Wells – Processes – Placing or shifting well part
Patent
1995-01-31
1997-04-01
Dang, Hoang C.
Wells
Processes
Placing or shifting well part
166187, E21B 33127
Patent
active
056157410
ABSTRACT:
An inflation tool for an external casing packer (ECP) is provided. It allows isolation of each ECP and inflation with mud, cement, or other fluids. The opening for the ECP is isolated by appropriate seals, while a passage in the inflation tool is closed off by a plug which allows internal fluid pressure build-up. A sliding sleeve valve is responsive to built-up pressure and opens to allow access to the ECP. Upon complete inflation of the ECP, the pressure applied is removed, allowing the sleeve to close and the pressure between the seals surrounding the opening to the ECP is equalized with the wellbore. Excess mud or other inflation material can be reversed out by a bypass feature around the plug. A pressure-relief feature in the inflation tool allows further pressure equalization for the string, which was used to run the tool in the hole, to facilitate its removal.
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Horizontal Inflation Tool (HIT), Long, Cement Inflatable Formation Packers; CTC International HIT Assembly Manual, not dated.
Baker Hughes Incorporated
Dang Hoang C.
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