Patent ID: 7909107

Claim:
A running tool for setting and internally testing a packoff of a well pipe hanger, the running tool comprising: an elongated stem having an axial passage, threads in its outer surface, and a downward facing shoulder positioned adjacent thereto; a body surrounding and threaded to the stem such that rotation of the stem causes the stem to translate axially relative to the body from a run-in position to a packoff set position, then to a packoff test position, and finally to a release position; an engagement element, carried by the body and adapted to be engaged with a hanger, the axial movement of the stem relative to the body to the run-in position causing the shoulder to contact the engagement element and move it radially outward and in engagement with the hanger to releasably secure the running tool to the hanger; and a piston, substantially surrounding portions of the stem and the body and downwardly moveable relative to the stem in response to fluid pressure applied to the axial passage, while in the packoff set position to thereby set a packoff seal.