E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/26 (2006.01) E21B 23/00 (2006.01) E21B 33/124 (2006.01)
Patent
CA 2375045
A tubing conveyed multi-position well treating tool having a tubular housing and a tubular inner member which are relatively positionable at "Set", "Treat", "Dump" and "Release" positions actuated by a mechanical indexing mechanism. The indexing mechanism is loaded by a spring, such as a compressed gas spring or mechanical spring, which urges the tubular housing away from the tubing connection of the inner tubular member, thus requiring no set-down forces for tool actuation or indexing. The treating tool is anchored within the well casing by hydraulic pressure actuated buttons, thus eliminating the typical requirement for anchoring actuation by set-down forces. The treating tool is sealed within the casing by pressure energized packers which are activated by the hydraulic pressure of fluid supplied from the tubing. The tool provides a bypass passage to allow communication of the zones above and below the tool while isolating the straddled interval to be treated.
Costley James M.
Eslinger David M.
Hill Stephen D.
Mcgill Howard L.
Sheffield Randolph J.
Schlumberger Canada Limited
Smart & Biggar
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