Tools for treating subterranean wells

Details Tools for treating subterranean wells Tools for treating subterranean wells

E - Fixed Constructions

21

B

166/65

E21B 33/126 (2006.01) E21B 23/00 (2006.01) E21B 33/124 (2006.01) E21B 34/12 (2006.01)

Patent

CA 1315194

TOOL FOR TREATING SUBTERRANEAN WELLS ABSTRACT OF THE DISCLOSURE A method and apparatus for treating subterranean wells includes a tool supported on a one-piece support tube which operates to raise and lower the tool in the well to a position where well treatment is required. The tool provides inflatable packers and a selector valve operable in a first position to inflate or deflate the packers, in a second position to circulate fluid to spot treatment fluid at the tool, and a third position for injecting treatment fluid into the strata isolated from the remainder of the well by the packers. The tool provides a J-lock system and a time delay dashpot which cooperate to permit an operator at the well head to selectively operate the valve between the three positions solely by adjusting the weight on the support tube at the well head.

601032

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