| 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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| 02/21/1990 | CN2053236U Clamp of jaw of power tongs for oil sucker rod |
| 02/21/1990 | CN1039870A Arrangement for operating hydraulic actuating means in rock boom and like boom construction |
| 02/21/1990 | CN1039866A Joining of hollow drill rads |
| 02/21/1990 | CN1006918B Technology for installing bunched cables having strands with different diameter into a well |
| 02/20/1990 | US4901805 Unit for borehole running and pulling operations |
| 02/20/1990 | CA1265998A1 Injector for coupled pipe |
| 02/14/1990 | CN1039637A Apparatus for clamping drill rods |
| 02/13/1990 | US4899832 Modular well drilling apparatus and methods |
| 02/13/1990 | US4899823 Method and apparatus for running coiled tubing in subsea wells |
| 02/13/1990 | US4899816 Apparatus for guiding wireline |
| 02/13/1990 | US4899682 Catamaran-type semisubmersible drilling vessel for offshore drilling |
| 02/07/1990 | CN1039465A Method of and arrangement for drilling hole in rock |
| 02/06/1990 | US4898251 Earth boring apparatus |
| 02/06/1990 | US4898238 Pipe supporting device |
| 02/01/1990 | DE3924469A1 Anordnung zur betaetigung hydraulischer bedienungsgeraete eines gesteinsbohrarms oder einer aehnlichen bohrarmkonstruktion Arrangement for actuating hydraulic equipment at a user-gesteinsbohrarms or similar bohrarmkonstruktion |
| 01/31/1990 | EP0353181A2 Drill pipe connection |
| 01/31/1990 | EP0353152A1 Device for withdrawing dug material for making deep trenches |
| 01/30/1990 | US4897009 Drill pipe handling apparatus |
| 01/24/1990 | CN2051666U Hydaulic fastening/releasing device of drilling rig |
| 01/23/1990 | US4895056 Tong and belt apparatus for a tong |
| 01/16/1990 | US4893860 Device for gripping and suspending drill pipe stand |
| 01/09/1990 | US4892444 Resilient unit |
| 01/09/1990 | US4892161 Rotary rock drilling machine |
| 01/09/1990 | US4892160 Drill pipe transfer arm for angle drilling |
| 01/09/1990 | CA1264287A1 Guide table for submarine production riser |
| 01/03/1990 | EP0349267A1 Apparatus for tensioning a riser |
| 01/03/1990 | CN2050468U Laying and drawing huide arrangement for two-stories drilling stem in the derrick |
| 01/02/1990 | US4890681 Method and apparatus for rotary power driven swivel drilling |
| 01/02/1990 | US4890671 Polished rod liner puller assembly |
| 12/26/1989 | US4889193 Rotary drill guard assembly and method |
| 12/26/1989 | US4889191 Gooseneck assembly for rock drill and method for inserting friction rock stabilizer |
| 12/19/1989 | US4887673 Technique for completing shallow wells with tension packer |
| 12/14/1989 | DE3917931A1 Verfahren und anordnung zum bohren eines lochs in einen felsen Method and arrangement for drilling a hole in a rock |
| 12/13/1989 | EP0345650A2 Anchor hole drilling rig |
| 12/12/1989 | US4886397 Dynamic load compensating system |
| 11/28/1989 | US4883388 Load compensating system |
| 11/28/1989 | US4883387 Apparatus for tensioning a riser |
| 11/16/1989 | WO1989011022A1 Hydraulic drilling machine |
| 11/16/1989 | WO1989010688A1 Method and device for determining the quantity of milk extracted from one cow |
| 11/16/1989 | WO1989010687A1 Device for determining the index of productivity and food ration of animals |
| 11/08/1989 | EP0340280A1 Self-propelled subsoil penetrating tool system |
| 11/07/1989 | US4878546 Self-aligning top drive |
| 11/07/1989 | US4878285 Method of assembling coupling to tubing or casting |
| 10/31/1989 | US4877094 Rock drilling machine, especially for underground mining |
| 10/31/1989 | US4877093 Spring actuated power swivel support rollers |
| 10/31/1989 | US4877091 Augering apparatus and drilling rig |
| 10/25/1989 | EP0339005A1 A torque wrench |
| 10/25/1989 | CN2046539U Quick-installing thread of screw protecting device |
| 10/24/1989 | US4875530 Automatic drilling system |
| 10/24/1989 | CA1262453A1 Opening device for an extension rod drilling equipment |
| 10/11/1989 | EP0144425B1 Vertical hole-boring machine |
| 10/10/1989 | US4872517 Rotatable fluid conductor for well apparatus |
| 10/05/1989 | DE3809646A1 Free-fall control arrangement |
| 10/03/1989 | US4870738 Vehicle mounted drill rod holding device |
| 10/03/1989 | CA1262150A1 Vacuum chamber including internally disposed rotary feeder |
| 09/27/1989 | CN2045023U Well-head compensator for thermal recovery |
| 09/27/1989 | CN1035865A Automatic controller for preventing "single-suspender rig down" |
| 09/26/1989 | US4869137 Jaws for power tongs and bucking units |
| 09/26/1989 | CA1260457A1 Crown mounted compensator |
| 09/20/1989 | CN2044639U Seated back clamp |
| 09/19/1989 | US4867418 Apparatus for increasing the load handling capability of support and manipulating equipment |
| 09/19/1989 | US4867240 Method and apparatus for molding underground diaphragms |
| 09/19/1989 | US4867236 Compact casing tongs for use on top head drive earth drilling machine |
| 09/12/1989 | US4866214 Service cable for a subsoil penetrating tool and method of preventing rotation of the cable when in use |
| 09/12/1989 | US4865393 Method and apparatus for braking a derrick winch |
| 09/05/1989 | US4862973 Drilling derrick device |
| 09/05/1989 | US4862959 Self-adjusting bit basket |
| 08/30/1989 | EP0329678A1 Method and device for replacing damaged pipes buried in the ground. |
| 08/22/1989 | US4858703 Self-propelled subsoil penetrating tool system |
| 08/22/1989 | US4858694 Heave compensated stabbing and landing tool |
| 08/16/1989 | EP0327661A1 Tool for aiding the fitting of a drill stabilizer to a drill collar |
| 08/15/1989 | US4856827 Resilient ball joint support |
| 08/10/1989 | WO1989007188A1 A drilling rig and a supporting frame |
| 08/10/1989 | DE3802421A1 Drilling device for making drill holes with an undercut |
| 08/09/1989 | CN2042509U Open power-spider clamping mechanism |
| 08/09/1989 | CN1004975B Bearing structure and floating vessel comprising such structure |
| 08/08/1989 | US4854400 Well drilling |
| 08/08/1989 | US4854394 Arrangement for supporting of a shank of a drilling machine |
| 08/02/1989 | EP0325733A2 Drilling device for making holes with undercuttings |
| 07/27/1989 | WO1989006741A1 Apparatus for forming slit in base rock and concrete surface |
| 07/25/1989 | US4852052 Kelly-to-riser position determining system with adjustment for uncompensated heave |
| 07/25/1989 | US4850736 Servicing device for oil well rod pumps |
| 07/25/1989 | US4850440 Method and device for making a hole in the ground |
| 07/25/1989 | US4850439 Method and a drilling rig for drilling a bore well |
| 07/25/1989 | CA1257881A1 Pipe handling apparatus |
| 07/18/1989 | US4848485 Method of and an arrangement for controlling rock drilling |
| 07/18/1989 | US4848455 Flexible drill rod feeding apparatus for quick rotary deep drilling |
| 07/11/1989 | US4846271 Adjustable mechanism for stabbing and threading a drill pipe safety valve |
| 07/04/1989 | US4845359 Methods and apparatus for safely handling radioactive sources in measuring-while-drilling tools |
| 07/04/1989 | US4844210 Line clamp |
| 07/04/1989 | US4844171 Adapter |
| 07/04/1989 | US4844166 Method and apparatus for recompleting wells with coil tubing |
| 07/04/1989 | US4843945 Apparatus for making and breaking threaded well pipe connections |
| 07/04/1989 | US4843924 Compact high-torque apparatus and method for rotating pipe |
| 06/27/1989 | US4842250 Line reeving system for earth drilling machine |
| 06/27/1989 | US4842248 Hydraulic rod pusher-puller |
| 06/27/1989 | US4842207 Device for detecting and measuring the tension on a cable |
| 06/27/1989 | US4842058 Load detection and indicator apparatus for well tubing or the like |
| 06/27/1989 | CA1256422A1 Opening device for drill rods for an extension rod drilling equipment |
| 06/26/1989 | EP0288527A4 Earth boring apparatus. |