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| Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712) |
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| 05/18/1976 | US3957115 Method and apparatus for treating wells | | 05/18/1976 | US3957114 Well treating method using an indexing automatic fill-up float valve | | 04/20/1976 | US3951211 Method for selectively retrieving a plurality of well packers | | 04/13/1976 | US3950021 Pulling and running tool | | 04/06/1976 | US3948321 Liner and reinforcing swage for conduit in a wellbore and method and apparatus for setting same | | 03/30/1976 | US3946807 Well tools | | 03/09/1976 | US3942833 Running tools | | 02/24/1976 | US3939705 Removable downhole measuring instruments with electrical connection to surface | | 02/10/1976 | US3937279 Retractable landing shoulder for downhole devices | | 02/10/1976 | US3937278 Self-propelling apparatus for well logging tools | | 01/27/1976 | US3934652 Apparatus and method for cementing well liners | | 01/27/1976 | US3934648 Well tubing system with orienting coupling means |
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