Stuffing box for a fluid production well, and associated surface assembly
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United States of America Patent
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Jun 28, 2016
Grant Date -
May 2, 2013
app pub date -
Apr 26, 2011
filing date -
Apr 27, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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).
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