Abstract: An outer casing string, including a surface casing head, and associated installation method. In some embodiments, the surface casing head includes an outer tubular member insertable through a diverter of an installed conductor system, an inner tubular member at least partially disposed within and moveable relative to the outer tubular member, and a sleeve ring rotatably coupled to the inner tubular. The outer tubular member has an annular recess. The sleeve ring includes a snap ring that is displaceable between an extended position and a retracted position. In the extended position, at least a portion of the snap ring is received within the annular recess, and the outer tubular member is axially immovable relative to the inner tubular member. In the retracted position, no portion of the snap ring is received within the annular recess, and the outer tubular member is axially moveable relative to the inner tubular member.

Abstract: Various tools for locking components in place within a wellhead housing are provided. In one embodiment, a system includes a lockdown tool (32) having an inner body (40), an outer body (42) coupled to the inner body, and a locking mechanism (44) carried by the inner body. The locking mechanism can be selectively engaged by moving the outer body with respect to the inner body to secure the lockdown tool to the wellhead housing (60). Additional systems, devices, and methods are also disclosed.

Abstract: Various tools for installing components in a wellhead housing are provided. In one embodiment, an apparatus includes a wellhead hanger running tool. The running tool includes a piston and a locking segment both disposed in a body of the running tool. The piston and the locking segment are positioned with respect to one another so as to allow the locking segment to be selectively driven by the piston to secure the running tool to a wellhead hanger received by the running tool. Additional systems, devices, and methods are also disclosed.

Abstract: A hanger running tool for a hanger includes an outer sleeve and an inner driving sleeve. The outer sleeve is configured to engage and couple the hanger running tool to the hanger, and the inner driving sleeve is selectively axially movable within the outer sleeve for engagement with the hanger to prevent relative rotation between the hanger running tool and the hanger.

Abstract: An outer casing string, including a surface casing head, and associated installation method. In some embodiments, the surface casing head includes an outer tubular member insertable through a diverter of an installed conductor system, an inner tubular member at least partially disposed within and moveable relative to the outer tubular member, and a sleeve ring rotatably coupled to the inner tubular. The outer tubular member has an annular recess. The sleeve ring includes a snap ring that is displaceable between an extended position and a retracted position. In the extended position, at least a portion of the snap ring is received within the annular recess, and the outer tubular member is axially immovable relative to the inner tubular member. In the retracted position, no portion of the snap ring is received within the annular recess, and the outer tubular member is axially moveable relative to the inner tubular member.

Abstract: An outer casing string, including a surface casing head, and associated installation method. In some embodiments, the surface casing head includes an outer tubular member insertable through a diverter of an installed conductor system, an inner tubular member at least partially disposed within and moveable relative to the outer tubular member, and a sleeve ring rotatably coupled to the inner tubular. The outer tubular member has an annular recess. The sleeve ring includes a snap ring that is displaceable between an extended position and a retracted position. In the extended position, at least a portion of the snap ring is received within the annular recess, and the outer tubular member is axially immovable relative to the inner tubular member. In the retracted position, no portion of the snap ring is received within the annular recess, and the outer tubular member is axially moveable relative to the inner tubular member.

Abstract: Various tools for locking components in place within a wellhead housing are provided. In one embodiment, a system includes a lockdown tool having an inner body, an outer body coupled to the inner body, and a locking mechanism carried by the inner body. The locking mechanism can be selectively engaged by moving the outer body with respect to the inner body to secure the lockdown tool to the wellhead housing. Additional systems, devices, and methods are also disclosed.

Abstract: Various tools for locking components in place within a wellhead housing are provided. In one embodiment, a system includes a lockdown tool (32) having an inner body (40), an outer body (42) coupled to the inner body, and a locking mechanism (44) carried by the inner body. The locking mechanism can be selectively engaged by moving the outer body with respect to the inner body to secure the lockdown tool to the wellhead housing (60). Additional systems, devices, and methods are also disclosed.

Abstract: Various tools for installing components in a wellhead housing are provided. In one embodiment, an apparatus includes a wellhead hanger running tool. The running tool includes a piston and a locking segment both disposed in a body of the running tool. The piston and the locking segment are positioned with respect to one another so as to allow the locking segment to be selectively driven by the piston to secure the running tool to a wellhead hanger received by the running tool. Additional systems, devices, and methods are also disclosed.

Abstract: A hanger running tool for a hanger includes an outer sleeve and an inner driving sleeve. The outer sleeve is configured to engage and couple the hanger running tool to the hanger, and the inner driving sleeve is selectively axially movable within the outer sleeve for engagement with the hanger to prevent relative rotation between the hanger running tool and the hanger.

Abstract: Various tools for locking components in place within a wellhead housing are provided. In one embodiment, a system includes a lockdown tool having an inner body, an outer body coupled to the inner body, and a locking mechanism carried by the inner body. The locking mechanism can be selectively engaged by moving the outer body with respect to the inner body to secure the lockdown tool to the wellhead housing. Additional systems, devices, and methods are also disclosed.

Abstract: A running tool (10) for inserting and setting an assembly into a bore in a well, the tool comprising a main body (11) having a hydraulic cylinder (12) for actuating one or more locking elements (60, 61) on the main body for, in use, reaction with the bore, an outer sleeve (40) rotatably mounted on the main body, a rotatable mandrel (13) to which, in use, torque is applied and means (42, 43, 44) for transmitting the torque from the mandrel to the outer sleeve.

Abstract: A tool (10) for installing and removing a valve removal plug (60) from wellhead components, the tool comprising a curved pressure containing housing (11) having a first and a second end (12, 13), the housing having a bore (20) extending from the first end to the second end, a flexible drive member (21) within the bore and drive means (40, 41) connected to the drive member for causing rotational movement of the drive member within the pressure containing housing.

Abstract: A tool (10) for installing and removing a valve removal plug (60) from wellhead components, the tool comprising a curved pressure containing housing (11) having a S first and a second end (12, 13), the housing having a bore (20) extending from the first end to the second end, a flexible drive member (21) within the bore and drive means (40, 41) connected to the drive member for causing rotational movement of the drive member within the pressure containing housing.

Abstract: A running tool (10) for inserting and setting an assembly into a bore in a well, the tool comprising a main body (11) having a hydraulic cylinder (12) for actuating one or more locking elements (60, 61) on the main body for, in use, reaction with the bore, an outer sleeve (40) rotatably mounted on the main body, a rotatable mandrel (13) to which, in use, torque is applied and means (42, 43, 44) for transmitting the torque from the mandrel to the outer sleeve.

Abstract: An outer casing string, including a surface casing head, and associated installation method. In some embodiments, the surface casing head includes an outer tubular member insertable through a diverter of an installed conductor system, an inner tubular member at least partially disposed within and moveable relative to the outer tubular member, and a sleeve ring rotatably coupled to the inner tubular. The outer tubular member has an annular recess. The sleeve ring includes a snap ring that is displaceable between an extended position and a retracted position. In the extended position, at least a portion of the snap ring is received within the annular recess, and the outer tubular member is axially immovable relative to the inner tubular member. In the retracted position, no portion of the snap ring is received within the annular recess, and the outer tubular member is axially moveable relative to the inner tubular member.

Abstract: A tubing hanger (2) is suspended in a spool (1) by a composite load support ring (7,8). Upon running-in, the hanger expands the ring into engagement with complementary grooves (34) in the spool wall. By making the load support ring from individual split rings (7,8), a radially large bearing area is provided for supporting the hanger and/or a seal, whilst enabling an appreciable expansion of the ring without it yielding beyond its elastic limit.

Abstract: A sealing arrangement in which a sealing member 25 seals against an annular sealing surface 20. The sealing member 25 has an annular sealing surface 29 the axis of which is offset relative to the rotational axis of the surface 20. Thus when the annular surface 20 rotates the area swept out by the sealing member surface is larger than the area of its sealing surface. The arrangement has application to seals for gate valve stems.

Abstract: The invention relates to a compact valve removal tool with a fixed crosshead (18) to be mounted on a pipeline end, such as a wellhead spool outlet (3), and a moving crosshead (19) which is axially slidable, the fixed crosshead accommodating an axially slidable and rotatable rod (16) and gripping means (50) for holding the rod, and the moving crosshead having drive means (23, 24) for advancing and retracting it to enable rod extension pieces (17) to be fitted or removed, the fixed crosshead also having safety stops (58) movable into the line behind the rod or behind a rod extension to block the path of the rod if the griping means failed. Preferably, the moving crosshead (10) cooperates with further safety means (60-72) to prevent operation of the gripping means except in predetermined, safe positions. The tool could be useful for operations other than plug insertion, such as milling a valve gate.