[특허]Inner core barrel head assembly for core tube within a drill string

[미국특허] Inner core barrel head assembly for core tube within a drill string 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-025/02 E21B-025/00
출원번호	US-0478460 (2002-05-22)
등록번호	US-7314101 (2008-01-01)
우선권정보	AU-48002/01(2001-05-23)
국제출원번호	PCT/AU02/000644 (2002-05-22)
§371/§102 date	20040430 (20040430)
국제공개번호	WO02/095183 (2002-11-28)
발명자 / 주소	Beach,Andrew
출원인 / 주소	2iC Australis Pty Ltd
대리인 / 주소	Clark & Elbing LLP
인용정보	피인용 횟수 : 25 인용 특허 : 9

초록 ▼

Inner core barrel head assembly (10) includes an upper latch body (24), a plurality of latching balls (26) which are retained in the latch body (24) and a locking sleeve (28) disposed within the latch body (24). The sleeve (28) has an outer circumferential latching surface (30) of a first outer diameter and an outer circumferential release surface (32) of a second outer diameter smaller than the first outer diameter. The locking sleeve is axially moveable relative to the upper latch body (24) between a latching position and a release position. In the latching position, the latching surface (30) is in radial alignment with the balls (26), forcing the balls (26) radially outwardly into a latch seat (12) provided on a core barrel (20) attached to a lower end of a drill rod (14). This latches the assembly (10) to the core barrel preventing withdrawal. In the release position, release surface (32) is in radial alignment with the balls (26) allowing the balls (26) to move radially inwardly out of engagement with the latch seat (12).

대표청구항 ▼

The invention claimed is: 1. An inner core barrel head assembly for releasably latching in a latch seat provided in a drill string, said assembly comprising: an upper hollow latch body; a plurality of latching elements retained in said latched body; a hollow locking sleeve disposed within said upper latch body, said locking sleeve having a latching surface of a first outer diameter and a release surface of a second outer diameter less than said first outer diameter, said locking sleeve axially moveable relative to said upper latch body between a locking position and a release position, said locking position characterised by said latching elements being in abutment with said latching surface forcing said latching elements to move radially outwards where said latching elements can engage said latch seat to lock said assembly to said drill string, and said release position characterised by said release surface juxtaposed radially inside of said latching elements to allow said latching elements to move radially inwards out of engagement with said latch seat; an internal passage constituted in part by said hollow locking sleeve through which fluid can flow when said inner core barrel assembly is tripped through said drill string; and a first valve for opening and closing said internal passage, said first valve comprising a first moveable stop located in the internal passage and a first seat formed on an up hole end of the locking sleeve wherein the first moveable stop closes the internal passage when seated on the first seat to block flow of fluid in a down hole direction. 2. The assembly according to claim 1 further comprising a detent for releasably holding said locking sleeve in said locking position. 3. The assembly according to claim 2 wherein said detent comprises a resilient ring through which said locking sleeve can be selectively pushed and pulled. 4. The assembly according to claim 1 further comprising a hollow release sleeve slidably coupled to said locking sleeve to enable said release sleeve and locking sleeve to move axially relative to each other for a first distance. 5. The assembly according to claim 4 wherein said hollow release sleeve forms part of said internal passage. 6. The assembly according to claim 4 further comprising a coupling member extending radially through said locking sleeve and engaged with said release sleeve. 7. The assembly according to claim 6 wherein one of said locking sleeve and release sleeve is provided with a pair of axially extending slots through which said coupling member passes. 8. The assembly according to 1 further comprising a first spring disposed about an outer surface of the locking sleeve and inside of the upper latch body, the first spring urging the first moveable stop in an up hole direction from the first seat thereby biasing the first valve toward the open position. 9. The assembly according to claim 8 wherein said first spring urges said coupling member in an up hole direction to lift said stop from said first seat. 10. The assembly according to claim 7 further comprising a lower latch body coupled between said upper latch body and a core tube, said lower latch body provided with an axial bore which forms part of said inner axial passage and a second valve operable for opening and closing said bore. 11. The assembly according to claim 10 wherein said second valve includes a second moveable stop, a second seat and a bypass seat, the bypass seat being up hole of the second seat and the second moveable stop being located in the lower latch body between the bypass seat and the second seat, wherein when said second stop is seated on said bypass seat fluid can flow in an up hole direction about said second stop and through said bypass seat, and when the second stop is seated on the second seat fluid is blocked from flowing there past in a down hole direction through the lower latch body. 12. The assembly according to claim 1 further comprising a retaining ring about an outer surface of said upper latch body through which said latching elements can partially extend. 13. The assembly according to claim 1 wherein said latch elements are in the form of balls. 14. The assembly according to claim 1 wherein said latching seat includes a tapered outer surface portion between said latching surface and said release surface.

이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

Aumann James T. ; Hyland Craig R., Apparatus for recovering core samples under pressure.
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Marshall John C,CAX, Core barrel apparatus.
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Young David E. (Seabrook TX) Koskie ; Jr. Earl T. (Conroe TX) Easton Andrew R. (Oak Ridge North TX), Coring tool.
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Thompson Terrence L. (Minneapolis MN), Fast descent core barrel apparatus.
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Nenkov Nikolay D. (Sofia BGX) Petrov Ivan B. (Assenovgrad BGX) Peev Stoyko P. (Plovdiv BGX), Fixing mechanism for a wireline core barrel of core drilling equipment.
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Collee Pierre E. (Kingwood TX), Method and apparatus for pressure coring with non-invading gel.
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Aumann, James T.; Hyland, Craig R., Method and apparatus for recovering core samples under pressure.
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Able Robert E., Positive latch core barrel apparatus.
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McLeod Galvin Thomas,AUX, Retraction system for a latching mechanism of a tool.
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이 특허를 인용한 특허 (25) 인용/피인용 타임라인 분석

Drenth, Christopher L., Braking devices for use in drilling operations.
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Drenth, Christopher L., Core barrel assemblies with braking devices.
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Jolicoeur, Martin; Carriere, Jacques, Core barrel assembly including a valve.
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Drenth, Christopher L., Core barrel assembly with tapered design.
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Drenth, Christopher L., Core barrel head assembly with axial groove.
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Drenth, Christopher L., Core barrel head assembly with tapered design.
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Drenth, Christopher L., Core barrel latch body.
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Drenth, Christopher L., Core barrel latch body with axial grooves.
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Drenth, Christopher L., Core barrel retracting case.
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Drenth, Christopher L., Core barrel sleeve with axial grooves.
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Drenth, Christopher L., Core drilling tools with external fluid pathways.
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Drenth, Christopher L., Core drilling tools with external fluid pathways.
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Drenth, Christopher L.; Iondov, George; Ibrahim, George, Core drilling tools with retractably lockable driven latch mechanisms.
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Drenth, Christopher L.; Iondov, George; Ibrahim, George, Core drilling tools with retractably lockable driven latch mechanisms.
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Muntz, Charles Ernest; Drenth, Christopher L.; Iondov, George, Core drilling tools with retractably lockable driven latch mechanisms.
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Drenth, Christopher L.; Iondov, George; Ibrahim, George, Driven latch mechanism.
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Drenth, Christopher L.; Iondov, George; Ibrahim, George, Driven latch mechanism.
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Kinsella, Douglas, High pressure coring assembly and method.
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Drenth, Chris Lloyd, High productivity core drilling system.
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Drenth, Christopher L., High productivity core drilling system.
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Drenth, Christopher L., Latch body.
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Drenth, Christopher L., Latch body.
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Drenth, Christopher L., Latch body.
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Drenth, Christopher L., Methods of braking core barrel assemblies.
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Iondov, George, Up-hole bushing and core barrel head assembly comprising same.
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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] Inner core barrel head assembly for core tube within a drill string 원문보기

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이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

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[미국특허] Inner core barrel head assembly for core tube within a drill string 원문보기

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이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

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