Downhole tools
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United States of America Patent
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N/A
Issued Date -
Jun 17, 2010
app pub date -
Nov 19, 2009
filing date -
Nov 21, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fluid operated apparatus in the form of a flow cap, is mounted on an end of a downhole tool or sub, which itself has a screw thread fitting to a further tool, sub or tubular. The cap provides a number of fluid flow channels arranged in a spiral pattern upon the outer surface. The handedness of the channels matches the handedness of the screw thread fitting so that fluid flow from ports in the tool or sub, acts to tighten the screw thread fitting. A water injection valve including a flow cap is described.
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