| 摘要 |
A wellhead casing hanger 28 comprises a hanger body having a bore extending and a stepped outer shoulder. The stepped outer shoulder is configured to receive an expandable load ring 70. The expandable load ring is axially moveable between a first, contracted position allowing the wellhead casing hanger to pass through a specified minimum bore and a second, expanded position whereby the wellhead casing hanger is suspended on the expandable load ring when the expandable load ring engages an annular groove 24 in the wellhead housing. The expandable load ring is moved to the second, expanded position by engagement with an actuation ring 74 when the actuation ring lands on the internal shoulder 22 of the wellhead. |
