Patent ID: 9624747
Date: 2017-04-18
CPC Classifications: E21B

Claim:
1. A tubing hanger assembly, comprising: a tubular outer tubing hanger member adapted to land in a bore of a wellhead, the outer tubing hanger member having a bore with an axis; a tubular inner tubing hanger member having an engaged position in the bore of the outer tubing hanger member, the inner tubing hanger member adapted to be secured to a string of production tubing; a retaining mechanism mounted to the outer tubing hanger member and the inner tubing hanger member for selectively allowing the inner tubing hanger member to be lowered relative to the outer tubing hanger member, after the inner tubing hanger member is moved from the engaged position to a disengaged position, then selectively allowing the inner tubing hanger member to be returned back to the engaged position, to create tension in the string of production tubing; and wherein the retaining mechanism operates in response to relative rotational movement between the inner tubing hanger member and the outer tubing hanger member the retaining mechanism comprising: