Crossover tool

Details Crossover tool Crossover tool

E - Fixed Constructions

21

B

166/9

E21B 43/04 (2006.01) E21B 23/00 (2006.01) E21B 33/124 (2006.01) E21B 34/12 (2006.01) E21B 43/14 (2006.01)

Patent

CA 1145663

ABSTRACT A crossover tool for use with concentric tubing strings. The apparatus disclosed provides the ability to treat and/or gravel pack a producing zone in a well, and is particularly suited for use in a multiple-zone well. The crossover tool may be locked in any one of three positions: a circulate mode, a closed test mode, or a closed bypass mode to facilitate movement of the tool within the well bore. All operation of the cross- over tool is effected by reciprocation of the pipe string to which it is attached. Alternative embodiments are also disclosed which dispense with the closed test mode. -59-

362031

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