Intermediate casing annulus monitor

Details Intermediate casing annulus monitor Intermediate casing annulus monitor

1993-09-17

1994-11-22

Buiz, Michael Powell

Wells

Submerged well

Wellhead

166 88, E21B 4300

Patent

active

053660170

ABSTRACT:
A subsea well has communication passages to enable annulus pressure between the inner and intermediate strings of casing to be monitored at the surface. The communication passages include a passage through the upper casing hanger. This passage registers with a passage through the tubing hanger assembly. The passage in the tubing hanger assembly registers with a passage in the tree assembly. The passage in the tree assembly has an outlet at the exterior of the tree assembly, where it connects to a communication line that extends to production equipment at the surface.

REFERENCES:
patent: 3971576 (1976-07-01), Herd et al.
patent: 4553589 (1985-11-01), Jennings et al.
patent: 4623020 (1986-11-01), Nichols
patent: 5143158 (1992-09-01), Watkins et al.

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