| Patents for E21B 19 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (17,198) |
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| 06/22/1989 | DE3827865C1 Roof-bolt drilling apparatus movable on support sections forming running rails |
| 06/13/1989 | US4838522 Deepwater subsea lowering/lifting system |
| 06/13/1989 | US4838362 Apparatus for manipulating a tool |
| 06/06/1989 | US4836300 Method of performing drilling operations from a derrick |
| 06/06/1989 | US4836064 Jaws for power tongs and back-up units |
| 06/06/1989 | CA1255290A1 Transfer arm positioning system |
| 06/06/1989 | CA1255079A1 Method and apparatus for analysis of torque applied to a joint |
| 05/31/1989 | EP0318343A2 Methods and apparatus for safely handling radioactive sources in measuring-while-drilling tools |
| 05/30/1989 | US4834604 Pipe moving apparatus and method |
| 05/30/1989 | US4834441 Drill pipe handling device |
| 05/30/1989 | US4834195 Drill magazine |
| 05/30/1989 | CA1254878A1 Bearing arrangement for a feeding device for a drilling machine |
| 05/24/1989 | CN2038148U Base frame of ensemble lift drill |
| 05/24/1989 | CN2038147U Clamp apparatus for oil pumping rod |
| 05/23/1989 | US4832552 Method and apparatus for rotary power driven swivel drilling |
| 05/18/1989 | WO1989004418A1 Self-propelled subsoil penetrating tool system |
| 05/18/1989 | DE3738116A1 Drill-rod magazine with automated feed and removal of the drill rods for rock-drilling machines |
| 05/16/1989 | US4830336 Arrangement in a hoisting device, especially for a derrick |
| 05/16/1989 | US4830121 Break-out joint with selective disabler |
| 05/16/1989 | US4830119 Top head drive cooling system |
| 05/16/1989 | CA1254194A1 Well pipe handling machine |
| 05/09/1989 | US4827808 Rotor assembly for power tong |
| 05/09/1989 | CA1253704A1 Apparatus for storing a concrete feeding hose in a rock bolting device |
| 05/03/1989 | DE3734512A1 Jacking apparatus for the pipe jacking method |
| 05/02/1989 | US4826698 Rotary feeder |
| 04/27/1989 | DE3734513A1 Clamping head for the drive-transmission clamping of the pipe string in drilling work |
| 04/26/1989 | EP0312926A1 Rock drill |
| 04/25/1989 | US4823919 Slip construction for supporting tubular members |
| 04/25/1989 | CA1252996A1 Riser position indication apparatus |
| 04/20/1989 | WO1989003470A1 A gripping and rotating tong device |
| 04/18/1989 | US4822230 Pipe handling apparatus |
| 04/18/1989 | US4821814 Top head drive assembly for earth drilling machine and components thereof |
| 04/12/1989 | EP0311455A1 Compact casing tongs for use on top head drive earth drilling machine |
| 04/11/1989 | US4819730 Development drilling system |
| 04/06/1989 | WO1989002973A1 Automatic drilling system |
| 04/04/1989 | CA1251926A1 Method and device for the determination of the screwing torque of a tubular, conically threaded, joint having an engagement stop, useable in the oil industry |
| 03/28/1989 | US4815546 Top head drive assembly with axially movable quill |
| 03/23/1989 | WO1989002346A1 Compact high-torque apparatus and method for rotating pipe |
| 03/23/1989 | DE3829909A1 Clamping-claw arrangement for casing tongs or the like |
| 03/21/1989 | US4813499 For the drilling of a vertical concrete structure |
| 03/21/1989 | US4813498 Use in a derrick |
| 03/21/1989 | US4813493 Hydraulic top drive for wells |
| 03/15/1989 | EP0307124A1 Line reeving system for earth drilling machine |
| 03/15/1989 | CN2034195U Composite lever type seat clamp device |
| 03/15/1989 | CN1031741A Lifting apparatus for drilling |
| 03/14/1989 | US4811635 Power tong improvement |
| 03/09/1989 | DE3802443C1 Rotary rock-drilling machine with device for releasing stuck drill rods |
| 03/07/1989 | US4809792 Support system for a top driven drilling unit |
| 03/07/1989 | US4809788 Mast assembly for percussive and auger drilling |
| 02/28/1989 | US4808035 Pneumatic riser tensioner |
| 02/28/1989 | US4808034 System and method for securing a marine riser to a floating structure |
| 02/28/1989 | CA1250569A1 Well pipe stabbing and back-up apparatus |
| 02/08/1989 | CN2032245U Lift ring for pumping rods |
| 02/07/1989 | CA1249773A1 Stand jumping and stabbing guide device and method |
| 01/31/1989 | US4800968 Well apparatus with tubular elevator tilt and indexing apparatus and methods of their use |
| 01/31/1989 | CA1249582A1 Automated pipe equipment system |
| 01/31/1989 | CA1249530A1 Hydraulic disk brake having a braking torque-to- hydraulic force converter |
| 01/25/1989 | EP0300986A1 Rock drilling rig |
| 01/24/1989 | US4799827 Modular riser tensioner incorporating integral hydraulic cylinder accumulator units |
| 01/24/1989 | CA1249322A1 Well treating process for installing a cable bundle containing strands of changing diameter |
| 01/24/1989 | CA1249219A1 Servicing device for oil well rod pumps |
| 01/19/1989 | DE3721448A1 Casing adaptor |
| 01/18/1989 | EP0299624A2 Apparatus and method for installing a conduit within an arcuate bore |
| 01/17/1989 | CA1248938A1 Spring-loaded suspension system for augers and screw anchors |
| 01/17/1989 | CA1248937A1 Rock drill with tunnel profile control system |
| 01/10/1989 | US4797035 Method of installing a template on the seafloor |
| 01/10/1989 | US4796863 Dual cluster crown block |
| 01/03/1989 | US4794791 Method and device for making measurements characterizing geological formations, in a horizontal borehole formed from an underground way |
| 12/28/1988 | CA1247590A1 Oil well drilling rig assembly and apparatus therefor |
| 12/27/1988 | US4793754 Process for locking two screwed elements and elements for carrying out this process |
| 12/27/1988 | US4793422 Articulated elevator links for top drive drill rig |
| 12/27/1988 | US4793410 Load detection and indicator apparatus for well tubing or the like |
| 12/20/1988 | US4792172 Gripping and lifting clamp for pipes and cylindrical objects of large dimensions |
| 12/20/1988 | US4791999 Well drilling apparatus |
| 12/20/1988 | US4791997 In a drilling rig |
| 12/07/1988 | EP0293379A1 An apparatus in rock drilling machines or the like. |
| 12/06/1988 | US4789136 Method and cable anchor assembly for anchoring plastic coated rope |
| 12/06/1988 | CA1246048A1 Top drive drilling systems |
| 11/29/1988 | US4787778 Method and apparatus for tensioning a riser |
| 11/29/1988 | CA1245622A1 Feed beam for a rock drill |
| 11/29/1988 | CA1245621A1 Apparatus for use in drilling |
| 11/22/1988 | US4785892 Pile driver, pile drawer and/or drilling machine |
| 11/17/1988 | WO1988008069A3 Apparatus for use in drilling |
| 11/15/1988 | US4784230 For drilling an underground pilot bore hole |
| 11/15/1988 | US4784221 Wellpoint system and reel |
| 11/15/1988 | CA1244856A1 Robot arm |
| 11/08/1988 | CA1244401A1 Drill extractor |
| 11/02/1988 | EP0288527A1 Earth boring apparatus |
| 11/01/1988 | US4781359 Sub assembly for a swivel |
| 10/25/1988 | CA1243665A1 Drill strings, essentially for oil and gas well drilling, with receiving sections for clamping jaws |
| 10/25/1988 | CA1243664A1 Top head drive well drilling apparatus with stabbing guide |
| 10/20/1988 | WO1988008069A2 Apparatus for use in drilling |
| 10/12/1988 | EP0286302A2 Top head drive assembly with axially movable quill |
| 10/12/1988 | CN87217137U Casing device with self adjustable pressure of embracing pillar |
| 10/11/1988 | US4776407 Clamping attachment to a device for driving rod elements of low rigidity into the ground |
| 10/11/1988 | US4776243 For screwing drilling industry sucker rods |
| 10/05/1988 | EP0285386A2 Internal wrench for a top head drive assembly |
| 10/05/1988 | EP0285385A2 Top head drive assembly for earth drilling machine and components thereof |
| 10/04/1988 | US4774861 Drill pipe spinner |
| 10/04/1988 | US4774860 Tong and belt apparatus for a tong |