Setting tools and liner hanger assembly

摘要

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.