Backpressure adapter pin and method of use

Details Backpressure adapter pin and method of use Backpressure adapter pin and method of use

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 33/04 (2006.01) E21B 33/12 (2006.01)

Patent

CA 2415631

A tubing assembly including a tubing string and tubing hanger provides a fluid passage with backpressure threads for securing a backpressure plug in a fluid-tight seal below the tubing hanger, so that the tubing hanger can be removed from the tubing string. The back pressure threads are preferably incorporated in a backpressure adapter pin connected between the tubing string and the tubing hanger. The adapter pin may also incorporate external weight-bearing shoulders for snubbing and/or suspending the tubing assembly. The backpressure plug is inserted or removed using a backpressure plug tool that slides through a packing in a pressurized casement that maintains pressure in an axial passage through a control stack of the wellhead.

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