Abstract:
A reciprocating pump includes a fluid section that includes fluid-displacing members and a power section that includes crossheads coupled to a respective fluid-displacing member. The power section actuates the fluid section by actuating the crossheads through respective crosshead bores formed through the power section. The power section also includes structural members, pairs of support plates, and pairs of arcuate crosshead sections secured in place between the structural members against a respective pair of support plates. Each pair of the arcuate guide sections comprises a top section and a bottom section that form a portion of a respective crosshead bore. Each pair of the arcuate crosshead guide sections are also secured in place using clamping segments secured to edges of windows of the structural members by bolts extending through interior passages of the clamping segments and having threads that mate with threaded holes extending into the edges of the windows.
Abstract:
A crosshead assembly for a reciprocating pump. The crosshead assembly has a crosshead and a connecting rod configured to connect with a crankshaft of the reciprocating pump. Trunnions detachably connect with the connecting rod and facilitate pivotable connection of the connecting rod and the crosshead.
Abstract:
A downhole tool system may include one or more containers to hold waste product and a tractor to convey the one or more containers to a storage location within a wellbore. The downhole tool system may also include an anchor to seal against the wellbore and secure the containers at the storage location. Additionally, the downhole tool system may include a disconnect tool to separate the tractor from the containers such that the tractor may be removed from the wellbore while leaving the containers at the storage location.
Abstract:
A system for generating variable frequency tube waves includes a high pressure multiplex pump having a number of plungers, with each plunger operatively coupled to a suction valve on a suction side and a discharge valve on a discharge side. The suction valve or the discharge valve of a first one of the plungers includes an opening, such that the modified plunger on a discharge stroke pushes fluid through the opening in the suction or discharge valve. The system includes a tubular fluidly coupling the high pressure multiplex pump to a wellbore, and a pressure sensor that receives tube waves generated by the high pressure multiplex pump and reflected from the wellbore.
Abstract:
An embodiment of a method of operating at least two pressure vessels to inject a particulate slurry into a high-pressure line, comprises a first operating cycle comprising: isolating a pressure vessel from the high-pressure line, introducing, under low-pressure conditions, particulate solids into the pressure vessel through a particulate solids inlet aperture, a second operating cycle comprising: providing high-pressure flow into the pressure vessel, and providing a high-pressure slurry flow from the pressure vessel into the high-pressure line. The method further comprises causing a pressure vessel to operate in the first operating cycle while operating a pressure vessel in the second operating cycle, and synchronizing switching a first vessel from the first operating to a second operating cycle and switching a second vessel from the second operating cycle to the first operating cycle such that at least one of the vessels is operating in the second operating cycle.
Abstract:
A method that is usable with a well includes introducing solids into a pneumatic stream to produce a solids-containing pneumatic stream; communicating the solids-containing pneumatic stream to a blender assembly to mix the solids with at least one other material to produce a flow; and pumping the flow into the well.
Abstract:
A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.
Abstract:
A method including obtaining a first image of a geographical location and a physical object located therein. Pixels in the first image are assigned to corresponding points in a Cartesian coordinate system defined specifically for the first image. The resulting virtual map includes a virtual representation of the physical object, a set of Cartesian coordinates assigned to a set of pixels in the pixels, and a set of Cartesian rotation angles assigned to the set of pixels. A first transform is calculated that scales the Cartesian coordinate system to a physical scale of the geographical location. A data structure stored in a data repository is formed by applying the first transform to the virtual map. The data structure includes the set of pixels, a set of scaled Cartesian coordinates, the set of Cartesian rotation angles, and a physical scale virtual representation of the physical object.
Abstract:
A pump has power and fluid ends wherein one or more of the drive rods are offset from the plungers. An offset coupler connects a drive rod to an offset plunger. A method includes connecting the offset power end to the standard fluid end using the offset coupler. A repair and maintenance system includes inventories of standard fluid ends, power ends including offset power ends, and adapters, and a population of in service pumps, whereby the pumps can be repaired by removing and replacing the power ends from inventory using the adaptor where the replacement power end unit is offset. Another method includes removing and replacing the power end with one from the inventory, wherein the adapter is used in the case of an offset power end, whereby the offset and standard power ends may be used interchangeably.
Abstract:
A fluid tank sized to be deliverable by a land based transport, and a means for pressurizing the fluid tank. The fluid tank may be used in oilfield operations field generally, but not exclusively. The fluid tank may be useful for fluid management in a hydraulic fracturing environment.