S.p.m. Flow Control, Inc.

Spm Oil & Gas Inc.

Brian C Witkowski

Nuder M Said

Nadiya V Fuller

Duc Thanh Tran

Matthew S Baca

Peter Walter

Mark D Matzner

Edward Charles Kotapish

Bunhap Sam

Jacob A Bayyouk

Scott Hunter

Ben Ward

Matt Treida

In some implementations, a clapper valve assembly includes a valve body defining a longitudinal flow bore, a hanger disposed in the valve body, a link piece coupled to the hanger, a first pin coupled between the hanger and the link piece, wherein the link piece is configured to rotate, relative to the hanger, about the first pin, a clapper coupled to the link piece, and a second pin coupled between the link piece and the clapper, wherein the clapper is configured to rotate, relative to the link piece, about the second pin.

Two-pin clapper check valve

In some implementations, a check valve may include a hanger configured in a valve body in a position that is approximately parallel to a direction of flow, wherein the hanger includes a first mating surface on a bottom face of the hanger. The check valve may include a clapper rotatably connected to the hanger, wherein the clapper is configured to rotate between a closed position and an open position, wherein the clapper includes a second mating surface on a top face of the clapper, and wherein the first mating surface and the second mating surface are configured to form a mated interface when the clapper is in the open position.

Stabilized check valve

A swivel assembly for oilfield operations, the swivel assembly including a first pipe section having a first end fitting and a second pipe section having a second end fitting corresponding to and receiving the first end fitting, each of the first and second end fittings having an inner surface and an outer surface. The swivel assembly further includes a swivel joint rotatably securing, via the corresponding first and second end fittings, the first and second pipe sections together along a central axis to define a fluid passageway therethrough. At least a portion of one of the first pipe section and the second pipe section is formed of a corrosion-resistant material having a first hardness and at least a portion of the swivel joint is formed having a second hardness different from the first hardness.

Swivel assembly formed of a corrosion-resistant material

A plug valve including a valve body defining an internal cavity, a first passage, and a second passage, a plug defining a third passage and being rotatable within the internal cavity, and an insert extending within the internal cavity between the valve body and the plug. The insert defines an interior surface and an opening aligned with the first passage of the valve body. The insert may also define a sealing surface extending around the opening and standing in relief against the interior surface to sealingly engage the plug. In addition to, or instead of, the sealing surface, the insert may define a projection at least partially defining the interior surface. In addition, a boot may be connected to the valve body and interlocked with the projection to prevent, or at least reduce, rotation of the insert relative to the valve body when the plug rotates within the internal cavity.

Large bore plug valve

According to one aspect, a hammer union includes a female sub; a male sub; and a wing nut that is concentrically disposed about the female and male subs. The wing nut includes a body having first and second end surfaces, and an exterior surface extending therebetween; a passage extending through the body from the first to second end surface that defines an interior surface of the body; an internal shoulder formed by the interior surface; an internal threaded connection that extends from the first end surface and towards the internal shoulder; and lugs extending radially from the exterior surface. In one aspect, the body has a wall thickness defined between the interior and exterior surfaces, with a greater wall thickness at the internal shoulder than at the first end surface; the internal threaded connection has a full-root radius; and a lug that extends along the axial length of the body.

Full-root-radius-threaded wing nut having increased wall thickness

A valve assembly includes a valve body that defines an internal flow passageway between an inlet and an outlet, and a valve seat disposed in the valve body with a sealing surface perpendicular to the flow passageway. The valve assembly further includes a clapper pivotally correlated to the valve seat having a closed configuration extending across the valve seat configured to substantially close off the flow passageway, and an open configuration configured to substantially allow fluid flow in the flow passageway from the inlet to the outlet through the valve body. An annular valve seat seal is disposed within an annular groove formed in a surface of the valve seat, where the annular valve seat seal is disposed at an interface between the valve seat and the clapper when the clapper is in the closed configuration.

Clapper check valve with a valve seat seal member

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.

Hydraulic fracturing system, apparatus, and method

A valve assembly adapted for use in oil and gas operations. In one aspect, the valve assembly includes a valve body defining an internal region, an inlet passageway, and an outlet passageway, the inlet and outlet passageways extending into the internal region; a valve seat connected to the valve body and defining a fluid passageway; a clapper extending within the internal region and defining an annular groove; and a seal extending within the annular groove of the clapper and adapted to sealingly engage the valve seat. In an example embodiment, the clapper is actuable between an open configuration, in which fluid flow is permitted through the fluid passageway; and a closed configuration, in which the seal sealingly engages the valve seat to at least partially restrict fluid flow through the fluid passageway.

Clapper valve

A high pressure swivel comprises a first tube; a second tube; and a plurality of balls contained between a plurality of bearing races and a plurality of complimentary bearing races, wherein the first tube and the second tube comprise a carburizing grade micro-alloy steel, wherein the carburizing grade micro-alloy steel comprises a yield strength of greater than about 110,000 psi, a tensile strength of greater than about 130,000 psi, an elongation of greater than about 14%, a reduction area of greater than about 45%, and a longitudinal Charpy v-notch of greater than about 31 ft/lbs longitudinal at about &#x2212;40&#xb0; C., and a nickel concentration of less than about 1 wt. %, by weight of the carburizing grade micro-alloy steel, and a carbon content of less than about 0.15 wt. %, by weight of the carburizing grade micro-alloy steel.

Carburizing grade micro-alloy high pressure swivel joints

A hammer union includes a female sub; a male sub; and a wing nut that is concentrically disposed about the female and male subs. The wing nut includes a body having first and second end surfaces, and an exterior surface extending therebetween; a passage extending through the body from the first to second end surface that defines an interior surface of the body; an internal shoulder formed by the interior surface; an internal threaded connection that extends from the first end surface and towards the internal shoulder; and lugs extending radially from the exterior surface. The body has a wall thickness defined between the interior and exterior surfaces, with a greater wall thickness at the internal shoulder than at the first end surface; the internal threaded connection has a full-root radius; and a lug that extends along the axial length of the body.

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Weatherford, TX, United States of America

Brian C Witkowski