| 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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| 04/09/1985 | US4509593 Downhole mobility and propulsion apparatus |
| 04/03/1985 | EP0136146A2 Annulus pressure responsive downhole tool |
| 04/02/1985 | US4508167 Selective casing bore receptacle |
| 04/02/1985 | US4508166 Subsurface safety system |
| 04/02/1985 | US4508165 Kickover tool |
| 03/26/1985 | US4506731 Apparatus for placement and retrieval of downhole gauges |
| 03/20/1985 | EP0134734A1 Oil well logging method and apparatus |
| 03/19/1985 | US4505331 Side pocket mandrel |
| 03/12/1985 | CA1183772A1 Self powered downhole tool anchor |
| 03/06/1985 | EP0034608B1 Self-discriminating side pocket mandrel and method of manufacturing same |
| 03/05/1985 | US4502542 Well system |
| 02/26/1985 | US4501337 Apparatus for forming and using a bore hole |
| 02/26/1985 | US4501323 Method and apparatus for monitoring the corrosive effects of well fluids |
| 02/13/1985 | EP0133086A1 Well probe anchoring device with expansible pivoting arms |
| 02/12/1985 | US4498534 Liner hanger assembly |
| 02/12/1985 | US4498533 Keyhole mandrel with insert pocket |
| 02/12/1985 | US4498532 Pump down tool and check valve |
| 02/12/1985 | CA1182442A1 Method and apparatus for setting and orienting a whipstock in a well conduit |
| 02/05/1985 | US4497371 Setting tool and retrievable landing assembly |
| 02/05/1985 | US4497368 Hanger mechanism |
| 02/05/1985 | US4497367 Liner hanger |
| 02/05/1985 | CA1182104A1 Method and apparatus for forming and using a bore hole |
| 02/05/1985 | CA1182042A1 Bridge plug |
| 02/05/1985 | CA1182041A1 Well tool |
| 01/30/1985 | EP0132423A1 Borehole logging and work-over method and apparatus |
| 01/29/1985 | US4496000 Method of and apparatus for setting a mechanical liner hanger by right-hand rotation |
| 01/29/1985 | US4495992 Hydraulic logging technique for inverted oil wells |
| 01/29/1985 | US4495808 Parachute profiler |
| 01/29/1985 | US4495804 Method of and apparatus for mining analysis |
| 01/22/1985 | US4494608 Well injection system |
| 01/16/1985 | EP0131517A2 Arm mechanism supporting a borehole logging shoe |
| 01/15/1985 | US4493374 Hydraulic setting tool |
| 01/15/1985 | CA1181003A1 Combination release mechanism for downhole well apparatus |
| 01/15/1985 | CA1181002A1 Stinger assembly for oil well tool |
| 01/08/1985 | CA1180692A1 Surface controlled blade stabilizer |
| 01/08/1985 | CA1180594A1 Moineau pump |
| 01/01/1985 | US4491187 Surface controlled auxiliary blade stabilizer |
| 12/25/1984 | US4489781 Setting tool and right-hand set mechanical liner hanger |
| 12/18/1984 | US4488597 For use with a well-logging tool |
| 12/18/1984 | US4488596 Locking apparatus for use in a subterranean well |
| 12/18/1984 | US4488595 Well tool having a slip assembly |
| 12/04/1984 | US4485870 Method and apparatus for conducting wireline operations in a borehole |
| 11/27/1984 | US4484633 Safety joint |
| 11/27/1984 | US4484628 Method and apparatus for conducting wireline operations in a borehole |
| 11/27/1984 | CA1178534A1 Slack adjustment for slip system in downhole well apparatus |
| 11/21/1984 | EP0125993A1 Centralizer for a tool in a cased well, especially for deviated wells |
| 11/20/1984 | US4483397 Method and apparatus for monitoring well tubing fluid |
| 11/13/1984 | US4482014 In a well tool for use in a well bore |
| 11/13/1984 | US4482013 Mechanical wireline borehole packer |
| 11/06/1984 | US4480697 Method and apparatus for converting an oil well to a well with effluent raising by gas-lift |
| 11/06/1984 | US4480688 Method and bridge plug for sealing off a well |
| 11/06/1984 | US4480687 Side pocket mandrel system for dual chemical injection |
| 11/06/1984 | US4480686 Gas lift mandrel |
| 11/06/1984 | CA1177389A1 Releasable latching apparatus |
| 10/30/1984 | US4479548 Setting tool adapter kit |
| 10/30/1984 | US4479539 Downhole lock system |
| 10/30/1984 | CA1176975A1 Kickover tool |
| 10/24/1984 | EP0122839A1 Method and apparatus for conducting logging and/or work-over operations in a borehole |
| 10/23/1984 | US4478279 Retrievable inside blowout preventer valve apparatus |
| 10/16/1984 | US4477104 Releasable latching apparatus |
| 10/03/1984 | EP0120622A2 Placement and retrieval of downhole gauges |
| 10/02/1984 | US4474239 Sand placement |
| 09/26/1984 | EP0119872A1 Method and apparatus for conducting wireline operations in a borehole |
| 09/18/1984 | CA1174591A1 Latch for well tool |
| 09/11/1984 | CA1174073A1 Methods and apparatus for well investigation and development |
| 09/04/1984 | US4469173 Expendable plug assembly |
| 08/14/1984 | US4465132 Releasable well tool stopping devices and systems |
| 08/07/1984 | CA1172162A1 Pipe wipers and cups therefor |
| 07/31/1984 | US4462465 Controlling injection of fluids into wells |
| 07/17/1984 | US4460293 System for lining a bore hole |
| 07/10/1984 | US4458762 For use in a testing string in a well bore |
| 07/03/1984 | US4457370 Method and device for effecting, by means of specialized tools, such operations as measurements in highly inclined to the vertical or horizontal well portions |
| 07/03/1984 | US4457368 Shearable no go insert for a well lock |
| 06/27/1984 | EP0112189A2 Method and device for coupling a seismic detector to a bore hole wall |
| 06/26/1984 | CA1169758A1 Cement retainer and setting tool assembly |
| 06/19/1984 | US4454913 Safety valve system with retrievable equalizing feature |
| 06/19/1984 | CA1169355A1 Flow control apparatus for wells |
| 06/05/1984 | US4452478 Nuclear waste storage process and system |
| 06/05/1984 | US4452472 Tubular safety joint for drill strings |
| 06/05/1984 | US4452305 Kickover tool with pivot arm retraction means |
| 05/29/1984 | US4450907 Cleaning system for packer removal |
| 05/22/1984 | CA1167761A1 Retrievable packer apparatus |
| 04/26/1984 | WO1984001600A1 Retrievable inside blowout preventer valve apparatus |
| 04/25/1984 | EP0106525A1 Method of producing side-pocket mandrels free of welds |
| 04/24/1984 | US4444252 Slack adjustment for slip system in downhole well apparatus |
| 04/17/1984 | US4442903 System for installing continuous anode in deep bore hole |
| 04/17/1984 | US4442893 Kickover tool |
| 04/10/1984 | US4441560 Setting tool |
| 04/10/1984 | US4441558 Valve |
| 04/10/1984 | US4441552 Hydraulic setting tool with flapper valve |
| 04/10/1984 | CA1165227A1 Well tool |
| 04/10/1984 | CA1165226A1 Well system |
| 04/04/1984 | EP0104993A2 Full-bore drill stem testing apparatus with surface pressure readout |
| 04/04/1984 | EP0104218A1 Robot |
| 04/04/1984 | EP0046801A4 Packer arrangements for oil wells and the like. |
| 04/03/1984 | US4440233 Setting tool |
| 04/03/1984 | US4440222 Side pocket mandrel with improved orienting means |
| 04/03/1984 | US4440218 Slurry up particulate placement tool |
| 04/03/1984 | CA1164795A1 Well tool |
| 04/03/1984 | CA1164670A1 Mine shaft liner |