Casing joint assembly for producing an annulus gas cap

摘要

A casing joint assembly and methods for producing an annulus gas cap using the casing joint assembly. The casing joint assembly comprises a first valve and a second valve to control fluid pressure in the sealed annulus between the casing string and a wall of the well bore or another casing string.

主权项

1. A casing joint assembly, which comprises:
a casing joint with a casing joint wall; a first valve positioned through an opening in the casing joint wall; a second valve positioned through another opening in the casing joint wall; and wherein one of the first valve and the second valve permits gas to enter an annulus between a wellbore wall and the casing joint assembly through a workstring extending into the casing joint.