| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
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| 03/11/2009 | CN201206434Y Mast protection arrangement for rotary drill rig |
| 03/11/2009 | CN201206433Y Anti-turning over device for rotary drill rig |
| 03/11/2009 | CN201206432Y Mobile arm amplitude mechanism for rotary drill rig |
| 03/11/2009 | CN201206431Y Base plate of rotary drill rig |
| 03/11/2009 | CN201206430Y Rotating platform for rotary drill rig |
| 03/11/2009 | CN101382042A Ocean floating drill platform string heave compensation device |
| 03/11/2009 | CN101382041A Dredger type drill |
| 03/10/2009 | CA2407233C Automated riser recoil control system and method |
| 03/04/2009 | CN201202410Y Headframe telescoping mechanism |
| 03/04/2009 | CN201202402Y Rapid drilling and positioning machine tool |
| 03/04/2009 | CN201202401Y Non- guy rope well repairing machine |
| 03/04/2009 | CN201202400Y Baseboard anchorage cable drill |
| 03/04/2009 | CN101379268A Upper beam for a telescopic feeder, telescopic feeder and drilling device for rock drilling |
| 02/25/2009 | CN201198738Y Middle deep hole chisel rock rack |
| 02/25/2009 | CN201198735Y Self-power generation walking type pile machine |
| 02/18/2009 | EP2025860A1 Deep drilling device and method for erecting a deep drilling device |
| 02/18/2009 | EP2025859A1 Deep drilling device and method for mounting a deep drilling device |
| 02/11/2009 | CN201193478Y Drivage face emulsion drill against outburst |
| 02/11/2009 | CN101363306A Pneumatic anchor rod hammer drill |
| 02/05/2009 | WO2009018448A2 Return line mounted pump for riserless mud return system |
| 02/05/2009 | US20090032301 Return line mounted pump for riserless mud return system |
| 02/05/2009 | US20090032277 Hydraulic drilling machine for working in a small space |
| 02/04/2009 | CN201190538Y Drill-supporting and claw-clamping device for coal mining drilling machine |
| 02/04/2009 | CN201190533Y Portable drilling rig |
| 02/03/2009 | US7484558 Load bearing support structure for rigs above a wellhead |
| 01/30/2009 | CA2637965A1 Method and apparatus for protecting offshore structures |
| 01/28/2009 | CN201187255Y Top board drill support frame |
| 01/28/2009 | CN201187254Y Plastic slide board of drill guide rail |
| 01/28/2009 | CN201187253Y Headframe draw bar locking apparatus |
| 01/28/2009 | CN201187252Y Drill guiders |
| 01/28/2009 | CN201187247Y Oil rig driven by high voltage AC frequency conversion electric power |
| 01/27/2009 | US7481627 Air compressor tools that communicate with an air compressor |
| 01/25/2009 | CA2595666A1 Modular coiled tubing and sectional pipe drilling rig |
| 01/21/2009 | CN201184134Y Inverse well drill reverse T type dismountable drill rig |
| 01/21/2009 | CN201184126Y Mining large-scale inverse well drill |
| 01/21/2009 | CN201184125Y Pulling type frequency conversion electric power drive 4000m oil rig |
| 01/21/2009 | CN101349142A Ground anchor bearing hydraulic drill working machine |
| 01/20/2009 | US7478685 Hydraulic drilling machine for working in a small space |
| 01/20/2009 | CA2548342C Load bearing support structure for rigs above a wellhead |
| 01/20/2009 | CA2403124C Arrangement for determining position of unmanned mining vehicles |
| 01/15/2009 | WO2009007502A1 Method and apparatus for drilling hole into bedrock |
| 01/15/2009 | US20090014213 Separation Device for Material from a Power Tong on a Drilling Rig Situated on the Sea Bed |
| 01/14/2009 | CN201180502Y Combination type drilling tower |
| 01/14/2009 | CN201180501Y Novel front and rear support structure of drill rig |
| 01/14/2009 | CN201180500Y Connection device of derrick and shaft bracket |
| 01/14/2009 | CN201180489Y Double-power electrohydraulic mechanical transmission workover rig |
| 01/08/2009 | US20090008153 Auger stabilizer |
| 01/08/2009 | US20090008110 Mobile self-erecting directional drilling rig apparatus |
| 01/07/2009 | CN201176852Y Oil rig derrick and foundation lifting device |
| 01/07/2009 | CN201176851Y Telescopic type derrick up-down integral type interlocking device |
| 01/07/2009 | CN201176849Y Quick high precision positioning device for perforation of boring machine |
| 01/06/2009 | US7472762 Top drive oil flow path seals |
| 01/01/2009 | US20090000800 Portable robot |
| 12/31/2008 | WO2009002189A1 Drilling tower device and drilling machine system |
| 12/31/2008 | WO2009001133A2 Land rig |
| 12/31/2008 | WO2009001088A1 Well apparatus |
| 12/31/2008 | CN201173093Y Mobile down-the-hole drill rig |
| 12/31/2008 | CA2703803A1 Land rig |
| 12/30/2008 | CA2439963C Offshore floating production method |
| 12/24/2008 | WO2008155654A2 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods |
| 12/17/2008 | CN201165847Y Rack pillar support pneumatic drilling machine |
| 12/16/2008 | CA2392331C Subsea well intervention vessel |
| 12/11/2008 | WO2008148939A1 Method of quarrying dimensional stone, and line drilling apparatus |
| 12/03/2008 | EP1996788A1 Drilling rig situated on the seabed, including a separation device |
| 12/03/2008 | CN201159051Y Mobile derrick |
| 12/03/2008 | CN101316966A Offshore platform with movable cantilever extending outside deck |
| 11/28/2008 | CA2633961A1 Low ground pressure and amphibious coring system |
| 11/26/2008 | CN201155301Y Clamping device moving along rail |
| 11/26/2008 | CN201155299Y Tractor boring machine |
| 11/19/2008 | CN201152150Y Falling-proof type self-moving strut rod advanced support peripheral rack |
| 11/19/2008 | CN201152145Y Vertical type horizontal directional drilling rig |
| 11/19/2008 | CN201152144Y Vertical type horizontal directional drilling rig with guide wheel |
| 11/19/2008 | CN201152143Y Conduit pipe vertical type horizontal directional drilling rig |
| 11/19/2008 | CN101307675A Multifunctional engineering drill |
| 11/18/2008 | US7451821 Blow out preventer transfer platform |
| 11/13/2008 | WO2008136926A1 Shallow/intermediate water multipurpose floating platform for arctic environments |
| 11/12/2008 | EP1990504A2 Drilling rig, wherein the mast is not subjected to compressive stresses |
| 11/12/2008 | EP1989394A1 Method and device for automatic calibration of a rock drilling joint and rock drilling rig comprising such a device |
| 11/12/2008 | EP1989393A1 Method and device for controlling the drilling direction of a rock drilling rig |
| 11/06/2008 | US20080271922 Tool Handling Device in a Drillrig That is Situated on the Sea Bed |
| 11/05/2008 | CN201144652Y Lifting type drill floor |
| 11/05/2008 | CN201144640Y Hydraulic telescopic door frame type drill |
| 11/05/2008 | CN201144635Y Novel foldable cage ladder |
| 11/05/2008 | CN201144634Y Assisting device for climbing derrick ladder |
| 11/05/2008 | CN101298832A Gin pole turnover mechanism |
| 11/05/2008 | CN101298830A Vertical shaft soft rock special drill construction technique |
| 11/05/2008 | CN101298829A Automatic reciprocating hydraulic oil cylinder type hammer drill |
| 10/30/2008 | WO2008130242A1 A method and a device for intervention in an underwater production well |
| 10/24/2008 | CA2585986A1 Skidding system for a catwalk |
| 10/22/2008 | EP1983150A2 Drilling machine designed to tilt the mast in any direction |
| 10/22/2008 | EP1983149A2 Mast |
| 10/22/2008 | EP1983147A2 Construction device, leads and method for mounting leads on construction device |
| 10/22/2008 | EP1982041A1 Upper beam for a telescopic feeder, telescopic feeder and drilling device for rock drilling |
| 10/22/2008 | CN201137460Y Fully-mechanized mining working faces emulsion dashing-proof drilling machine |
| 10/21/2008 | US7438502 Telescoping underwater guide |
| 10/16/2008 | WO2008122696A1 Noise-dampening shield structure for rock drilling apparatus |
| 10/16/2008 | WO2008122694A1 Sound dampening housing for rock drill |
| 10/16/2008 | CA2682341A1 Sound dampening housing for rock drill |
| 10/15/2008 | EP1980710A2 Rig for drilling or maintaining oil wells |
| 10/15/2008 | EP1979571A1 Top feed of control lines to table-elevated spider |