| 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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| 09/28/1994 | EP0617195A2 Well completion apparatus |
| 09/28/1994 | CN2178277Y Setting or releasing device for well sealing device bottom ring flange |
| 09/27/1994 | US5350024 Drill pipe |
| 09/27/1994 | US5350016 Wellbore anchor |
| 09/27/1994 | US5350013 Mandrel operated torque anchor |
| 09/27/1994 | CA2088757C Anchoring device for tubing string |
| 09/23/1994 | CA2119521A1 Sand screen completion |
| 09/21/1994 | EP0615572A1 Downhole adjustable stabilizer and method |
| 09/21/1994 | CN1092500A Well closing water and oil suction method and equipment |
| 09/20/1994 | US5348492 Bracket and connector for a cable inserted into a pipe for enabling a measurement in the cable |
| 09/20/1994 | US5348096 Anisotropic composite tubular emplacement |
| 09/20/1994 | US5348090 Expanded slip well anchor |
| 09/20/1994 | US5348087 Full bore lock system |
| 09/15/1994 | WO1994020727A1 Guide assembly and method |
| 09/13/1994 | US5346017 Method and apparatus for setting a whipstock |
| 09/13/1994 | US5346016 Apparatus and method for centralizing pipe in a wellbore |
| 09/13/1994 | US5346014 Heat activated ballistic blocker |
| 09/13/1994 | US5346004 Environmentally secure polished rod liner head |
| 09/11/1994 | CA2118673A1 Plug or lock for use in oil field tubular members and an operating system therefor |
| 09/06/1994 | US5343965 Apparatus and methods for horizontal completion of a water well |
| 09/06/1994 | US5343963 Method and apparatus for providing controlled force transference to a wellbore tool |
| 09/06/1994 | US5343956 Coiled tubing set and released resettable inflatable bridge plug |
| 09/06/1994 | US5343954 Apparatus and method of anchoring and releasing from a packer |
| 09/06/1994 | US5343953 Through-tubing recirculating tool assembly for well completions |
| 09/06/1994 | US5343949 Isolation washpipe for earth well completions and method for use in gravel packing a well |
| 08/31/1994 | EP0612370A1 A steerable drilling assembly for mounting on the end of a drill string to drill a borehole in an underground formation |
| 08/23/1994 | US5339914 Adjustable drilling mechanism |
| 08/23/1994 | US5339913 Well orienting tool and method of use |
| 08/18/1994 | WO1994018429A1 Sealing device for sealing of holes in the wall of a pipe in a curved oil well, an anchoring device for the sealing device and a tool for mounting of the sealing device and the anchoring device |
| 08/17/1994 | EP0611085A1 Bore selector for a subsea wellhead |
| 08/17/1994 | EP0610366A1 Gravel-packed pipeline and method and apparatus for installation thereof |
| 08/16/1994 | US5337829 Hydraulic release tool |
| 08/16/1994 | US5337826 Tester valve |
| 08/16/1994 | US5337809 Well casing liner suspension hanger |
| 08/16/1994 | CA2070870C Stop for an oil well swabbing device |
| 08/10/1994 | CA2114784A1 Bore selector |
| 08/09/1994 | US5335737 Retrievable whipstock |
| 08/09/1994 | US5335731 Formation testing apparatus and method |
| 08/09/1994 | US5335724 Directionally oriented slotting method |
| 08/02/1994 | US5333685 Wireline set and tubing retrievable packer |
| 07/26/1994 | US5332045 Apparatus and method for placing and for backwashing well filtration devices in uncased well bores |
| 07/26/1994 | US5332038 Gravel packing system |
| 07/26/1994 | CA2076499C Wireline hydraulic retrieving tool |
| 07/26/1994 | CA1330935C Drill string equipment with a lateral light sleeve using a cable safety anchoring member on a support and method thereof |
| 07/21/1994 | WO1994016192A2 Zone isolation apparatus |
| 07/21/1994 | WO1994016190A1 Method and apparatus for setting a whipstock |
| 07/21/1994 | CA2153889A1 Zone isolation apparatus |
| 07/19/1994 | US5330001 Lead in guide assembly |
| 07/19/1994 | US5330000 Squeeze packer latch |
| 07/13/1994 | CN1025447C Device for anchoring probe in well by spreading mobile anchorage arms |
| 07/12/1994 | US5328180 Rigid clamp |
| 07/12/1994 | US5327975 Tubing anchor catcher with rotating mandrel |
| 07/07/1994 | WO1994015061A1 Apparatus and method of perforating wellbores |
| 07/06/1994 | EP0604526A1 Downhole activated process and apparatus for centralizing pipe in a wellbore |
| 07/05/1994 | US5325917 Short stroke casing valve with positioning and jetting tools therefor |
| 06/28/1994 | US5323853 For use in a well conduit |
| 06/23/1994 | WO1994013928A1 Multi-arm stabilizer for a drilling or boring device |
| 06/23/1994 | WO1994013925A1 A device for drilling holes in the crust of the earth, especially for drilling oil wells |
| 06/21/1994 | CA2009810C Retrievable bridge plug and packer |
| 06/15/1994 | EP0601811A2 Measurement-while-drilling system using mud-pulse valve for data transmission |
| 06/15/1994 | CN2168950Y Holder for well tube |
| 06/14/1994 | US5320183 Locking apparatus for locking a packer setting apparatus and preventing the packer from setting until a predetermined annulus pressure is produced |
| 06/14/1994 | US5320182 Downhole pump |
| 06/14/1994 | US5320176 Well fluid loss plug assembly and method |
| 06/14/1994 | CA2021310C Inflatable straddle packer |
| 06/07/1994 | US5318138 Adjustable stabilizer |
| 06/07/1994 | US5318132 Retrievable whipstock/packer assembly and method of use |
| 06/07/1994 | US5318131 Hydraulically actuated liner hanger arrangement and method |
| 06/07/1994 | US5318130 Selective downhole operating system and method |
| 06/07/1994 | US5318129 Method and device for setting up sondes against the wall of a cased well |
| 06/07/1994 | US5318126 Explosively opened production valve including a frangible breakup element operated by tubing pressure or rathole pressure or both |
| 06/07/1994 | US5318125 Method for continuing measurements after recovery of a measuring tool immobilized in a well |
| 06/07/1994 | US5318121 Method and apparatus for locating and re-entering one or more horizontal wells using whipstock with sealable bores |
| 06/07/1994 | US5318120 Well testing valve |
| 06/07/1994 | US5318117 Non-rotatable, straight pull shearable packer plug |
| 05/31/1994 | US5316087 Pyrotechnic charge powered operating system for downhole tools |
| 05/24/1994 | US5314014 Packer and valve assembly for temporary abandonment of wells |
| 05/17/1994 | US5311952 Apparatus and method for directional drilling with downhole motor on coiled tubing |
| 05/17/1994 | US5311941 Rotation release latch for a wellbore tool |
| 05/11/1994 | WO1994010420A1 Retrievable whipstock/packer assembly and method of use |
| 05/10/1994 | US5310012 Actuating device associated with a drill string and comprising a hydrostatic drilling fluid circuit, actuation method and application thereof |
| 05/10/1994 | US5310001 Method of retrieving a downhole tool utilizing non-rotational workstrings |
| 05/03/1994 | US5307873 Water well lock |
| 04/28/1994 | WO1994009246A1 Wellbore actuating tool with non-explosive power charge ignition |
| 04/28/1994 | WO1994009242A1 Method and apparatus for rotating downhole tool in wellbore |
| 04/28/1994 | CA2117333A1 Wellbore actuating tool with non-explosive power charge ignition |
| 04/27/1994 | EP0594420A1 Adjustable stabilizer for drill string |
| 04/27/1994 | EP0594393A1 Downhole formation testing apparatus |
| 04/26/1994 | US5306750 Polymer containing epoxy compound; storage stability; road paving, roofing |
| 04/26/1994 | US5305830 Method and device for carrying out measurings and/or servicings in a wellbore or a well in the process of being drilled |
| 04/19/1994 | US5303776 Device for a down-hole assembly |
| 04/19/1994 | US5303772 Well completion apparatus |
| 04/13/1994 | EP0592160A1 Setting tool and related method |
| 04/13/1994 | CN1024210C Well remote control signal transmiting method and its receiving device |
| 04/06/1994 | EP0400037B1 T-slot mandrel and kickover tool |
| 04/05/1994 | CA2021518C Liner isolation and well completion system |
| 03/30/1994 | EP0589687A2 Coiled tubing inflatable packer |
| 03/30/1994 | EP0589586A2 Isolation washpipe for earth well completions and method for use in gravel packing a well |
| 03/30/1994 | CN2160013Y Suspending device for under well |
| 03/29/1994 | US5297641 Drilling deviation control tool |