[특허]Low actuation pressure bar vent

[미국특허] Low actuation pressure bar vent 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-034/06
출원번호	US-0831237 (1986-02-18)
발명자 / 주소	Wesson David S. (Katy TX) Wall Stanley J. (Oxnard CA) Hales John H. (Ventura CA)
출원인 / 주소	Halliburton Company (Duncan OK 02)
인용정보	피인용 횟수 : 18 인용 특허 : 7

초록 ▼

A low actuation pressure bar vent for use in a tool string having low pressure therein. The vent includes a body portion and a piston slidingly disposed in the body. The piston and body define a first cavity therebetween and a second cavity therebetween, spaced from the first cavity. The body further defines a plurality of transverse ports therethrough providing communication between a body central opening and a well annulus. When in a closed position, the piston sealingly closes the ports. In a first embodiment, the first cavity has a spring disposed therein. The body also defines a second plurality of ports therein providing fluid communication between the first cavity and the well annulus. Pressure in the well annulus and the spring bias the piston toward an open position uncovering the ports. In an alternate embodiment, a pressurized gas biases the piston. The second cavity is filled with a fluid such that movement of the piston is prevented. A break plug is positioned in the piston and includes a shearable portion, which when sheared, allows the fluid in the second cavity to be released to the tubing string. The biasing force moves the piston to the open position, displacing the fluid from the second cavity. During assembly, an assembly plug holds the piston closed.

대표청구항 ▼

A tubing vent comprising: body means, defining a central opening therethrough, attachable to a tool string and having port means thereon for providing a communication between a well annulus and said central opening; piston means reciprocably disposed in said body means central opening and having a closed position covering said port means and an open position; biasing means for biasing said piston means toward said open piston; balancing means for balancing said biasing means and for maintaining said piston in said closed position, said balancing means comprising: fluid reservoir means between said body means and piston means; and a volume of fluid disposed in said fluid reservoir means, and sealingly enclosed therby for preventing movement of said piston means from said closed position; location means for locating and maintaining said piston means in said closed position such that at least a portion of said fluid may be added to said fluid reservoir means, said location means being removable prior to attaching said body means to said tubing string; and releasing means for releasing said balancing means and for allowing said biasing means to move said piston means from said closed position to said open position.

이 특허에 인용된 특허 (7) 인용/피인용 타임라인 분석

Vann Roy R. (Katy TX) George Flint R. (Katy TX) Warren Dennis F. (Albuquerque NM), Bar actuated vent assembly.
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Vann Roy R. (Houston TX) Ribble George W. (Houston TX) George Flint R. (Houston TX), Bar actuated vent assembly and perforating gun.
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George Flint R. (Katy TX), Differential pressure actuated vent assembly.
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Vann Roy R. (Houston TX) Ribble George W. (Houston TX) George Flint R. (Houston TX), Pressure actuated vent assembly for slanted wellbores.
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Vann Roy R. (Houston TX) Ribble George W. (Houston TX) George Flint R. (Houston TX), Pressure actuated vent assembly for slanted wellbores.
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Vann Roy R. (Houston TX), Vent assembly.
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Edgmon John W. (Conroe TX), Weight actuated tubing valve.
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이 특허를 인용한 특허 (18) 인용/피인용 타임라인 분석

Themig, Daniel Jon; Coon, Robert Joe; Emerson, John Lee, Apparatus and method for fluid treatment of a well.
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Melenyzer George James, Ball seat with controlled releasing pressure and method setting a downhole tool ball seat with controlled releasing pressure and method setting a downholed tool.
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Gonzalez, Segi, Containers with a vent.
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Leggett Henry H. (Setia Mansion SGX), Downhole shuttle valve for wells.
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Coronado, Martin P., Hydraulic cementing port collar with integral swivel-spline feature.
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Themig, Daniel Jon; Desranleau, Christopher Denis; Coon, Robert Joe, Kobe sub, wellbore tubing string apparatus and method.
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Hales, John H.; Burleson, John D., Managing pressurized fluid in a downhole tool.
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Hales, John H; Burleson, John D, Managing pressurized fluid in a downhole tool.
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Hirth David Eugene, Reduced-shock landing collar.
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Hales, John H.; Novak, Allison E.; Burleson, John D., System and method for dynamically adjusting the center of gravity of a perforating apparatus.
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Hales, John H.; Novak, Allison E.; Burleson, John D., System and method for dynamically adjusting the center of gravity of a perforating apparatus.
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Hales, John H.; Novak, Allison E.; Burleson, John D., System and method for dynamically adjusting the center of gravity of a perforating apparatus.
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Patel Dinesh R., Valve operating mechanism.
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Gonzalez, Segi, Vent hole barrier.
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Themig, Daniel Jon, Wellbore frac tool with inflow control.
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Themig, Daniel Jon, Wellbore frac tool with inflow control.
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Themig, Daniel Jon; Desranleau, Christopher Denis; Coon, Robert Joe, Wellbore treatment apparatus and method.
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Themig, Daniel Jon; Desranleau, Christopher Denis; Coon, Robert Joe, Wellbore treatment apparatus and method.
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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] Low actuation pressure bar vent 원문보기