Wells – With eduction pump or plunger – Having liquid-gas separator
Reexamination Certificate
2006-03-29
2009-06-09
Gay, Jennifer H (Department: 3676)
Wells
With eduction pump or plunger
Having liquid-gas separator
C166S378000
Reexamination Certificate
active
07543633
ABSTRACT:
A progressing cavity pump is located within a well and has a gas separator for separating gas before reaching the pump. The pump has a rotor that is driven by a string of rods extending to the surface. A drive shaft for the gas separator is coupled to the rotor during pumping operation both for axial as well as rotational movement. The rotor assembly, when lowered through the tubing, stabs into engagement with the drive shaft of the gas separator in one version. In another version, the gas separator drive shaft is lowered through the tubing with the rotor and stabs into a hub sleeve in the gas separator.
REFERENCES:
patent: 2311963 (1943-02-01), Pyle
patent: 5015162 (1991-05-01), Heppner
patent: 6561775 (2003-05-01), Wefers
patent: 6675902 (2004-01-01), Rowan et al.
patent: 6705402 (2004-03-01), Proctor
patent: 6868912 (2005-03-01), Proctor
Brown Donn J.
Porter Matthew R.
Proctor Bruce
Wilson Brown Lyle
Baker Hughes Incorporated
Bracewell & Giuliani LLP
Gay Jennifer H
Stephenson Daniel P
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