Floating shaft gas separator

Wells – With eduction pump or plunger – Having liquid-gas separator

Reexamination Certificate

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Details

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

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