MIGRATION AT A WELLSITE
A system and method for mitigating dust migration at a wellsite is described. An oilfield material reservoir is provided for receiving oilfield material, the oilfield material reservoir having an enclosure. A dust collector is provided for collecting dust generated at the oilfield material reservoir, and a duct in communication with the enclosure and the dust collector is provided for transferring dust generated at the oilfield material reservoir to the dust collector.
A multiplex fluid pump assembled from a plurality of pump bodies connected side by side between opposing end plates with a plurality of fasteners tightened to compress the pump bodies between the end plates. Raised surfaces on opposite exterior side surfaces of each pump body are engaged with an adjacent end plate or an adjacent pump body to apply a pre-compressive force at the raised surfaces and thereby inhibit the initiation of fatigue cracks.
An apparatus for mixing and delivering a material to a high pressure flow of fluid, comprises a pressure vessel comprising: a particulate solids inlet aperture located substantially in an upper portion of the pressure vessel; a first liquid inlet in fluid communication with a first high pressure line and the pressure vessel and comprising a first valve; and a first outlet in fluid communication with the pressure vessel and a second high pressure line and comprising a third valve.
A delivery unit for providing aggregate to a worksite, such as a wellsite location. The unit may include a mobile chassis for accommodating a plurality of modular containers which in turn house the aggregate. As such, a weight measurement device may be located between each container and the chassis so as to monitor aggregate levels within each container over time. The units may be particularly well suited for monitoring and controlling aggregate delivery during a fracturing operation at an oilfield. The modular containers may be of an interchangeable nature. Furthermore, a preferably wireless control device may be provided for monitoring and directing aggregate delivery from a relatively remote location.
A mechanism for pressurized delivery of material into a well without exposure to a high pressure pump. The mechanism may include material delivery equipment (175) that is coupled to the high pressure pump or other pressure inducing equipment through a material carrier (201) that intersects a fluid line (170) from the pump. The material carrier (201) may include chambers (290, 295) that are reciprocated or rotated between positions that are isolated from the fluid line (170) and in communication with the fluid line (170). While isolated from the fluid line (170), the chambers (290, 295) may be filled with oilfield material (275) which may then be delivered to the fluid line (170) when positioned in communication therewith. In this manner, a supply of the oilfield material (179) may be retained in a substantially isolated state relative to the pump and components thereof which may be susceptible to damage from exposure to the oilfield material (275).
patents
