A pump fluid end having a reciprocating element a discharge valve assembly, a suction valve assembly, and a suction valve stops. The reciprocating element is disposed at least partially within a reciprocating element bore of the pump fluid end. The suction valve assembly is coupled with a front end of the reciprocating element. The suction valve stop is positioned within the reciprocating element bore such that the suction valve stop contacts and applies a closing force to the suction valve assembly when the suction valve assembly is stuck open at the end of a discharge stroke of the reciprocating element.

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.

Systems and methods for monitoring, detecting, and/or intervening with respect to cavitation and pulsation events during hydraulic fracturing operations may include a supervisory controller. The supervisory controller may be configured to receive pump signals indicative of one or more of pump discharge pressure, pump suction pressure, pump speed, or pump vibration associated with operation of the hydraulic fracturing pump. The supervisory controller also may be configured to receive blender signals indicative of one or more of blender flow rate or blender discharge pressure. Based on one or more of these signals, the supervisory controller may be configured to detect a cavitation event and/or a pulsation event. The supervisory controller may be configured to generate a cavitation notification signal indicative of detection of cavitation associated with operation of the hydraulic fracturing pump, and/or a pulsation notification signal indicative of detection of pulsation associated with operation of the hydraulic fracturing pump.

The invention relates to pressure transfer device, system comprising the pressure transfer device, a fleet comprising the system and use of a pressure transfer device for pumping fluid at pressures above 500 bars, the pressure transfer device (1′, 1″) comprising a pressure chamber housing (1′, 1″) and at least one connection port (3′, 3″), the at least one connection port (3′, 3″) being connectable to a dual acting pressure boosting liquid partition device (2) via fluid communication means (26′, 27′; 26″, 27″), the pressure chamber housing comprises: - a pressure cavity (4′, 4″) inside the pressure chamber housing, and at least a first port (5′, 5″) for inlet and/or outlet of fluid to the pressure cavity (4′, 4″), - a bellows (6′, 6″) defining an inner volume (7′, 7″) inside the pressure cavity (4′, 4″), and wherein the inner volume (7′, 7″) is in fluid communication with the connection port (3′, 3″), wherein the pressure cavity (4′, 4″) has a center axis (C′, C″) with an axial length (L) defined by the distance between the connection port (3′, 3″) and the first port (5′, 5″) and a varying cross sectional area over at least a part of the axial length (L), and wherein the bellows (6′, 6″) is configured to move in a direction substantially parallel with the center axis (C′, C″) over a part of the axial length (L) of the pressure cavity (4′, 4″).

The invention relates to pressure transfer device, system comprising the pressure transfer device, a fleet comprising the system and use of a pressure transfer device for pumping fluid at pressures above 500 bars, the pressure transfer device (1′, 1″) comprising a pressure chamber housing (1′, 1″) and at least one connection port (3′, 3″), the at least one connection port (3′, 3″) being connectable to a dual acting pressure boosting liquid partition device (2) via fluid communication means (26′, 27′; 26″, 27″), the pressure chamber housing comprises: - a pressure cavity (4′, 4″) inside the pressure chamber housing, and at least a first port (5′, 5″) for inlet and/or outlet of fluid to the pressure cavity (4′, 4″), - a bellows (6′, 6″) defining an inner volume (7′, 7″) inside the pressure cavity (4′, 4″), and wherein the inner volume (7′, 7″) is in fluid communication with the connection port (3′, 3″), wherein the pressure cavity (4′, 4″) has a center axis (C′, C″) with an axial length (L) defined by the distance between the connection port (3′, 3″) and the first port (5′, 5″) and a varying cross sectional area over at least a part of the axial length (L), and wherein the bellows (6′, 6″) is configured to move in a direction substantially parallel with the center axis (C′, C″) over a part of the axial length (L) of the pressure cavity (4′, 4″).

Apparatus and methods for measuring backlash of a gear train of a pump unit for pumping a fluid. An example method may include locking a crankshaft of the pump unit such that the crankshaft cannot rotate. The method may further include commencing operation of a processing device to receive rotational position measurements indicative of rotational position of an output shaft of a prime mover, cause the prime mover to rotate the output shaft in a first direction until the output shaft reaches a first rotational position, and cause the prime mover to rotate the output shaft in a second direction until the output shaft reaches a second rotational position. The processing device may then determine backlash of the gear train by determining rotational distance between the first rotational position of the output shaft and the second rotational position of the output shaft.

A mobile pump unit including a mobile trailer having mounted thereon one or more pumps, an internal combustion engine(s) to power the one or more pumps, and a heat exchanger assembly for cooling a fluid for the engine, transmission, hydraulic driven components, or pressure pump. The heat exchanger assembly includes a heat exchanger with an air inlet. The air inlet faces the engine and is for receiving air. In addition to the air inlet, the heat exchanger has a fluid inlet for receiving the fluid; a heat exchange surface for transferring heat from the fluid to the air; an air outlet for discharging the air; and a fluid outlet for delivering the fluid to the engine. The heat exchanger assembly also includes an air circulation device for moving the air through the heat exchanger, and an air intake duct that directs the air into the air inlet of the heat exchanger. The air intake duct is configured to resist heated air produced by the engine from entering the air inlet.

A reciprocating rod pump apparatus includes a pump barrel having an inner bore; a plunger comprising a plurality of plunger segments, disposed within the pump barrel; and an articulating connector disposed between and connecting plunger segments, adapted to allow for deflection between plunger segments.

An apparatus according to which a subterranean formation in which a wellbore extends is hydraulically fractured, the apparatus comprising first and second manifolds, the first manifold including first and second flow lines adapted to be in fluid communication with first and second pumps, respectively, the first pump being adapted to pressurize fluid received from the first flow line, and the second pump being adapted to pressurize fluid received from the second flow line, and the second manifold including a third flow line adapted to convey pressurized fluid from the first and second pumps to the wellbore to hydraulically fracture the subterranean formation in which the wellbore extends. The apparatus is adapted to be connected to another apparatus used to hydraulically fracture the subterranean formation in which the wellbore extends by moving one, or both, of the first and second flow lines relative to the third flow line.

An apparatus according to which a subterranean formation in which a wellbore extends is hydraulically fractured, the apparatus comprising first and second manifolds, the first manifold including first and second flow lines adapted to be in fluid communication with first and second pumps, respectively, the first pump being adapted to pressurize fluid received from the first flow line, and the second pump being adapted to pressurize fluid received from the second flow line, and the second manifold including a third flow line adapted to convey pressurized fluid from the first and second pumps to the wellbore to hydraulically fracture the subterranean formation in which the wellbore extends. The apparatus is adapted to be connected to another apparatus used to hydraulically fracture the subterranean formation in which the wellbore extends by moving one, or both, of the first and second flow lines relative to the third flow line.