Wireline shifting tool apparatus and method

Details Wireline shifting tool apparatus and method Wireline shifting tool apparatus and method

E - Fixed Constructions

21

B

33/186, 166/62

E21B 43/12 (2006.01) E21B 17/00 (2006.01) E21B 34/06 (2006.01) E21B 34/14 (2006.01) E21B 47/08 (2006.01) E21B 47/09 (2006.01)

Patent

CA 1084836

ABSTRACT OF THE DISCLOSURE An improved wireline borehole shifting comprises upwardly extending upper dog means and downwardly extending lower means, with the upper dog means being extendable and retractable responsive to slack or tension, respectively, in the wireline; with the lower dog means being extendable and retractable and longitudinally movable relative to the upper dog means responsive to movement of a reciprocator shaft and power means that is disposed within the tool body beneath the lower dog means and with the lower dog means being at all times movable radially inwardly against a spring bias force. Also disclosed is an arrangement utilizing the shifting tool for running a caliper log of the borehole conduit diameter profile for a selected region, with the shifting tool lower dog means acting as the caliper sensing means. Further disclosed are unique methods for utilizing the shifting tool to perform shifting operations on devices that are dis- posed in wellbore conduits. Additionally disclosed are unique methods utilizing the shifting tool to initiate shifting movement in such devices.

303818

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