Methods and apparatus for subsea well intervention and subsea wellhead retrieval

摘要

#$%^&*AU2012238269B220150827.pdf#####METHODS AND APPARATUS FOR SUBSEA WELL INTERVENTION AND SUBSEA WELLHEAD RETRIEVAL ABSTRACT A method of performing an operation in a subsea well, the method comprising: positioning a tool (100) proximate a subsea wellhead (10), the tool (100) having at least one grip member (125) and the tool (100) being attached to a downhole assembly (115); clamping the tool (100) to the subsea wellhead (10) by moving the at least one grip member (125) into engagement with a profile (50) on the subsea wellhead (10); applying an upward force to the tool (100) thereby enhancing the grip between the grip member (125) and the profile (50) on the subsea wellhead (10); and performing the operation in the subsea well by utilizing the downhole assembly (115).