Patent ID: 7438126
Filing Date: 2008-10-21
Classification: E21B

Abstract:
1. An apparatus for inserting or removing a tubing hanger from a wellhead, comprising: an anchor spool having a bottom flange for fluid-tight connection to a top flange of a tubing head spool, and having a top end that supports a high-pressure packing that seals an annulus between the top end and a landing joint while permitting vertical and rotational movement of the landing joint, and an anchor plate having connectors for detachably securing ram ends of at least two hydraulic cylinders symmetrically disposed about the anchor spool; and a detachable superstructure having the at least two hydraulic cylinders and a tool support structure connected to respective cylinder ends of the at least two hydraulic cylinders, the tool support structure comprising a control plate having a top side, and a bottom side, and including a fluid passage extending between the top and bottom sides, a first adapter connected to the top side of the control plate in fluid communication with the fluid passage, and a second adapter connected to the bottom side for secure connection of the landing joint for the tubing hanger.