IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0415214
(2009-03-31)
|
등록번호 |
US-8844898
(2014-09-30)
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발명자
/ 주소 |
|
출원인 / 주소 |
- National Oilwell Varco, L.P.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
208 |
초록
▼
A blowout preventer and seal structure for a blowout preventer, the seal structure having a the body with two front faces including a first face and a second face, a projection projecting out from the body, the first face on the projection, the second face in a plane, and the projection with the fir
A blowout preventer and seal structure for a blowout preventer, the seal structure having a the body with two front faces including a first face and a second face, a projection projecting out from the body, the first face on the projection, the second face in a plane, and the projection with the first face projecting out beyond the plane. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
대표청구항
▼
1. A ram for a blowout preventer, the ram comprising: a ram body having a front surface and a plurality of recesses;triangular inserts held by the plurality of recesses for contacting a portion of a tubular adjacent the ram; anda seal structure on the ram body about the triangular inserts, the seal
1. A ram for a blowout preventer, the ram comprising: a ram body having a front surface and a plurality of recesses;triangular inserts held by the plurality of recesses for contacting a portion of a tubular adjacent the ram; anda seal structure on the ram body about the triangular inserts, the seal structure having a first face and a second face, the seal structure having a projection at the first face extending beyond the triangular inserts and a recessed portion at the second face a distance behind a portion of the triangular inserts, the projection comprising a top plate connected to a base and a bottom plate connected to the base, the base on an exterior surface of the projection, the projection sealingly engageable with the recessed portion of the seal structure of an opposing ram. 2. The ram of claim 1, wherein the recessed portion is defined in part by the second face, the second face positioned for sealing contact with the first face of the projection of the opposing ram. 3. The ram of claim 2, further comprising a recess in the ram body, the recessed portion formed by the seal structure disposed in the recess of the ram body. 4. The ram of claim 3 wherein the recess in the ram body is located for receiving the part of the projection of the opposing ram and for supporting said part therein. 5. The ram of claim 4 wherein the recess is sized for sealing contact with said part of the projecting portion of the opposing ram. 6. The ram of claim 1 wherein the top plate has a width and a length, the width at least thirty five percent of the length. 7. The ram of claim 6 wherein the width is about sixty percent of the length. 8. A ram for a blowout preventer, the ram comprising: a ram body having a front surface and a plurality of recesses;triangular inserts held by the plurality of recesses for contacting a portion of a tubular adjacent the ram;a seal structure on the ram body about the triangular inserts, the seal structure having a first face and a second face, the seal structure having a projection at the first face extending beyond the triangular inserts and a recessed portion at the second face a distance behind a portion of the triangular inserts, the projection comprising a top plate connected to a base and a bottom plate connected to the base, the base on an exterior surface of the projection, the projection sealingly engageable with the recess of the seal structure of an opposing ram, the recessed portion defined in part by the second face, the second face positioned for sealing contact with the first face of the projection of the opposing ram; anda recess in the ram body, the recessed portion formed by the seal structure disposed in the recess of the ram body, the recess in the ram body located for receiving part of the projection of the opposing ram and for supporting said part therein. 9. A seal structure for a ram of a blowout preventer, the seal structure comprising: a body having a first face and a second face, and a plurality of recesses;triangular inserts held by the plurality of recesses for contacting a portion of a tubular adjacent the ram; anda projection projecting out from the body about the inserts, the first face on the projection, the second face in a plane, the projection comprising a top plate connected to a base and a bottom plate connected to the base, the base on an exterior surface of the projection, the projection projecting out beyond the plane, the projection extending beyond the triangular inserts and a recessed portion at the second face a distance behind a portion of the triangular inserts, the projection sealingly engageable with the recessed portion of the seal structure of an opposing ram. 10. The seal structure of claim 9, wherein the recessed portion is defined in part by the second face, the second face positioned for sealing contact with the first face of the projection of the opposing ram. 11. The seal structure of claim 10 further comprising a recess in the body, the recessed portion formed by the seal structure disposed in the recess of the body. 12. The seal structure of claim 11 wherein the recess in the ram body is located for receiving part of the projecting portion of the opposing ram and for supporting said part therein, the recess sized for sealing contact with said part of the projecting portion of the opposing ram. 13. The seal structure of claim 9 wherein a width of the top plate is about sixty percent of a length of the top plate. 14. A blowout preventer with two opposing rams, each ram comprising: a ram body having a front surface and a plurality of recesses;triangular inserts held by the plurality of recesses for contacting a portion of a tubular adjacent the ram; anda seal structure on the ram body about the inserts, the seal structure having a first face and a second face, the seal structure having a projection at the first face extending beyond the triangular inserts and a recessed portion at the second face a distance behind a portion of the triangular inserts, the projection comprising a top plate connected to a base and a bottom plate connected to the base, the base on an exterior surface of the projection, the projection sealingly engageable with the recessed portion of the seal structure of an opposing ram. 15. The blowout preventer of claim 14, wherein the recessed portion is defined in part by the second face of the seal structure, the second face positioned for sealing contact with a face of the projection of the opposing ram, the blowout preventer further comprising: a recess in the ram body, the recessed portion formed by a seal structure disposed in the recess of the ram body, the recess in the ram body located for receiving part of a projecting portion of an opposing ram and for supporting said part therein, the recess sized for sealing contact with the part of the projecting portion of the opposing ram. 16. A method for sealing rams of a blowout preventer against a portion of a tubular located between the rams, the method comprising: moving opposing rams of the blowout preventer into contact with the portion of the tubular located between the rams, each ram comprising: a ram body having a front surface and a plurality of recesses;triangular inserts held by the plurality of recesses for contacting a portion of the tubular adjacent the ram; anda seal structure on the ram body about the triangular inserts, the seal structure having a first face and a second face, the seal structure having a projection at the first face extending beyond the triangular inserts and a recessed portion at the second face a distance behind a portion of the triangular inserts, the projection comprising a top plate connected to a base and a bottom plate connected to the base, the base on an exterior surface of the projection, the projection sealingly engageable with the recessed portion of the seal structure of an opposing ram; andmoving the ram so the first face of the ram contacts the second face of the opposing ram.
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