[특허]Packer with chemically activated sealing member and method of use thereof

Packer with chemically activated sealing member and method of use thereof 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-033/12 E21F-016/00
출원번호	US-0789055 (1977-04-20)
발명자 / 주소	Laflin George P. (Denver CO) Durborow Clarence J. (Englewood CO)
출원인 / 주소	The Dow Chemical Company (Midland MI 02)
인용정보	피인용 횟수 : 92 인용 특허 : 0

초록 ▼

A tool, e.g., a well packer, for restricting the flow of fluid through an annulus defined by the interior walls of a fluid conduit, e.g., well casing, and the exterior of a tubular member, e.g., the packer mandrel, is disclosed. The novelty of the present invention lies in the deformable packer element of such a tool, wherein in lieu of rubber, a chemically activated material which expands upon contact with fluid in the conduit is employed to effect the desired seal. A method of using such a tool is also disclosed.

대표청구항 ▼

In a tool for restricting the flow of fluid through an annulus defined by the interior walls of a fluid conduit and the exterior of a tubular member within said fluid conduit, said tool being of the type having an elongated mandrel and radially surrounding at least a portion of the length of the mandrel, at least one unitary deformable packer element for sealably engaging the walls of said fluid conduit to prevent the flow of a fluid through said annulus, the improvement which comprises: as the deformable packer element, a chemically expandable packer element which expands upon contact with said fluid; and means for restraining longitudinal expansion of said packer element, to thereby promote radial expansion of said element. A method for restricting the flow of fluid through an annulus defined by the interior walls of a fluid conduit and the exterior of a tubular member within said fluid conduit, comprising (1) providing a tool of the type having an elongated tubular mandrel of a material substantially unreactive with said fluid, and radially surrounding at least a portion of the length of the mandrel, at least one unitary deformable packer element for sealably engaging the walls of said fluid conduit, wherein said packer element is a chemically expandable packer element which expands upon contact with said fluid, and means for mechanically deforming said packer element; (2) positioning said packer tool withhin said fluid conduit so that the longitudinal axis of said packer is in substantial alignment with the longitudinal axis of said fluid conduit; (3) mechanically deforming the packer element to cause said element to engage the walls Of said fluid conduit; and (4) thereafter contacting said packer element with said fluid, thereby further expanding said packer into more tight engagement with the walls of said fluid conduit.

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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

Packer with chemically activated sealing member and method of use thereof 원문보기

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Packer with chemically activated sealing member and method of use thereof 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (92)

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