[특허]Self powered downhole tool anchor

[미국특허] Self powered downhole tool anchor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-023/04
출원번호	US-0310571 (1981-10-13)
발명자 / 주소	Hyland Craig R. (Magna UT)
출원인 / 주소	Christensen, Inc. (Salt Lake City UT 02)
인용정보	피인용 횟수 : 138 인용 특허 : 2

초록 ▼

A self powered downhole tool anchor device (10) preattached to a downhole tool (T) and unitarily supported by a drill string (DS) for a single trip into a well bore, actuated by forceful engagement with the bottom or plug (P) in the well bore and attachment to a well bore casing (C). The anchor device comprises an inner mandrel (20) and lower cone (34) containing a piston (30) and fluid (F) for axially displacing an outer mandrel and piston (44) connected thereto by shear screws (46). An upper cone (20) on the outer mandrel is connected by shear pins to a slip housing (50) containing radially expandable slips (38) keyed to the lower cone (34). A self contained power supply (PS) of combustible material (M) is ignited by a firing pin (90) striking a primer igniter (I) and generates gas pressure applied to the piston 30 and fluid (F) to shear pin (46) and axially displace the outer mandrel and piston (44) upper cone (40) slip housing (50 ) slips (38) and ratchet ring (62) relative to inner mandrel (20) and cone (34). Screws (52) are then sheared off releasing upper cone (40) from slip housing (50) and allowing relative displacement therebetween to radially expand slips (38) into gripping engagement with the well bore casing (C). A mechanical firing mechanism includes a preloaded compressed spring (100) actuated hammer (98) retained against a spring housing (102) and in a cocked firing position by a shear pin (101) extending from an outer housing (96). A trigger (108) engaged by the spring housing (102) has a foot (110) which engages the bottom of or plug (P) in the well bore. Lowering of a predetermined amount of weight of the assembled unit causes pin (101) to shear and release the hammer (98) which strikes and propels the firing pin into the igniter capsule I.

대표청구항 ▼

A self powered downhole tool anchor device preattached to a downhole tool adapted for attachment to support means for simultaneously lowering them as a unit in a single trip into a well bore and actuated by engagement with and weight thereof applied toward a bottom of or plug in the well bore for attachment to a sidewall inthe well bore comprising: an inner mandrel having a closed end portionj with coupling means thereon connected to the downhole tool. a sidewall extending around an internal chamber closed off by the closed end portion and extending axially to an opposite open end of the inner mandrel, at least one fluid passage in the sidewall of the inner mandrel. ratchet teeth on an intermediate external side portion of the sidewall of the inner mandrel, and a lower expander cone tapering outwardly and downwardly from and extending around a lower end portion of the inner mandrel; an outer mandrel and piston extending around and adapted for sliding sealing engagement with an external surface of the inner mandrel and initially connected by shearable means to the inner mandrel and including an internal piston surface area extending around the inner mandrel adjacent the fluid passage, and an upper cone situated adjacent a lower end portion of the outer mandrel and tapering inwardly toward and extending around the sidewall of the inner mandrel; a plurality of gripping slips including upper and lower internal surfaces angularly spaced around the cones and fixed against rotation relative to at least one of the cones and adapted for engagement and radial displacement by the cones into gripping engagement with the sidewall in the well bore; releasable slip housing means extending around and attached by shearable means to the upper cone portion of the outer mandrel and piston for displacing and maintaining the slips angularly spaced about for contact with the upper and lower cones; ratchet means including ratchet teeth adapted for locking engagement in one direction with external teeth of the inner mandrel and displaceable in one axial direction by movement of the outer mandrel and piston relative to the inner mandrel for preventing opposite reverse movement and disengagement of the cones from the slips and slips from the sidewall; power supply means supported adjacent the lower open end of the inner mandrel including combustible material adapted to be ignited by a primer igniter and supply a sufficient source of fluid pressure in the internal chamber for releasing and displacing the outer mandrel and piston, upper cone and slips relative to the inner mandrel and lower cone and force the gripping slips radially outwardly into gripping engagement with the sidewall in the well bore comprising a power supply housing attached to the lower cone portion of the inner mandrel adjacent the open end including an internal cartridge chamber extending between opposite ends of the housing, a cartridge of ignitable combustible propellant material situated in the internal cartridge chamber with one end adjacent the open end of the inner mandrel including a head at an opposite end of the cartridge, and a central primer igniter capsule inserted into a central bore in the head for impaction and ignition by and upon release of preloaded firing means; preloaded mechanical firing means supported adjacent to the power supply means for striking the primer igniter and igniting the combustible material including an outer firing means housing attached to one end portion of the power supply housing, firing pin means including a movable firing pin situated within the firing means housing and adjacent the head for striking the primer igniter capsule, and releasable preloaded hammer means situated within the firing means housing and adjacent the firing pin means for impacting and propelling the firing pin into the primer igniter capsule; and mechanical trigger means adjacent to the firing means and adapted for engaging a bottom or plug in the bore hole and to release the preloaded firing means when a sufficient predetermined amount of weight of the anchor device and support means is released and applied to the trigger means supported by the bottom or plug.

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Cook,Robert Lance; Brisco,David Paul; Stewart,R. Bruce; Ring,Lev; Haut,Richard Carl; Mack,Robert Donald, Wellhead.
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Cook,Robert Lance; Brisco,David Paul; Stewart,R. Bruce; Ring,Lev; Haut,Richard Carl; Mack,Robert Donald, Wellhead with radially expanded tubulars.
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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
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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