Abstract: Bridge plug and setting assembly may be used in a well with a tubular therein to control flow through the tubular. A plurality of fluid powered units 16, 24 are suspended in a well from a work string 14 for exerting a driving force. A plug member 50 is suspended below the plurality of fluid powered units. The plug member 50 is axially movable relative to an expansion sleeve 40 in response to the driving force to radially expand the sleeve 40 into sealing engagement with both the plug member 50 and the tubular 12. A release mechanism 68 is provided for releasing the one or more fluid powered units from the plug member and the expansion sleeve once set in the well.

Abstract: A subsea riser disconnect assembly 10 may be actuated from a drilling rig DR by axial movement of an upper riser 35 relative to a lower riser 28, for disconnecting the upper riser 35 from the lower riser 28. A subsea riser valve assembly 20 may be actuated from the drilling rig DR by axial movement of the upper riser 35 relative to the lower riser 28, for sealing an interior portion of the lower riser 28 and well bore WB below the subsea riser valve assembly 20. A drill pipe disconnect 30 may be actuated from a drilling rig DR, either onshore or offshore, for disconnecting an upper portion of drill pipe 236 from a lower portion of drill pipe 240. The drill pipe disconnect 30 may be actuatable by hydraulic and/or mechanical forces applied to the drill pipe disconnect 30 from the drilling rig DR. The drill pipe disconnect 30 may be compatible for use with or without the subsea riser disconnect assembly 10 and/or the subsea riser valve assembly 20.

Abstract: A whipstock assembly includes a tubular anchor 36 which is expanded into engagement with the casing string 8, and a tubular expander 24 which is forcibly moved into the tubular anchor to expand the tubular anchor downhole into secure engagement with the casing string. The tubular anchor and tubular expander remain downhole. An orientation sleeve 18 at the upper end of the expander 24 includes an orientation surface 20. A whipstock 70 engages the sleeve 18 to orient the whipstock face for diverting a tool into a hole in the side of the casing string. Once the whipstock 70 is removed from the well, the orientation sleeve may receive a sealing nipple 130 at the lower end of a production tubing string.

Abstract: A liner hanger assembly seals with casing 22 and supports a liner 90 within a well. The tubular liner hanger body 50 and a tubular expander 40 may be positioned downhole at a desired depth on a running tool. An actuator assembly 12, 24 may forcibly move the tubular expander 40 into the liner hanger body 50, expanding the liner hanger body to seal and secure the hanger body to the casing string 22. The running tool may be released from the set liner hanger by an axially movable collet mechanism, such as ratchet ring 92 and a catch mechanism, such as threads 94. The running string thus need not be rotated to release from the set liner hanger.

Abstract: The liner hanger assembly seals with casing 8 and supports a liner 98 within a well. The tubular liner hanger 48 and a tubular expander 40 may be position downhole on a running tool at a desired depth along the casing string 8. An actuator assembly 6 may forcably move the tubular expander 40 into the tubular hanger, expanding the liner hanger to seal and secure the hanger against the casing string 8. After the running tool has been removed, a seal nipple may be sealed to the sealing sleeve of the tubular expander. A selectively releasable clutch 73 is provided for allowing rotation of the liner to rotate the liner with the running tool, and thereafter to disengage and release the running tool from the set liner hanger.