Plunger enhanced chamber lift for well installations
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United States of America Patent
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Nov 22, 2005
Issued Date -
N/A
app pub date -
Sep 1, 2004
filing date -
May 1, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is addressed to a method of retro-fitting a well installation to reconfigure it to provide plunger enhanced chamber lift. The method comprises the steps of providing a reel-carried supply of coil tubing, a primary seating nipple assembly, a primary seal assembly, a primary seal, a receiver housing, and a secondary seating nipple. The receiver housing is connected with the coil tubing, and the coiling tube snubbed until the primary seal engages the primary seating nipple. A wire installable and retrievable sealing plug is provided and installed within the receiver housing. The wellhead is modified to supply gas under pressure into the secondary annulus and the sealing plug is removed. A check valve assembly is provided and positioned within the coiling tube such that the secondary seal engages the secondary seating nipple. A reciprocally moveable plunger is provided and installed within the coiling tube.
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