Abstract: The present disclosure provides a valve seat assembly for a fluid end of a hydraulic fracturing pump. The valve seat assembly includes a valve seat having a substantially cylindrical body defined along an axis. The valve seat has a first seat end and a second seat end with a through bore extending between the first and second seat ends. The cylindrical body has an inner cylinder surface and an exterior cylinder surface with an annular flange formed along the exterior cylinder surface adjacent the first seat end. The through bore expands from a first diameter to a second diameter adjacent the first seat end. The valve seat assembly further includes a leak detection notch formed in the exterior cylinder surface between the annular flange and the second seat end.

Abstract: An electric drive hydraulic fracturing pump system includes one or more electric motors, with each electric motor electrically coupled to a dedicated dual inverter to control operation of the motor. A plurality of electric motors may be coupled to each end of a pump crankshaft and configured to provide rotational power to the power end of a hydraulic fracturing pump through a planetary gearset coupled to each end of the crankshaft. A hydraulic cooling circuit having a first and second cooling systems may be used to regulate the temperature of the electric motors and dual inverters.

Abstract: A hydraulic fracturing pump includes a power end with a plurality of torsion tubes extending between sides of a crankcase housing in which a crankshaft is rotatably mounted. The crankshaft is coupled by piston arms to crossheads disposed to reciprocate along crosshead axes that are perpendicular to the crankshaft. Disposed within the crankcase housing are a plurality of ribs generally perpendicular to the crankshaft and extending from the base of the crankshaft housing to an upper surface of the crankshaft housing. The torsion tubes are generally adjacent the upper surface of the crankcase housing and pass perpendicularly through each of the plurality of ribs and are attached to the ribs to provide rigidity to the power end.

Abstract: An electric drive pump system includes a power end and a detachable transmission assembly. The transmission assembly is mounted to the power end and is configured to provide rotational power to the power end through a plurality of electric motors. The plurality of electric motors use a gearbox to drive an output spline that engages the power end. A control module is used to regulate the performance characteristics of the plurality of electric motors. A temperature regulation assembly is configured to regulate the temperature of the transmission assembly and the power end.

Abstract: An electric drive pump system includes a power end and a detachable transmission assembly. The transmission assembly is mounted to the power end and is configured to provide rotational power to the power end through a plurality of electric motors. The plurality of electric motors use a gearbox to drive an output spline that engages the power end. A control module is used to regulate the performance characteristics of the plurality of electric motors. A temperature regulation assembly is configured to regulate the temperature of the transmission assembly and the power end.

Abstract: A packing carton for pump valves includes a base, a first set of opposing sides extending up from the base, and a second set of opposing sides extending up from the base, such that adjacent sides join together to form a corner. The packing carton further includes a first circular corner receptacle formed at a first corner, a second circular corner receptacle formed at a second corner and adjacent the first receptacle, a third circular corner receptacle formed at a third corner, and a fourth circular corner receptacle formed at a fourth corner and adjacent the third receptacle.

Abstract: An electric drive hydraulic fracturing pump system includes one or more electric motors, with each electric motor electrically coupled to a dedicated dual inverter to control operation of the motor. A plurality of electric motors may be coupled to each end of a pump crankshaft and configured to provide rotational power to the power end of a hydraulic fracturing pump through a planetary gearset coupled to each end of the crankshaft. A hydraulic cooling circuit having a first and second cooling systems may be used to regulate the temperature of the electric motors and dual inverters.

Abstract: An electric drive pump system includes a power end and a detachable transmission assembly. The transmission assembly is mounted to the power end and is configured to provide rotational power to the power end through a plurality of electric motors. The plurality of electric motors use a gearbox to drive an output spline that engages the power end. A control module is used to regulate the performance characteristics of the plurality of electric motors. A temperature regulation assembly is configured to regulate the temperature of the transmission assembly and the power end.

Abstract: An electric drive hydraulic fracturing pump system includes one or more electric motors, with each electric motor electrically coupled to a dedicated dual inverter to control operation of the motor. A plurality of electric motors may be coupled to each end of a pump crankshaft and configured to provide rotational power to the power end of a hydraulic fracturing pump through a planetary gearset coupled to each end of the crankshaft. A hydraulic cooling circuit having a first and second cooling systems may be used to regulate the temperature of the electric motors and dual inverters.

Abstract: A hydraulic fracturing pump includes a pinion assembly extending along a pinion axis and mounted in a crankcase, and having a first pinion shaft and a second pinion shaft coupled together by a keyless coupler. Each pinion shaft includes an input pinion gear mounted on one end of the pinion shaft. A crankshaft disposed along a crankshaft axis is mounted in the crankcase, and is parallel with but spaced apart from the pinion axis. The crankshaft includes a bull gear mounted on each end of the crankshaft with each bull gear interconnected to an input pinion gear by an intermediate gear assembly. Each intermediate gear assembly extends along an intermediate axis parallel with, but spaced apart from, the crankcase and pinion axii. Each intermediate assembly has an intermediate shaft with a first intermediate gear meshed with a pinion gear and a second intermediate gear meshed with the bull gear.

Abstract: A valve head assembly for a hydraulic fracturing pump. The valve head assembly includes a valve body attached to a valve leg assembly with backward swept or delta shaped legs. Each leg is attached to a main leg shaft which extends along a main axis. Each leg has a first leg segment and a second leg segment. The first leg segment has a first end that attaches to a distal end of the main leg shaft and extends along a first leg segment axis back towards the valve body. The second end of the first leg segment attaches to the second leg segment which extends along a second leg segment axis that is substantially parallel with but spaced apart from the main axis. The first leg segment may form an angle between the main axis and the first leg segment axis that is between approximately 10 and 60 degrees.

Abstract: A hydraulic fracturing pump includes a power end with a plurality of torsion tubes extending between sides of a crankcase housing in which a crankshaft is rotatably mounted. The crankshaft is coupled by piston arms to crossheads disposed to reciprocate along crosshead axes that are perpendicular to the crankshaft. Disposed within the crankcase housing are a plurality of ribs generally perpendicular to the crankshaft and extending from the base of the crankshaft housing to an upper surface of the crankshaft housing. The torsion tubes are generally adjacent the upper surface of the crankcase housing and pass perpendicularly through each of the plurality of ribs and are attached to the ribs to provide rigidity to the power end.

Abstract: A lubricating sealing system for a fluid end includes a fluid end, a sleeve, a plunger, and a lubrication system. The sleeve is coupled to an internal surface of the fluid end. The plunger reciprocates in a linear manner through the sleeve and into a pressure chamber of the fluid end. The lubrication system is in communication with the plunger and configured to provide lubricant through an interior of the plunger for routing to surfaces between the plunger and the sleeve. The lubricant is pressurized and moved via the reciprocating of the plunger and create a positive pressure on the lubricant over the pressures experienced in the pressure chamber of the fluid end. The positive pressure creates a barrier and pushes away contaminants from the plunger seals thereby avoiding wash out.

Abstract: A sealed nut assembly includes a nut portion and a plug portion integrally formed together as a single unit. The nut assembly is configured to seal a bore hole in a fluid end and prevent leakage of working fluid therein. The assembly includes a nut portion and a plug portion. The nut portion and plug portion are inserted and removed together. The nut portion engages the fluid end prior to the setting of the plug portion. A seal groove is included in the plug portion to locate one or more seals. The contact surface between the nut assembly and the fluid end is tapered.

Abstract: A frac pump valve seat assembly includes a seat body and a wiper seal. The seat assembly is configured to mitigate the risk of fluid end erosion in the valve seating area by automatically clearing or wiping the mating surface of the fluid end at the time of installation. The wiper seal is located at a lower portion of the seat body and is designed to interface therewith the mating surface of the fluid end. Upon installation, the wiper seal scrapes or cleans the mating surface of propellants, sand, and other contaminants that may remain after initial cleaning. The contact surface of the seat body is optionally further reinforced with material implants with greater hardness than the material of the seat body.

Abstract: A valve assembly includes a valve body, a seal, and a supplemental material. The valve assembly configured to reduce the effects of wear and erosion of the seal and valve body by including material with increased hardness. The supplemental material has a higher hardness level than the valve body and is inserted on the contact surface of the valve body. The seal can include a plurality of materials, each having different hardness levels. The location of the supplemental material can vary and the overall radial distribution on the contact surface may vary.

Abstract: A lubricating sealing system for a fluid end includes a fluid end, a sleeve, a plunger, and a lubrication system. The sleeve is coupled to an internal surface of the fluid end. The plunger reciprocates in a linear manner through the sleeve and into a pressure chamber of the fluid end. The lubrication system is in communication with the plunger and configured to provide lubricant through an interior of the plunger for routing to surfaces between the plunger and the sleeve. The lubricant is pressurized and moved via the reciprocating of the plunger and create a positive pressure on the lubricant over the pressures experienced in the pressure chamber of the fluid end. The positive pressure creates a barrier and pushes away contaminants from the plunger seals thereby avoiding wash out.