Linear indexing apparatus and methods of using same

Details Linear indexing apparatus and methods of using same Linear indexing apparatus and methods of using same

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 23/04 (2006.01) E21B 33/12 (2006.01) E21B 33/134 (2006.01) E21B 34/06 (2006.01) E21B 34/10 (2006.01)

Patent

CA 2190929

A linear indexing apparatus and associated methods of using same provide convenient operation of tools in a subterranean wellbore. In a preferred embodiment, a linear indexing apparatus has an outer tubular housing and a tubular mandrel axially slidably disposed within the housing. Two sets of slips are utilized to incrementally displace the mandrel relative to the housing. A piston associated with one of the sets of slips permits the mandrel to be incrementally indexed in response to a series of repeated applications of a predetermined differential pressure.

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