Wells – Expansible anchor or casing – Expansible means translated by wedge or cam
Patent
1988-03-14
1989-07-04
Neuder, William P.
Wells
Expansible anchor or casing
Expansible means translated by wedge or cam
166156, 166382, E21B 2302
Patent
active
048441600
ABSTRACT:
A well production system utilizing a submersible pump in which a parking mandrel is slidable around a flexible line and connected to the top of a string of test tools carried by the line. When the tools and mandrel are lowered into the well, the mandrel locks in a landing nipple in tubing below the pump. Pull on the line operates the mandrel and disconnects the tools to be lowered on the line through the mandrel to a deeper depth at which the well may be tested. The parking mandrel includes a pressure operated grease injector section. The well pump may be operated while testing the well increasing pressure sufficiently to operate the grease injector and seal the parking mandrel around the line. After well testing is completed, the line and tools are raised back to the parking mandrel and reconnected to the mandrel by pulling on the line. The parking mandrel may now be unlocked from the landing nipple for return to surface by lowering the line and then pulling the line again. The parking mandrel may be locked from the landing nipple at any time after locking in the nipple by pulling on the line.
REFERENCES:
patent: 3727693 (1973-04-01), Tausch et al.
patent: 3771597 (1973-11-01), McGowen, Jr.
patent: 4398601 (1983-08-01), Schwendemann et al.
patent: 4545434 (1985-10-01), Higgins
patent: 4583591 (1986-04-01), Krause, Jr. et al.
patent: 4583592 (1986-04-01), Gazda et al.
patent: 4745974 (1988-05-01), Higgins
Otis, "Subsurface Flow Control Completion Equipment", 1985.
Cox Roland O.
Neuder William P.
Otis Engineering Corporation
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