发明名称 |
STUFFING BOX FOR A FLUID PRODUCTION WELL, AND ASSOCIATED SURFACE ASSEMBLY |
摘要 |
This stuffing box (46) defines a circulation passage (66) of a cable working line (28), a packer (70), and a back-pressure resistant valve (74). The passage (66) extends between an upstream end (62) of the stuffing box (46), intended to be connected to a well, and a downstream end (64). The back-pressure resistant valve (74) is arranged in the passage (66) to prevent, in case of break of the line (28), the back-pressure of a fluid from the upstream end (62) towards the downstream end (64). The or each packer (70) is situated between the upstream end (62) of the stuffing box (46) and the back-pressure resistant valve (74). No packer (70) is arranged between the back-pressure resistant valve (74) and the downstream end (64). |
申请公布号 |
WO2011134637(A1) |
申请公布日期 |
2011.11.03 |
申请号 |
WO2011EP02079 |
申请日期 |
2011.04.26 |
申请人 |
GEOSERVICES EQUIPEMENTS;BERNARD, YVON;FOUCHER, PIERRE-ARNAUD;GIRARDI, FRANCOIS |
发明人 |
BERNARD, YVON;FOUCHER, PIERRE-ARNAUD;GIRARDI, FRANCOIS |
分类号 |
E21B33/072;E21B33/08 |
主分类号 |
E21B33/072 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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