Abstract: A tubing hanger retention system for a wellhead assembly can include a retention ring that is configured to fit over a top portion of a tubing hanger of the wellhead assembly, where the retention ring comprises a plurality of retention ring channels. The tubing hanger retention system can also include multiple retention pin receiving features configured to be disposed, at least in part, within multiple tubing spool channels of a tubing spool. The tubing hanger retention system can further include multiple retention pins configured to be received by the retention pin receiving features, where each retention pin includes an engagement feature configured to be received by a retention pin receiving feature to place the retention pin in a captured state, where the engagement feature of each retention pin is further configured to enter into an engaged state with a retention ring channel when the retention pin is moved inward.

Abstract: A fitting allowing a quick connection and disconnection of liquid color conduits includes a quick disconnect plate assembly having three plates layered on top of each other, the top plate including guides sized to receive projections extending off structure to which the fitting is to be connected, with the middle plate including stops engaging with the same projections upon rotation of the structure.

Abstract: A conductor pipe connector assembly for coupling a pressure containing component to a conductor pipe of a subterranean well includes an annular slip bowl circumscribing the conductor pipe. An annular slip segment is located between the slip bowl and the conductor pipe. A slip actuation ring is located between the slip bowl and the slip segment, the slip actuation ring having a beveled surface in sliding contact with one of the slip bowl and the slip segment. An elongate annular piston member circumscribes the conductor pipe and is coupled to the slip action ring, the piston member is movable by a pressure medium, such as hydraulic fluid or pressurized gas, to an engaged position to urge the slip segment radially inward against the conductor pipe.

Abstract: A dual drill pipe joint includes a pin end and a box end. An inner pipe is disposed within an internal bore of the joint of drill pipe. A retainer is disposed proximate each longitudinal end of the inner pipe. A retaining feature is formed in an interior of the joint of drill pipe proximate each longitudinal end. The features are configured to engage a respective one of the retainers so that the inner pipe is held in longitudinally fixed relation to the joint of drill pipe.

Abstract: A toothed pipe gripping die insert has textured surfaces on the die surface opposite the pipe gripping teeth to reduce the insert-to-insert carrier contact surface area to increase unit loading such that selected loads forcing the die insert against its carrier impresses the textured pattern into the carrier surface to reduce the tendency for the die insert to slide on the die carrier surface.

Abstract: The present invention relates to a PVC-pipe, axially-tensioned joint. The pipe joint comprises a first PVC pipe having a spigot end, wherein the spigot end has a circumferential groove in and circumferentially around the outer surface of the spigot end. An inner ring is fitted into the groove in the spigot end and has a radial edge which forms a substantially radial shoulder circumferentially around the inner ring. The pipe joint also comprises a second PVC pipe having a bell end, wherein a plurality of angularly-spaced-apart holes extend radially through the bell end. The bell end of the second PVC pipe is fitted onto the spigot end of the first PVC pipe. There is a set of radial fasteners, wherein each given one of the radial fasteners extends through one of the plurality of angularly-spaced-apart holes in the bell end such that a first end portion of the fastener abuts against a shoulder of the inner ring.

Abstract: A connector for the connection of pressure vessels utilizing toroidal surfaces to achieve a maximum of contact area sliding parallel to motion of locking segment when achieving high preload to minimize high stress contact points and the resultant wear when subjected to multiple operations and orientation means to cause any wear to be repeatedly in the same area such that selected critical areas will not be subjected to high contact stress wear.

Abstract: A connector for connecting a first tubular member to a second tubular member is disclosed, for example for connecting a riser to a wellhead in a subsea oilfield location. The second tubular member has a seating surface and comprises an engagable locking profile. The connector comprises a housing for securing the connector to the end portion of the first tubular member, the housing comprising a seating surface for contacting the seating surface of the second tubular member.

Abstract: A connector for connecting two tubular members has a pin and a box, the box having a bore that receives the pin in stabbing engagement. The bore having a grooved profile, and a split lock ring mounted to the pin, the lock ring snapping into engagement with the grooved profile in the box when the box and pin are stabbed together to lock the tubular members together. An annular wedge shoulder is located on the pin axially spaced apart and facing a rim on the box. The wedge shoulder and rim are inclined relative to each other, resulting in a closer axial distance between them at outer diameters of the pin and box than farther inward. An annular recess is located on the pin at an inner portion of the wedge shoulder, the recess having an inner wall facing outwardly.

Abstract: A quick connector fitting assembly is provided which includes a fitting which releasably connects to a well casing for providing an interface for the attachment of various types of well related equipment.

Abstract: A dog-style connector with a fail-safe mechanism for a marine riser system that connects a box portion and a pin portion of a riser. An actuator housing is affixed to an external surface of the box portion. The actuator housing has an outer bore and a threaded inner bore. An actuator body is threadably received in the inner bore. The actuator body has a hex head on its first end. The actuator body has a threaded fastener bore extending from the first end for receiving a threaded fastener. The actuator body has a second end that has a stem receptacle formed therein. The fastener bore is in communication with the stem receptacle. An actuator head, which includes a flange and a stem, is provided wherein the stem is positioned within the stem receptacle for sliding engagement therewith. Threads formed on the threaded fastener engage a threaded fastener receptacle formed in the stem of the actuator head.