| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
|---|
| 02/16/2000 | CN1049465C Method for improving feasibility of drilling rig of jack-up type and drilling rig of jack-up type |
| 02/15/2000 | US6024181 Portable top drive |
| 02/02/2000 | EP0975852A1 Tower |
| 01/28/2000 | CA2279148A1 Modular mobile drilling system and method of use |
| 01/05/2000 | EP0846216B1 Multi-linked working boom for working machine |
| 01/04/2000 | US6009957 Arrangement in a feed beam of a rock drill |
| 12/29/1999 | EP0777814B1 Arrangement for controlling boom for rock drilling unit |
| 12/29/1999 | CA2276786A1 Drill boom support for a drill rig |
| 12/29/1999 | CA2276220A1 Drill rig |
| 12/21/1999 | US6003598 Mobile multi-function rig |
| 12/07/1999 | US5997217 Shallow water well-drilling apparatus |
| 12/07/1999 | US5996710 Drilling device |
| 12/02/1999 | WO1999061748A1 Boom arrangement for rock drilling apparatus |
| 11/18/1999 | WO1999058812A1 Device relating to a boring assembly |
| 11/04/1999 | WO1998050667A3 Directional drilling apparatus |
| 10/27/1999 | CN2345676Y Dynamic adjusting machine for balance beam pumping unit |
| 10/14/1999 | WO1999040260A8 A jack-up, movable drilling platform |
| 10/07/1999 | DE19814033A1 Guide assembly for a drill pipe |
| 10/06/1999 | EP0947664A2 Method for monitoring a telescopic drill string and a protection device for a telescopic drill string |
| 09/28/1999 | US5956915 Tubular drill mast |
| 09/21/1999 | US5954143 Remote controlled all-terrain drill unit |
| 09/15/1999 | CN2338486Y Split block plates for dilling pads |
| 09/02/1999 | WO1999043920A1 Drilling tower |
| 09/01/1999 | CN2336080Y Safety system for preventing travelling block from pushing corwnblock for petroleum exploration driller |
| 08/17/1999 | US5938376 Automated temporary roof support, bolter and method |
| 08/17/1999 | US5937952 Feed shell positioning mechanism |
| 08/12/1999 | WO1999040260A1 A jack-up, movable drilling platform |
| 08/11/1999 | EP0934483A1 Hose supporting arrangement for actuators of rock drill apparatus |
| 08/05/1999 | WO1999038763A1 An arrangement for a drilling/production vessel with geostationary anchoring |
| 08/05/1999 | CA2318990A1 An arrangement for a drilling/production vessel with geostationary anchoring |
| 07/13/1999 | US5921329 In a drilling rig |
| 06/22/1999 | CA2237309C Method and apparatus for controlling reactive torque on a drill string while drilling |
| 06/17/1999 | DE19813902C1 Method of monitoring a telescopic bore rod |
| 06/09/1999 | EP0920567A1 Rock drilling rig |
| 06/03/1999 | WO1999027222A1 Arrangement for workover and drilling of offshore wells |
| 04/30/1999 | CA2252452A1 Portable earth drilling apparatus with telescopic mast |
| 04/28/1999 | CN2316451Y Hoisting derrick for motor of beam-pumping unit |
| 04/27/1999 | US5896936 Arrangement for controlling boom for rock drilling unit |
| 04/27/1999 | US5896935 Arrangement in boom for rock drilling unit |
| 04/13/1999 | US5893421 Arrangement for mounting swing cylinders in boom for rock drilling unit |
| 04/07/1999 | CN2313037Y Mudflat well-repairing machine |
| 04/06/1999 | US5890534 Variable injector |
| 03/23/1999 | US5884712 Arrangement for a telescope feeder of a rock-drilling machine |
| 03/17/1999 | EP0902160A2 Auger drill machine with support rod |
| 03/16/1999 | US5881815 Drilling, production, test, and oil storage caisson |
| 03/11/1999 | WO1999011901A1 Drilling vessel provided with auxiliary tower or auxiliary mast |
| 03/02/1999 | US5875850 Universal pipe and tubing injection apparatus and method |
| 02/24/1999 | CN2308704Y Car carrying oil pumping unit |
| 02/23/1999 | US5873416 In an offshore structure designed to drill for/produce hydrocarbons |
| 02/09/1999 | CA2189376C Hybrid coiled tubing/conventional drilling unit |
| 01/13/1999 | EP0890704A1 Wheel-mounted boring machine with hinged chassis |
| 12/22/1998 | US5850874 Drilling system with electrically controlled tubing injection system |
| 12/17/1998 | WO1998057034A1 Method of controlling rock drilling |
| 12/16/1998 | EP0807203B1 Continuous control system for a mining or tunnelling machine |
| 12/08/1998 | US5845708 For injecting/withdrawing casing, pipe or tubing into/from a well |
| 12/01/1998 | US5842530 For the drilling and servicing of bore holes in the earth |
| 11/17/1998 | US5836402 Auger-holder |
| 11/12/1998 | WO1998050667A2 Directional drilling apparatus |
| 11/11/1998 | CN1198794A Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 10/29/1998 | WO1998048142A1 Tower |
| 10/21/1998 | EP0765430A4 Soil sampler |
| 10/20/1998 | US5823267 Universal pipe and tubing injection apparatus and method |
| 10/11/1998 | CA2234745A1 Underground mining drill rig |
| 10/07/1998 | EP0868593A1 Apparatus and method for raising and lowering a piston in a piston-cylinder arrangement in a derrick |
| 10/07/1998 | EP0868592A1 Arrangement in connection with a yoke in a hoisting system for a derrick |
| 09/30/1998 | CN1194679A Multi-activity offshore exploration and/or development drilling method and apparatus |
| 09/22/1998 | US5810101 Horizontal drilling machine |
| 09/15/1998 | US5806616 Arrangement in a rock drilling equipment |
| 09/08/1998 | US5803550 Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 09/08/1998 | US5803189 Directional boring machine |
| 09/02/1998 | EP0861967A2 Mobile working apparatus |
| 08/18/1998 | US5794724 For drilling openings in concrete and related materials |
| 08/05/1998 | EP0836668A4 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 07/16/1998 | DE19701172A1 Magazine and carriage for sections of drill rod |
| 07/14/1998 | US5778988 Drilling apparatus |
| 07/14/1998 | US5778987 Guided drilling system with shock absorber |
| 07/08/1998 | EP0851960A1 Telescoping derrick |
| 07/08/1998 | CN1187227A Method for improving feasibility of dilling rig of jack-up type and drilling rig of jack-up type |
| 06/30/1998 | US5772362 To locate in the ground poles for supporting a racing rail assembly |
| 06/10/1998 | EP0846216A1 Multi-linked working boom for working machine |
| 06/09/1998 | US5762148 Boring tool |
| 05/27/1998 | EP0843774A1 Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 05/26/1998 | US5755296 Portable top drive |
| 05/19/1998 | US5752572 Tractor for remote movement and pressurization of a rock drill |
| 05/07/1998 | WO1998019091A1 Hose supporting arrangement for actuators of rock drill apparatus |
| 05/05/1998 | US5746277 Drilling apparatus |
| 04/23/1998 | WO1998016715A1 Off-shore oil or gas production unit |
| 04/22/1998 | EP0836668A1 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 04/22/1998 | CN2279437Y Short goalpost drilling machine drill rig |
| 04/14/1998 | US5738173 Universal pipe and tubing injection apparatus and method |
| 04/07/1998 | US5735647 For drilling a worn or damaged tap hole |
| 03/18/1998 | CN2276551Y Movable thin case metal base of petroleum drilling machine |
| 03/05/1998 | DE19635083A1 Drilling equipment with rock drilling machine supported in frame |
| 03/03/1998 | US5722494 Offshore well structure |
| 02/26/1998 | WO1998007952A1 Rock drilling rig |
| 02/25/1998 | EP0825326A2 Method and apparatus for horizontal drilling and for handling drill rods |
| 02/25/1998 | EP0824634A1 A hydraulic arrangement for turning the actuator of a rock drilling machine |
| 02/19/1998 | WO1998006926A1 A device for a derrick |
| 02/18/1998 | CN2274685Y Derrick equipped with traveling block |
| 02/03/1998 | CA2099981C Drilling unit |