[특허]Recirculating gas separator for electric submersible pumps

[미국특허] Recirculating gas separator for electric submersible pumps 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-043/38 E21B-043/40
출원번호	US-0462667 (1990-01-09)
발명자 / 주소	Powers Maston L. (Oklahoma City OK)
출원인 / 주소	Conoco Inc (Ponca City OK 02)
인용정보	피인용 횟수 : 46 인용 특허 : 6

초록 ▼

A recirculating gas separator for a submersible well pump includes a rotary gas separator for separating liquid to be directed to the pump from a gas. The separator includes a separating chamber, a well fluid inlet upstream of the separating chamber, and a liquid discharge outlet downstream of the separating chamber. A recirculating system recirculates a portion of the liquid discharged from the discharge outlet back to the separating chamber so that a gas-to-liquid ratio in the separator is substantially lower than a gas-to-liquid ratio of well fluid entering the well fluid inlet. Thus, the submersible well pump with the recirculating gas separator can successfully pump wells having substantially higher gas-to-liquid ratios than can be accomplished with prior devices.

대표청구항 ▼

A gas separator apparatus for a submersible well pump, comprising: a rotary gas separator means for separating liquid to be directed to said pump from gas, said separator means including a separating chamber, a well fluid inlet upstream of said separating chamber, and a liquid discharge outlet downstream of said separating chamber; and recirculating means for recirculating a portion of the liquid discharged from said discharge outlet back to said separating chamber so that a gas-to-liquid ratio in said separator means is substantially lower than a gas-to-liquid ratio of well fluid entering said well fluid inlet wherein said recirculating means comprises: a recirculating pump means for pumping liquid from said discharge outlet to said submersible well pump; liquid extraction chamber means for extracting a portion of the liquid discharged by said recirculating pump means before said liquid reaches said submersible well pump; liquid injection chamber means for injecting said portion of said liquid into said separator means upstream of said separating chamber; and conduit means for conducting said portion of said liquid from said liquid extraction chamber means to said liquid injection chamber means. A method of pumping liquid from a well producing well fluids having a relatively high gas-to-liquid ratio, comprising: (a) centrifugally separating said well fluid into a liquid and a gas with a separator located downhole in said well; (b) directing said separated liquid toward an inlet of a submersible well pump; (c) recycling a portion of said separated liquid to said separator; and (d) providing an effective gas-to-liquid ratio in said separator substantially lower than a gas-to-liquid ratio of said well fluid prior to separation.

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

Chow Robert B. (Walnut CA) Nelson Richard V. (Fullerton CA), Down-hole gas anchor device.
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Salant Richard F. (Arlington Heights IL), Gas-liquid separator.
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Acker Roy M. (Los Angeles CA), Liquid-gas separator apparatus.
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Lee Lawrence C. (Bartlesville OK) Tyagi Mukul K. (Bartlesville OK) Furnas Michael W. (Bartlesville OK) Traylor Francis T. (Bartlesville OK), Liquid-gas separator apparatus.
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McIntyre Jack W. (107 N. Overland Ave. Fort Stockton TX 79735), Method and apparatus for removing excess water from subterranean wells.
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Tuzson ; John J., Separator.
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이 특허를 인용한 특허 (46) 인용/피인용 타임라인 분석

Wang, Chengbao; Pidsadowski, Kelly, Abrasion resistant gas separator.
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Latos Gordon D.,CAX ; Ravensbergen John E.,CAX, Apparatus and method for downhole fluid phase separation.
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Latos,Gordon D.; Ravensbergen,John E., Apparatus and method for downhole fluid phase separation.
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Delwin E. Cobb, Apparatus and method for separating gas and solids from well fluids.
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Stewart, Joseph; Nowitzki, Wesley John; Kenner, John Vanderstaay, Apparatus, system and method for reducing gas to liquid ratios in submersible pump applications.
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Ridgeway Richard L. ; Sulton John W. ; Graham Scott D., Crude oil measurement system and method.
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Ridgeway Richard L. ; Sulton John W. ; Graham Scott D., Crude oil measurement system and method.
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Lee Woon Yung ; Evans Bobby D., Downhole gas separator having multiple separation chambers.
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Shaw, Christopher K.; Voss, David A.; Knight, Jeffrey W.; Fox, Michael J.; Loudermilk, Dewey Michael; Bebak, Kenneth T., ESP pump for gassy wells.
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Gay, Farral D.; Bierig, Kevin R., Electric submersible pump (ESP) with recirculation capability.
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Grubb, William A.; Woodworth, Carl G.; Fajt, Mark D.; Smith, Steve, Fluid filtration tool.
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Grubb, William A.; Woodworth, Carl G.; Smith, Steve, Fluid filtration tool.
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Ketter,Chris; Floyd,Raymond E.; Wang,Chengbao, Gas separator agitator assembly.
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Ellithorp, Verley Gene; Ellithorp, Brian, Gas separator assembly for generating artificial sump inside well casing.
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Ellithorp, Verley Gene; Ellithorp, Brian, Gas separator assembly for generating artificial sump inside well casing.
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Brown, Donn J.; Wilson, Brown L., Gas separator improvements.
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Lopes, Divonsir; Souza, Robson de Oliveira; Soares, Rogerio Floriao, Gas separator with automatic level control.
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Gay, Farral D.; Bebak, Kenneth T., Gas-lock re-prime device for submersible pumps and related methods.
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Ribeiro Geraldo Afonso Spinelli Martins,BRX ; Lopes Divonsir,BRX ; Do Vale Osvaldo Roberto,BRX ; Fran.cedilla.a Fernando De Almeida,BRX ; Rosa Eugenio Spano,BRX ; Prado Mauricio Gargaglione,BRX, Helical separator.
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Morrison William R. ; Woodworth Carl G. ; Allen Robert P., Inducer for increasing centrifugal pump efficiency in wells producing high viscosity crude oil.
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Jonathan R. Spence CA; Kevin McDowell CA; Mike P. Wagner CA; Sean Sanders CA, Mechanical deaeration of bituminous froth.
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Hays Coy L. ; Brunson Thomas A. ; Lenz Gary A., Method and apparatus for diagnosing a pump system.
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Bergren Frank E. ; Weingarten Jean S., Method and system for increasing oil production from an oil well producing a mixture of oil and gas.
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Brady Jerry L. ; Stevenson Mark D. ; Klein John M. ; Cawvey James L. ; Hearn David D., Method and system for increasing oil production from an oil well producing a mixture of oil and gas.
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Brady Jerry L. ; Cawvey James L. ; Stevenson Mark D. ; Klein John M., Method and system for separating and injecting gas and water in a wellbore.
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Brady Jerry L. ; Stevenson Mark D. ; Klein John M. ; Cawvey James L., Method and system for separating and injecting gas in a wellbore.
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Stevenson Mark D. ; Brady Jerry L. ; Klein John M. ; Cawvey James L., Method and system for separating and injecting gas in a wellbore.
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Brady Jerry L. ; Stevenson Mark D. ; Klein John M. ; Cawvey James L., Method and system for separating and injecting water in a wellbore.
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Peachey Bruce R.,CAX, Method for borehole separation of oil and water in an oil well.
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Brady Jerry L. ; Kohring James J. ; North Robert J., Method for generating a flow profile of a wellbore from pulsed neutron logs.
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Brady Jerry L. ; Watson Becky A. ; North Robert J., Method for generating a flow profile of a wellbore using resistivity logs.
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Wolflick John R. ; Cawvey James L. ; Brady Jerry L. ; Whitworth John R. ; Hearn David D., Method for increasing oil production from an oil well producing a mixture of oil and gas.
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Baum Thomas H. ; Matienzo Luis J. ; Simpson Cindy Reidsema ; Varsik Joseph E., Method for photoselective seeding and metallization of three-dimensional materials.
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Bullock,Aaron Duane; Knox,Dick L., Motor cooler for submersible pump.
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Wang,Chengbao, Multi-stage gas separator.
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Svedeman Steven J. ; Petullo Steven P. ; Klein John M. ; Cawvey James L. ; Brady Jerry L. ; Stevenson Mark D., Oil and gas production with downhole separation and compression of gas.
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Guelich, Johann, Pump system and method for delivering multi-phase mixtures.
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Van Dam, Jeremy Daniel; Hoyte, Scott Mordin, Pumping system for a wellbore and methods of assembling the same.
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Berry,Michael R., Recirculation gas separator.
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Charron Yves,FRX, Single-shaft compression-pumping device associated with a separator.
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Scarsdale, Kevin T., Submersible pumping system.
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Shaw, Chris K., Subsea well having a submersible pump assembly with a gas separator located at the pump discharge.
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Lee Woon Yung, Tapered flow gas separation system.
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Fowler, Tracy A.; Fielding, Brian J., Vertical annular separation and pumping system with integrated pump shroud and baffle.
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Fielding, Brian J.; Fowler, Tracy A., Vertical annular separation and pumping system with outer annulus liquid discharge arrangement.
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Divonsir Lopes BR, Well-bottom gas separator.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Recirculating gas separator for electric submersible pumps 원문보기