[특허]Geothermal well chemical injection system

[미국특허] Geothermal well chemical injection system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-033/068 E21B-033/03
출원번호	US-0398215 (1989-08-24)
발명자 / 주소	Godare William L. (Houston TX)
출원인 / 주소	Foster Oilfield Equipment Co. (Houston TX 02)
인용정보	피인용 횟수 : 38 인용 특허 : 11

초록 ▼

A system for injecting chemicals into a geothermal well near the bottom of the well bore for optimum efficiency. The system includes a spool assembly with a master valve for control of the geothermal flow and a secondary outlet formed of an angle to permit the chemical injection chamber to be lowered into the well. The secondary outlet is attached to the main spool in such a way as to allow internal thermal expansion while permitting the chemical injection chamber to be fed by capillary tube to the bottom of the well bore. The chemical injection device includes an injection chamber through which the chemical is disbursed and a segmented sinker bar to provide the necessary weight to carry the chamber to the bottom of the well against the geothermal well flow. An annular seal assembly in the spool prevents leaking by being pressure energized by the geothermal production fluid. As a result, production can continue during the chemical injection process.

대표청구항 ▼

A system for injecting a chemical fluid into a producing geothermal well, the geothermal well having production casing disposed therein, said system comprising: a surface spool assembly with an interior chamber sealingly receiving an upper end of the production casing, said spool assembly having a master valve mounted on an upper portion thereof for controlling fluid flow through said interior chamber; said spool assembly including an injection port located below said master valve and above said upper end of said production casing; said injection port being formed in a side wall of said spool assembly at a substantial downward angle to the vertical axis of said interior chamber to provide a fluid communication with said interior chamber; flexible seal means closing the outward end of said injection port but permitting the passage therethrough of tubular objects; an injector assembly having external dimensions permitting the assembly to be lowerable through said flexible seal means, said injection port and said interior chamber into the well casing; said injector assembly including a tubular injector chamber and a small diameter flexible fluid tube communicating with said injector chamber for lowering said injector assembly into the well, whereby chemical fluid may be supplied from the surface through said flexible tube to said injector chamber for injection into the geothermal well; segmented weight means secured to said injection assembly; and said segemented weight means being laterally flexible to permit insertion through said injection port; said interior chamber and said production casing, whereby well production may be maintained during insertion and utilization of said injector assembly.

이 특허에 인용된 특허 (11) 인용/피인용 타임라인 분석

Tsutsumi Jiro (Iwate JPX) Uchiyama Minolu (Morioka JPX) Katagiri Kunio (Funabashi JPX), Chemical injection tube mounting structure for a geothermal well.
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Shannon ; Jr. ; Frederick E. ; Laky ; Tibor, Flexible conduit injection system.
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Hayatdavoudi Asadollah (101 Harwell Lafayette LA 70503), Fluid agitation system.
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Winders Ramon E. (Houma LA), Gas lift well with improvement.
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Reed Lehman T. (3505 Chester Ave. Bakersfield CA 93301), Geothermal expansion spool piston.
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Forester Buford G. (2128 Hazlitt Houston TX 77032), Geothermal expansion wellhead system.
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Reed Leaman T. (Bakersfield CA), Geothermal well head assembly.
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Wells ; Jr. Frederic D. (Shreveport LA), Geothermal wellhead packing assembly.
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Rogers William C. (2301 Bryant Dr. East Point GA 30344) Alford ; III George W. (1954 Old Datona Rd. Daytona Beach FL 32014) Cullimore D. Roy (2003 Styles Crecent East Regina ; Saskatchewan S4V 0P8 CA, Method and apparatus for cleaning wells.
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Patterson John C. (Plano TX) Hearn David D. (Richardson TX), Wellbore cleanout apparatus and method.
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Light Bruce D. (Kenner LA) Louviere Dennis P. (Convent LA), Wellhead assembly for injection wells.
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이 특허를 인용한 특허 (38) 인용/피인용 타임라인 분석

Donald, Ian; Reid, John, Apparatus and method for processing fluids from a well.
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Donald, Ian; Reid, John, Apparatus and method for processing fluids from a well.
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Donald, Ian; Reid, John, Apparatus and method for processing fluids from a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John, Apparatus and method for recovering fluids from a well and/or injecting fluids into a well.
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Donald, Ian; Reid, John; Vyas, Manish, Capillary injector.
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Monjure Noel A. ; Sikes ; Sr. Kenneth ; Comeaux David D. ; Bobbie Francis R. ; Ropp R. Lewis, Casing annulus remediation system.
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Monjure Noel A. ; Sikes ; Sr. Kenneth ; Comeaux David D. ; Bobbie Francis R. ; Ropp Ralph Lewis, Casing annulus remediation system.
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Donald, Ian; Reid, John; Crawford, Alan; White, Paul W., Connection system for subsea flow interface equipment.
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Donald, Ian; Reid, John; Crawford, Alan; White, Paul W., Connection system for subsea flow interface equipment.
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Donald, Ian; Reid, John; Crawford, Alan; White, Paul W., Connection system for subsea flow interface equipment.
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Lee, Jeffrey Michael; Robinson, Stuart, Geothermal integrated expansion spool assembly.
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Dobbs Rocky, Hydraulic turbine compressor.
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Langeteig, Bjarne Kåre, Injection module, method and use for lateral insertion and bending of a coiled tubing via a side opening in a well.
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Bunney, Larry, Manifold device and method of use for accessing a casing annulus of a well.
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Jack Lenard Alfred,CAX ; Moan Dean Edward,CAX, Method of servicing a well.
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Cicanese, Frank, Oil well fire suppression device.
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Chan,Kwong Onn C.; Sedgwick,David J.; Comeaux,David; Murphy,John, Remedial system to flush contaminants from tubing string.
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Howell, James J.; Udipi, Mahesha; Viator, Mark; Borak, Eugene; Comeaux, David, System and method for remediating a wellbore annulus.
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Howell, James J.; Comeaux, David Daniel; Porteous, Richard; Karp, Mariusz, Tool and method for providing access to a wellhead annulus.
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Monjure Noel A. ; Comeaux David D. ; Scott Michael J. ; Sikes ; Sr. Kenneth ; Ditta Frank ; Wolcott Tim Gus ; Young Larry M., Variable pressure pump through nozzle.
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Comeaux, David D.; Howell, James J.; Porteous, Richard; Monjure, Noel A.; Adamek, Frank C., Varying access points for tubing and casing monitoring and casing annulus remediation systems.
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Hill, Thomas G.; Bolding, Jeffrey L., Wellbore bypass method and apparatus.
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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] Geothermal well chemical injection system 원문보기