E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/38 (2006.01) E21B 43/12 (2006.01)
Patent
CA 2350453
Method and apparatus for removing water from a gas well to permit efficient production of gas while protecting formation from introduced pressures. The apparatus comprises a check valve that seals the casing from production zone when hydrostatic pressure of water from production accumulates in casing above production perforations and checkvalue exceeds formation pressure. When the casing is sealed, a compressor pressurizes gas into the casing but not an exhaust conduit, the top of the casing being sealed around the exhaust conduit, permitting communication between the conduit and a suitable destination, such as via liquid separators on into sale pipeline. Accumulated water is caused to flow into the bottom of the exhaust conduit and out at surface to collection. When pressure within the sealed casing to the top end of exhaust conduit is equalized, the checkvalve opens and regular production can resume.
Borden Ladner Gervais Llp
Liknes Alvin C.
Northern Pressure Systems Inc.
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