Systems and methods to enhance the flow of fracturing fluid into a wellhead during a high-pressure fracturing operation may include providing a pump frame and a crankshaft. A plurality of first plungers may be connected to the crankshaft and may reciprocate in a first plane. The hydraulic fracturing pump also may include a plurality of second plungers connected to the crankshaft and positioned to reciprocate in a second plane. The first plane and the second plane may define a non-zero offset angle between the first plane and the second plane. The crankshaft may include a plurality of crankpins, and each of the crankpins may be connected to one of the first plungers and one of the second plungers. The first plungers may pump a first fracturing fluid and the second plungers may pump a second fracturing fluid different from the first fracturing fluid.

Systems and methods to enhance the flow of fracturing fluid into a wellhead during a high-pressure fracturing operation may include providing a pump frame and a crankshaft. A plurality of first plungers may be connected to the crankshaft and may reciprocate in a first plane. The hydraulic fracturing pump also may include a plurality of second plungers connected to the crankshaft and positioned to reciprocate in a second plane. The first plane and the second plane may define a non-zero offset angle between the first plane and the second plane. The crankshaft may include a plurality of crankpins, and each of the crankpins may be connected to one of the first plungers and one of the second plungers. The first plungers may pump a first fracturing fluid and the second plungers may pump a second fracturing fluid different from the first fracturing fluid.

A gearbox is coupled to a power end housing of a reciprocating pump, where the gearbox includes at least one support member having a first end securely affixed to the gearbox, and the at least one support member having a second end securely affixed to an immobile part of the reciprocating pump for supporting the gearbox and resisting movement of the gearbox relative to the reciprocating pump.

The present disclosure provides an oil-scavenge pump, which includes a cap member, a piston member, a resilient member and a filter member. The filter member interconnects the cap member and the piston member. The resilient member is disposed between the cap member and the piston member. The cap member includes a cap head, a pump valve connected to the cap head, a first-resilient unit disposed and a first sphere disposed between the first-resilient unit and the pump valve. The piston member includes a main portion, a piston seat, a second-resilient unit, a second sphere and a rod portion. The piston seat has two ends respectively connected to the piston head and the rod portion. The second-resilient unit and the second sphere are disposed between the piston head and the piston seat. The filter member is mounted to surround the rod portion and engaged with the pump valve.

A positive displacement pump includes a suction cover disposed in a suction access bore defined in the fluid end and housing, where the suction cover is configured to cover the suction access bore. A retainer nut is configured for abutting against the suction cover and retaining the suction cover within the suction access bore. A suction gland has an inner circumferential threaded interface configured to engage an external circumferential threaded interface defined on the retainer nut, and the suction gland has a plurality of threaded openings configured to receive a plurality of threaded fasteners that can be used for securely fastening the suction gland to the fluid end housing.

Systems and methods to enhance the flow of fracturing fluid into a wellhead during a high-pressure fracturing operation may include providing a pump frame and a crankshaft. A plurality of first plungers may be connected to the crankshaft and may reciprocate in a first plane. The hydraulic fracturing pump also may include a plurality of second plungers connected to the crankshaft and positioned to reciprocate in a second plane. The first plane and the second plane may define a non-zero offset angle between the first plane and the second plane. The crankshaft may include a plurality of crankpins, and each of the crankpins may be connected to one of the first plungers and one of the second plungers. The first plungers may pump a first fracturing fluid and the second plungers may pump a second fracturing fluid different from the first fracturing fluid.

Systems and methods to enhance the flow of fracturing fluid into a wellhead during a high-pressure fracturing operation may include providing a pump frame and a crankshaft. A plurality of first plungers may be connected to the crankshaft and may reciprocate in a first plane. The hydraulic fracturing pump also may include a plurality of second plungers connected to the crankshaft and positioned to reciprocate in a second plane. The first plane and the second plane may define a non-zero offset angle between the first plane and the second plane. The crankshaft may include a plurality of crankpins, and each of the crankpins may be connected to one of the first plungers and one of the second plungers. The first plungers may pump a first fracturing fluid and the second plungers may pump a second fracturing fluid different from the first fracturing fluid.

A pump including a housing defining a plurality of inlet bores. A first interior wall is arranged to at least partially define a first of the plurality of inlet bores. The first interior wall has a contour in a cross section taken normal to the plunger axes. The first interior wall is at least partially defined by the revolution of the contour about a first inlet axis that is normal to and intersects a first of the plurality of plunger axes. The contour includes a cylindrical portion arranged parallel to the first inlet axis, a planar portion extending in a direction perpendicular to the first inlet axis and spaced a first distance from the plunger axis, and a convex bulge portion extending from the cylindrical portion and spaced a second distance from the plunger axis. The contour further includes a V-shaped groove portion extending from the convex bulge portion.

A fluid routing plug for use with a fluid end section. The fluid end section being one of a plurality of fluid end sections making up a fluid end side of a high pressure pump. The fluid routing plug is installed within a horizontal bore formed in a fluid end section and is configured to route fluid between an intake and discharge bore. The fluid routing plug comprises a plurality of first and second fluid passages. The first and second passages do not intersect and are offset from one another. The first fluid passages are configured to direct fluid delivered to the horizontal bore from intake bores towards a reciprocating plunger. The second fluid passages are configured to direct fluid pressurized by the plunger towards a discharge bore.

A hub puller kit for pulling hubs off of power ends of frac pumps, and a method of removing a hub from a pinion shaft of a power end using the hub puller kit. The hub puller kit has an adapter flange formed out of a monolithic body with fastener openings, and a hydraulic actuator coupled to the adapter flange. The adapter flange has a stepped surface formed on a first surface and a recessed surface formed in a second surface, and a central opening having a threaded flange portion that extends from the stepped surface to the recessed surface. The hydraulic actuator has a hydraulic cylinder and a hydraulic plunger disposed at least partially within the hydraulic cylinder, and a threaded actuator portion that engages the threaded flange portion to couple the hydraulic actuator to the adapter flange.