[특허]Fluid flow acceleration and pulsation generation apparatus

Fluid flow acceleration and pulsation generation apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-007/24 E21B-007/18 E21B-021/00 E21B-037/00
출원번호	US-0357101 (1994-12-16)
발명자 / 주소	Cobb Timothy A. (4518 B St. Andrews Dr. Midland TX 79707)
인용정보	피인용 횟수 : 56 인용 특허 : 0

초록 ▼

A fluid accelerating and pulsation generating apparatus for minimizing loss in fluid energy through frictional pressure drop for fluid passing through the apparatus is characterized by a body having a generally cylindrical chamber formed by a cylindrical inner wall and opposed transverse end walls. One of the end walls has one or more fluid inlet ports arranged therein and defined by passages which intersect the end wall at an angle with respect to a plane normal to the central longitudinal axis of the chamber and generally tangentially with respect to the cylindrical inner wall. Plural discharge passages intersect the opposite end wall at a curved wall portion formed between the cylindrical inner wall and the opposite end wall. The discharge passages may also be arranged to have their axes extending tangentially with respect to the inner cylindrical wall and at a predetermined angle with respect to a plane normal to the central longitudinal axis of the chamber. Pulsation generating ball members may be disposed in the chamber and engageable with the curved wall portion to momentarily cover the discharge passages as the ball members are propelled by spiral fluid flow through the chamber. The apparatus minimizes fluid pressure losses for fluid flowing therethrough and is operable to generate pulsed flow. The apparatus may be used as a fluid mixing and application device, for jet blast cleaning, material removal, and in wellbore operations for wellbore cleanout, fluid flow inducement and improved well drilling.

대표청구항 ▼

Apparatus for generating pulsating fluid flow comprising: a body having a generally cylindrical chamber formed therein and defined by a cylindrical inner wall and opposed generally transverse end walls and having a longitudinal central axis through said chamber; fluid inlet passage means extending through a first one of said end walls, said inlet passage means being in communication with a source of pressure fluid for discharging pressure fluid into said chamber in a generally spiral manner and so as to create a fluid vortex in said chamber; plural fluid discharge passages disposed in the opposite one of said end walls and having respective fluid inlet ports in communication with said chamber for receiving pressure fluid flow for discharging pressure fluid from said body; and pulsating flow generating means disposed in said body and operable to move in a generally circular path about said longitudinal central axis for periodically interrupting fluid flow through respective ones of said discharge passages to generate pulsed fluid flow from said apparatus. A method for removing solids particulates from a wellbore formed in an earth formation comprising the steps of: providing a body connected to an elongated tubing string, said body including a cylindrical chamber delimited by opposed end walls, fluid inlet passage means disposed in one of said end walls and a plurality of fluid discharge passages disposed in the other of said end walls and opening to the exterior of said body, said discharge passages being arranged to induce vortical fluid flow in said wellbore; providing a pressure pulsation generating member disposed in said chamber; and traversing said body into said wellbore connected to said tubing string and causing fluid to flow through said tubing string and through said chamber to exit said body through said discharge passages to induce a vortex in fluid in said wellbore to effect at least one of dislodging material accumulated on the walls of an earth formation in communication with said wellbore and stimulation of fluid flow from said earth formation into said wellbore, said pulsation generating member being responsive to fluid flowing through said chamber to effect pulsed flow of fluid from said discharge passages to assist in dislodging material from said earth formation for removal from said wellbore.

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Comeau, Laurier E.; Hareland, Geir; Janzen, Jeff; Kaminski, John, Drill bit with a flow interrupter.
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Frosell, Thomas J.; Sevadjian, Emile E.; Fripp, Michael L.; Echols, Ralph H., Erosion reduction in subterranean wells.
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Frosell, Thomas J.; Sevadjian, Emile E.; Fripp, Michael L.; Echols, Ralph H., Erosion reduction in subterranean wells.
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Stephenson, Stanley V.; Beisel, Joseph A., Fast pressure protection system and method.
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Dykstra, Jason D.; Fripp, Michael L.; Hamid, Syed, Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well.
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Dykstra, Jason D.; Fripp, Michael L.; Hamid, Syed, Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well.
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Dykstra, Jason D.; Fripp, Michael L., Fluid discrimination for use with a subterranean well.
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Dykstra, Jason D.; Fripp, Michael L., Fluid discrimination for use with a subterranean well.
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Brunskill, Douglas James; Standen, Robert, Fluidic impulse generator.
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Standen, Robert; Brunskill, Douglas James, Fluidic impulse generator.
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Schultz, Roger L.; Pipkin, Robert L.; Cavender, Travis W.; Skinner, Neal G., Fluidic oscillator flowmeter for use with a subterranean well.
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Cavender, Travis W.; Pipkin, Robert L.; Hunter, Timothy; Schultz, Roger L., Forming inclusions in selected azimuthal orientations from a casing section.
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Cavender, Travis W.; Pipkin, Robert L.; Hunter, Timothy; Schultz, Roger L., Forming inclusions in selected azimuthal orientations from a casing section.
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Fraim Michael L. ; McCoy Stephen D., Hydraulic underreamer and sections for use therein.
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Fraim Michael L. ; McCoy Stephen D., Hydraulic underreamer and sections for use therein.
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Fraim Michael L. ; McCoy Stephen D., Hydraulic underreamer and sections for use therein.
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Fraim Michael L. ; McCoy Stephen D., Hydraulic underreamer and sections for use therein.
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Eriksen, Egil, Method and a device for the cleaning of a piston-based hydraulic accumulator.
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Dykstra, Jason D.; Fripp, Michael Linley; DeJesus, Orlando; Gano, John C; Holderman, Luke, Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system.
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Dykstra, Jason D.; Fripp, Michael Linley; DeJesus, Orlando; Gano, John C; Holderman, Luke, Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system.
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Dykstra, Jason D; Fripp, Michael Linley; DeJesus, Orlando; Gano, John C.; Holderman, Luke, Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system.
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Dykstra, Jason D; Fripp, Michael Linley; DeJesus, Orlando; Gano, John C.; Holderman, Luke, Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system.
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Fripp, Michael Linley; Dykstra, Jason D.; DeJesus, Orlando, Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system.
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Fripp, Michael L; Dykstra, Jason D., Method and apparatus for controlling fluid flow in an autonomous valve using a sticky switch.
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Dykstra, Jason D.; Fripp, Michael L.; DeJesus, Orlando, Method and apparatus for controlling fluid flow using movable flow diverter assembly.
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Dykstra, Jason D.; Fripp, Michael L.; DeJesus, Orlando, Method and apparatus for controlling fluid flow using movable flow diverter assembly.
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Dykstra, Jason D.; Fripp, Michael L.; DeJesus, Orlando, Method and apparatus for controlling fluid flow using movable flow diverter assembly.
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Greci, Stephen M., Preventing flow of undesired fluid through a variable flow resistance system in a well.
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Surjaatmadja, Jim B.; Hunter, Timothy H.; Pipkin, Robert L., Pulsating rotational flow for use in well operations.
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Dykstra, Jason D.; Fripp, Michael L.; Holderman, Luke W., Variable flow restrictor for use in a subterranean well.
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Dykstra, Jason D.; Fripp, Michael L.; Holderman, Luke W., Variable flow restrictor for use in a subterranean well.
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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

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Fluid flow acceleration and pulsation generation apparatus 원문보기

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Fluid flow acceleration and pulsation generation apparatus 원문보기

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이 특허를 인용한 특허 (56)

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