Pumps – Combined
Patent
1988-11-22
1990-04-03
Smith, Leonard E.
Pumps
Combined
4174233, F04B 1900
Patent
active
049136305
ABSTRACT:
A submersible pump system and method for producing oil from gassy wells is disclosed in which at least first- and second-stage gas separators protect a submersible pump from vapor lock. The pump communicates with the production tubing and is driven by a shaft extending from a motor, through the first- and second-stage gas separators. The first-stage gas separator has a first-stage inlet through the housing in communication with the production fluid from the producing formation. A primary means for separating gas components from the production fluid is in communication with the first-stage inlet and expels separated gas into the annulus through a first-stage gas outlet and advances the liquid component of the production fluid through the first-stage liquid outlet. The second-stage gas separator has a second-stage inlet communicating with the first-stage liquid outlet and leading to a secondary means for separating the gas from the production fluid. The separated gaseous components are expelled through the housing and into the annulus at a second-stage gas outlet while the retained liquid components of the production fluid are presented to the pump, or to additional separation stages, through a second-stage outlet. The production fluid ultimately entering the pump inlet is substantially limited to the liquid components of the production fluid which is pumped through a pump outlet and up the production tubing.
REFERENCES:
patent: 1639734 (1927-08-01), Jones
patent: 2969742 (1961-01-01), Arutunoff
patent: 4088459 (1978-05-01), Tuzson
Cotherman Robert D.
Way Keith F.
Shell Western E&P Inc.
Smith Leonard E.
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