Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation
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United States of America Patent
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Jun 21, 2011
Grant Date -
Jul 29, 2010
app pub date -
Apr 1, 2010
filing date -
Jun 8, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A kit for converting an existing wireline retrievable surface controlled subsurface safety valve (170, 270, 370) into a bypass passageway apparatus (100) allowing the injection of production-enhancing fluid into a wellbore while maintaining the operation of the closure member (374). Bypass passageway (280) can extend between upper (260) and lower (275) adapters external to the existing wireline retrievable surface controlled subsurface safety valve (270) to allow fluid injection bypass thereof. Conversion kit can include a tubing string hanger to suspend a velocity tubing string (407, 507), a gas lift valve (475) for gas lift operations, a locking mandrel (220), and/or a spacer tube (240).
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