| 摘要 |
A wellhead assembly having a wellhead member with an internal shoulder providing an upper outer shoulder and a lower inner seat, and a plurality of pins threaded therethrough and a landing bowl of arcuate segments connected and biased apart at their facing ends to seat on the upper shoulder so that a tubing string may be run therethrough and moved inward by said pins to be above the lower inner seat for seating thereon to support a tubing string in tension therebelow.
|
