Wells – With eduction pump or plunger – Having liquid-gas separator
Patent
1993-02-19
1994-09-06
Bui, Thuy M.
Wells
With eduction pump or plunger
Having liquid-gas separator
1661175, 166188, E21B 4312
Patent
active
053439457
ABSTRACT:
Oil and gas are separated downhole in a free flowing well and are transmitted separately to the surface. Liquid oil is transmitted through an elongated tubing which extends into a liquid column in the bottom of the well and is anchored in a liquid production tubing string to form an annular flow space. Gas flows from a wellbore space above the column of liquid through the annular space and through a flow passage which may be formed by a side pocket mandrel into the well annulus and then to the surface. The liquid conducting tubing is secured in the tubing string and a seal point is formed by a packer above the gas flow passage formed by the side pocket mandrel. Alternative arrangements provide for a subsurface gas flow safety valve interposed in the gas flow path. The safety valve may be interposed in a cross-over body which permits flow of liquid and gas therethrough and past a seal formed between the body and the tubing string.
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Harris Jeffrey L.
Weingarten Jean S.
Williamson M. Jane
Atlantic Richfield Company
Bui Thuy M.
Martin Michael E.
Tsay Frank S.
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