[특허]Internal blow out preventer

National Oilwell Norway AS

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Internal blow out preventer

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-033/06 E21B-021/10
미국특허분류(USC)	137/614.17; 137/614.16; 137/315.02
출원번호	US-0521564 (2011-01-10)
등록번호	US-8950430 (2015-02-10)
우선권정보	NO-20100037 (2010-01-11)
국제출원번호	PCT/NO2011/000010 (2011-01-10)
§371/§102 date	20120827 (20120827)
국제공개번호	WO2011/084072 (2011-07-14)
발명자 / 주소	Kukielka, Slawomir
출원인 / 주소	National Oilwell Norway AS
대리인 / 주소	Conley Rose, P.C.
인용정보	피인용 횟수 : 1 인용 특허 : 4

초록

An internal blow out preventer for use in a drill string, comprising a housing having an outer valve closure element and where the outer valve closure element is configured to be moved between an open and a closed position, wherein the outer valve closure element is provided with an inner valve closure element that is configured to be moved between an open and a closed position inside the outer valve closure element.

대표
청구항
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1. An internal blow out preventer comprising: a housing having a central axis;an outer valve closure element rotatably disposed in the housing, wherein the outer valve closure element is configured to move between an open and a closed position;an inner valve closure element rotatably disposed within the outer valve closure element, wherein the inner valve closure element slidingly engages the outer valve closure element and is configured to move between an open and a closed position inside the outer valve closure element; anda ring coaxially disposed in the housing axially adjacent the outer valve closure element, wherein the ring includes an annular sealing surface that slidingly engages the outer valve closure member and is configured to seal against the outer valve closure element. 2. The internal blow out preventer of claim 1, wherein a flow area of a valve opening of the inner valve closure element is substantially the same size as a flow area of a valve opening of the outer valve closure element. 3. The internal blow out preventer of claim 1, wherein the outer valve closure element is separable into a first valve segment and a second valve segment. 4. The internal blow out preventer of claim 1, further comprising: a first valve segment, a second valve segment and an interface therebetween, wherein the interface is positioned so as to be out of contact with one or more seals during movement between the open and closed position. 5. The internal blow out preventer of claim 1, wherein the inner valve closure element has a spherical outer surface. 6. The internal blow out preventer of claim 1, wherein the inner valve closure element has a cylindrical outer surface. 7. The internal blow out preventer of claim 1, wherein the outer valve closure element and the inner valve closure element are rotatable about a common axis of rotation. 8. The internal blow out preventer of claim 1, wherein the outer valve closure element includes a seal configured to seal against the inner valve closure element. 9. The internal blow out preventer of claim 1, wherein the internal blow out preventer has an open configuration with the inner valve closure element in the open position and the outer valve closure element in the open position. 10. The internal blow out preventer of claim 1, wherein the internal blow out preventer has a mud saver configuration with the inner valve closure element in the closed position and the outer valve closure element in the open position. 11. The internal blow out preventer of claim 1, wherein the internal blow out preventer has a blow out preventer configuration with the inner valve closure element in the open position and the outer valve closure element in the closed position. 12. The internal blow out preventer of claim 1, wherein in the open configuration the internal blow out preventer is configured to allow for the flowing of a fluid between a first end of the housing and a second end of the housing. 13. The internal blowout of claim 10, wherein in the mud saver configuration the internal blow out preventer is configured to prevent the flowing of a fluid between a first end of the housing and a second end of the housing. 14. The internal blow out preventer of claim 11, wherein in the blow out preventer configuration the internal blow out preventer is configured to shut off the passage of a fluid within a drill string coupled to the internal blow out preventer. 15. The internal blow out preventer of claim 1, further comprising: an inner valve seal disposed inside the outer valve closure element, wherein the inner valve seal is configured to prevent fluid from passing between the outer valve closure element and the inner valve closure element. 16. An internal blow out preventer comprising: a housing having a first end, a second end and a central bore extending between the first end and the second end along a longitudinal axis of the housing;an outer valve member movably disposed within the housing, wherein the outer valve member has a bore extending therethrough and an axis of rotation;an inner valve member movably disposed within and slidingly engaging the outer valve member, wherein the inner valve member has a bore extending therethrough and an axis of rotation coaxially aligned with the axis of rotation of the outer valve member; anda first ring disposed within the housing, wherein the first ring sealingly engages the outer valve member and is coaxially aligned with the longitudinal axis of the housing. 17. The internal blow out preventer of claim 16, wherein the inner valve member and the outer valve member are positioned such that the axis of rotation of the inner valve member and the axis of rotation of the outer valve member are perpendicular to the longitudinal axis of the housing. 18. The internal blow out preventer of claim 16, wherein the outer valve member is configured to rotate about its axis of rotation between a closed position and an open position. 19. The internal blow out preventer of claim 18, wherein the inner valve member is configured to rotate about its axis of rotation between a closed position and an open position. 20. The internal blow out preventer of claim 19, wherein when the outer valve member is in the open position and the inner valve member is in the open position, a fluid flowpath is provided between the first end and the second end of the housing. 21. The internal blow out preventer of claim 16, further comprising a second ring disposed within the housing axially displaced from the first ring, wherein the second ring sealingly engages the outer valve member and has a central bore coaxially aligned with the central bore of the housing. 22. The internal blow out preventer of claim 16, further comprising one or more seals disposed on an inner surface of the outer valve member, wherein the seals are in sealing engagement with an outer surface of the inner valve member. 23. The internal blow out preventer of claim 19, further comprising: a first valve segment, a second valve segment and an interface therebetween, wherein the interface is positioned so as to be out of contact with one or more seals during movement between the open and closed position.

인용문헌 (4)

이 특허를 인용한 특허 (1)

Robic, Bernard, Constant-volume combustion (CVC) chamber for an aircraft turbine engine including an intake/exhaust valve having a spherical plug.

IPC 상위 출원인

내보내기

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연합인증

특허 상세정보

Internal blow out preventer

초록

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청구항
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인용문헌 (4)

이 특허를 인용한 특허 (1)

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특허 상세정보

Internal blow out preventer

초록

대표청구항 ▼

인용문헌 (4)

이 특허를 인용한 특허 (1)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

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