Abstract: A setting tool and a liner hanger for setting a liner hanger in well bores traversing earth formations where the setting tool can be hydraulically operated and released from the liner hanger or alternatively, can be mechanically operated and released from a liner hanger. The tool is provided with bypass areas in the liner hanger and locates the tieback sleeve below the liner hanger. The setting tool incorporates most of the expensive setting mechanism in the setting tool and is not a part of the liner hanger. Thus, the setting mechanism is therefore removable from the wellbore and can be reused on other liner hangers.

Abstract: A liner hanger system for wellbores where the liner hanger includes a polished bore receptacle (PBR) with a releasable latching device. In use, a string of tubing with a sealing assembly adapted for cooperation with the PBR can be releasably latched to the PBR to limit upward travel of the string of tubing relative to the PBR.

Abstract: A liner hanger for use in an oil well completion comprising a hanger assembly which can be passed through a tubular pipe and has a continuous bypass and a shaped area for passing through fluid and cuttings in the pipe. The hanger assembly has an inclined cam surface which is spirally disposed along the length of a hanger body. A one-piece, heat treated, slip device comprised of strip of metal having an internal spiral and inclined cam surface is disposed up on the spiral cam surface on the hanger body. The spiral space around the hanger body provides a shaped bypass area. The spiral slip device is attached to setting means. Upon release of the setting means, relative movement between the slip device and the cam surface on the hanger body permits the slip device to be positioned in setting engagement with the inner wall of a tubular pipe.

Abstract: Apparatus and method of positioning and seating a retrievable landing assembly within a packer bore receptacle in a well bore. Latching measure provided for releasably securing a landing assembly in the packer bore receptacle. The latching means which are normally in a retracted position are actuated by hydraulic pressure means to lock the landing assembly within the packer bore receptacle. The retrievable landing assembly can be retrieved with a spear mechanism by shearing a release mechanism. The retrievable landing assembly is hydraulically set and mechanically retrieved.

Abstract: The present invention relates to a method and apparatus for providing a sliding seal at the upper end of a polished bore receptacle in a wellbore to permit reciprocation of tubing string and to prevent the accumulation of debris in an annulus between a tubing string and a polished bore receptacle. In particular, a slideable and releasable connection is provided on a tubing string to releasably inner-connect with the upper end of a tubular bore in a wellbore and permit a sliding and sealing relationship there between.

Abstract: Apparatus and method of positioning and seating a retrievable insert landing assembly within a packer bore receptacle in a well bore. Means are provided for releasably securing a landing assembly in the packer bore receptacle by engaging an annular groove in the PBR with latching elements on the landing assembly. The latching elements are normally in a retracted position and are actuated by hydraulic pressure. The landing assembly has an internal polished bore which slidably and sealingly receives a tubular extension attached to a releasable coupling. The releasable coupling is disconnectable from the landing assembly after it is latched in place. To retrieve the landing assembly a spear mechanism is run in the tubing and an upward pull shears a release mechanism in the landing assembly. The retrievable landing assembly is hydraulically set and mechanically retrieved.

Abstract: A liner hanger and setting tool for use in oil well completions employing a liner hanger having a one piece body member and spring biased slips and a setting tool having a hydraulically actuated slip release mechanism normally retaining the slips in a retracted position and operable upon application of fluid pressure for releasing such slips. The setting tool has a retreivable pack off bushing disposed in the bore of the liner hanger and a threaded nut type of release for disconnecting the setting tool from the liner hanger. The setting tool requires pressure for setting and rotation for release.

Abstract: A liner hanger and setting tool for use in oil well completions employing a liner hanger having a one piece body member and spring biased slips and a setting tool having a hydraulically actuated slip release mechanism normally retaining the slips in a retracted position and operable upon application of fluid pressure for releasing such slips. The setting tool has a retrievable pack-off bushing disposed in the bore of the liner hanger and a threaded nut type of release for disconnecting the setting tool from the liner hanger. The setting tool requires pressure for setting and rotation for release.