Downhole shut-in device for pressure variation testing in gas lift wells
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United States of America Patent
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Issued Date -
Jan 9, 2014
app pub date -
Jun 27, 2013
filing date -
Jun 29, 2012
priority date (Note) -
Abandoned
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Abstract
The device is based on the principle of downhole shut-in of oil producing wells that do not flow to surface self-powered but require the injection of gas to lighten the fluid column and thus enable the well to produce. This downhole shut-in device comprises a check valve, an anchoring system, a seal system; an untethering system, a shock absorber and a sleeve for the protection of pressure and temperature memory probes.
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