[특허]Sliding sleeve valve

Sliding sleeve valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-051/00
출원번호	US-0878734 (1992-05-05)
발명자 / 주소	Wong Fred S. (Mandeville LA)
출원인 / 주소	Grace Energy Corporation (Dallas TX 02)
인용정보	피인용 횟수 : 53 인용 특허 : 0

초록 ▼

A sliding sleeve valve for downhole use. A tubular main body has a radial flow port there-through and a primary annular seal carried adjacent its inner diameter and spaced longitudinally from the flow port in a first direction. A sleeve is carried co-axially within the main body for selective relative longitudinal movement. The sleeve has a seal section with an outer diameter sized to slidably sealingly engage the primary seal. The sleeve also has a radial aperture through the seal section and a recess in the outer surface of the seal section, surrounding and longer than the radially outer end of the aperture. The sleeve has a closed position, wherein the aperture and recess are longitudinally spaced from the primary seal in the first direction, and an open position, wherein the aperture is longitudinally spaced from the primary seal in a second direction opposite the first. The recess is sized and configured to permit the aperture to pass the primary seal while moving from closed to open position, under given temperature and pressure conditions, without substantial damage to the primary seal.

대표청구항 ▼

A sliding sleeve valve for controlling flow between a well annulus and a string of well conduit, comprising: a tubular housing adapted for connection into such string of well conduit as part thereof, and having a radial flow port therethrough and a primary annular seal carried adjacent the inner diameter of the housing and spaced longitudinally from the flow port in a first direction; a sleeve carried co-axially within the housing for selective relative longitudinal movement, and having a seal section with an outer diameter sized to slidably sealingly engage the primary seal, a radial aperture through the seal section, and a recess extending only part way through the thickness of the sleeve, in the outer surface of the seal section, in communication with the aperture, the sleeve having a closed position wherein the aperture and recess are longitudinally spaced from the primary seal in the first direction, and a pressure relief position wherein the aperture is longitudinally spaced from the primary seal in a second direction opposite the first direction and in communication with the flow port; the recess being sized, configured, and positioned to permit the aperture to pass the primary seal while moving from the closed position to the pressure relief position, under given temperature and pressure conditions, without substantial damage to the primary seal.

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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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연합인증

Sliding sleeve valve 원문보기

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Sliding sleeve valve 원문보기

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이 특허를 인용한 특허 (53)

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