| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
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| 09/08/2009 | CA2414091C Method of opening joints between drilling components, and rock drill |
| 09/03/2009 | WO2009106897A2 A method and system for facilitating assembly of a drilling rig |
| 09/03/2009 | WO2009106860A2 Method and apparatus for facilitating assembly and erection of a drilling rig |
| 09/03/2009 | WO2009106859A1 Method and apparatus for facilitating assembly and erection of a drilling rig |
| 09/03/2009 | WO2009018448A9 Return line mounted pump for riserless mud return system |
| 09/03/2009 | US20090218144 Drilling rig masts and methods of assembly and erecting masts |
| 09/03/2009 | US20090218139 Drilling rigs and erection methods |
| 09/03/2009 | CA2781076A1 A method and system for facilitating assembly of a drilling rig |
| 09/03/2009 | CA2716749A1 A method and system for facilitating assembly of a drilling rig |
| 09/03/2009 | CA2716103A1 Method and apparatus for facilitating assembly and erection of a drilling rig |
| 09/03/2009 | CA2716057A1 Method and apparatus for facilitating assembly and erection of a drilling rig |
| 08/29/2009 | CA2623121A1 Method and system for helicopter portable drilling |
| 08/27/2009 | WO2009105005A1 Boom arrangement for a rock drill and rock drill rig |
| 08/27/2009 | US20090211813 Drilling rig and method for introducing one or more drilling pipes into an underbalanced well using same |
| 08/26/2009 | CN201297131Y A luffing mechanism of rotary dig drill machine mast top pulley support |
| 08/20/2009 | WO2009101377A1 Method and apparatus for facilitating erection of a drilling rig |
| 08/20/2009 | CA2711458A1 Method and apparatus for facilitating erection of a drilling rig |
| 08/19/2009 | CN201292776Y Ocean oil drilling platform derrick |
| 08/19/2009 | CN201292775Y Oil rig derrick |
| 08/19/2009 | CN101509355A Double drilling rod drive apparatus and double drill rod mash gas outburst prevention drill |
| 08/19/2009 | CN101509354A External hanging drilling slot for platform |
| 08/12/2009 | CN201288504Y Digging machine type drill |
| 08/12/2009 | CN101503947A Telescopic combined double-layer drilling rig |
| 08/12/2009 | CN101503946A Carriage apparatus capable of enabling damped oscillation of unit head |
| 08/11/2009 | CA2527529C Construction apparatus |
| 08/06/2009 | WO2009097574A2 Small footprint drilling rig |
| 08/06/2009 | WO2009027825A3 Work-over rig assembly and methods thereof |
| 08/05/2009 | EP1929125B1 System for tracking and maintaining an on-grade horizontal borehole |
| 07/30/2009 | DE102008006392A1 Verfahren und Vorrichtung zum Erstellen einer Tiefbohrung Method and apparatus for creating a deep borehole |
| 07/22/2009 | CN201276974Y Drill rig seat with non-balancing support |
| 07/22/2009 | CN101487378A Dynamic load transfer apparatus for self-lifting type drill ship pile leg locking device |
| 07/16/2009 | WO2009089528A2 Subsea drilling system and method for operating the drilling system |
| 07/16/2009 | WO2009089524A2 Method and device for subsea wire line drilling |
| 07/16/2009 | US20090178853 Mobile soil sampling device with vacuum collector |
| 07/15/2009 | CN201273147Y Derrick latch mechanism |
| 07/15/2009 | CN201273146Y Elevator suitable for module drill rig |
| 07/08/2009 | EP1289716B1 Pivoting support for power tool |
| 07/07/2009 | CA2553470C Apparatus for slant drilling |
| 07/07/2009 | CA2458376C Multi-functional drilling vehicle |
| 07/01/2009 | CN201265363Y Petroleum drilling column type derrick assembly and disassembly apparatus |
| 07/01/2009 | CN201265362Y Double-operation derrick |
| 07/01/2009 | CN101469602A Equipment for assembly of a section of rack on a self-raising oil platform |
| 06/30/2009 | US7552781 Power tool anti-kickback system with rotational rate sensor |
| 06/24/2009 | CN201262042Y Simple drilling rack |
| 06/24/2009 | CN100504023C An offshore drilling system |
| 06/23/2009 | CA2541168C Inline compensator for a floating drilling rig |
| 06/18/2009 | US20090151955 Big assembly with movable rig floor units |
| 06/17/2009 | CN201258696Y Double-lifting device of ZJ40D drill |
| 06/17/2009 | CN201258695Y Portable drill stand |
| 06/11/2009 | US20090145611 Tensioner anti-rotation device |
| 06/10/2009 | CN201254954Y Three-cylinder airleg matched with rock drill |
| 06/09/2009 | CA2568659C Mobile drilling rig with dual carriers |
| 06/09/2009 | CA2426400C Rock drilling machine |
| 06/04/2009 | WO2008155654A3 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods |
| 06/03/2009 | CN201250611Y Pusher-feed rock drill and support component for same |
| 06/02/2009 | CA2537959C Universal rig with vertical stand for tubulars |
| 06/02/2009 | CA2405096C Rock drilling rig |
| 05/27/2009 | EP2063067A1 Underwater drilling device and method for carrying out underwater drilling, in particular for attaching an underwater anchoring |
| 05/27/2009 | EP1784555A4 Method and system for installing and maintaining a pipeline while minimizing associated ground disturbance |
| 05/27/2009 | CN201246103Y Pneumatic water exploring drill |
| 05/20/2009 | CN201241630Y Anchorage inclined angle-changing structure of horizontal directional drilling machine |
| 05/20/2009 | CN201241629Y Main arm swinging link mechanism of horizontal directional drilling rig |
| 05/20/2009 | CN201241628Y Novel horizontal directional drilling rig rear leg |
| 05/20/2009 | CN201241627Y Assembling-disassembling safe platform of headframe pin |
| 05/20/2009 | CN201241623Y Anti-surge apparatus of navigation channel drill machine |
| 05/20/2009 | CN101435313A Top butt-joint type oil rig headframe |
| 05/19/2009 | CA2533725C Apparatus and method for performing earth borehole operations |
| 05/19/2009 | CA2450899C Method and apparatus for movement of drilling equipment between adjacent locations |
| 05/14/2009 | US20090120632 Subsea power umbilical |
| 05/13/2009 | CN201236632Y Assembling type double-layer bidirectional rail movable seat of land used oil-well rig |
| 05/06/2009 | EP1924756B1 Drilling rig and method for introducing one or more drilling pipes into an underbalanced well using same |
| 04/29/2009 | CN201228523Y Multifunctional electric hammer support |
| 04/29/2009 | CN101418675A Method and device for restraining vortex-induced vibration by underwater pipeline |
| 04/23/2009 | DE102007050180A1 Schwenkvorrichtung und Mäkler Turning device and broker |
| 04/22/2009 | CN201225091Y Inclined slope pile drilling machine |
| 04/16/2009 | US20090095465 Pivoted rail-based assembly and transport system for well-head equipment |
| 04/15/2009 | CN201221322Y Novel petroleum well drilling hoisting system and headframe |
| 04/15/2009 | CN201221314Y Light vehicle-mounted drill |
| 04/15/2009 | CN201221313Y Mining outburst prevention fully-mechanized mining face light emulsifiable solution drill |
| 04/15/2009 | CN201221312Y Combined project drill |
| 04/15/2009 | CN101408090A Indexing for coiled tubing drilling rig |
| 04/08/2009 | CN201218057Y Drilling apparatus |
| 04/07/2009 | US7513312 Drilling rig apparatus and downhole tool assembly system and method |
| 04/02/2009 | WO2009018448A3 Return line mounted pump for riserless mud return system |
| 04/01/2009 | CN201214985Y Novel anchoring base installation mechanism |
| 04/01/2009 | CN201214984Y Fixed device for boring drill for light-duty fireproof brick inner lining furnace wall of annealing furnace |
| 03/26/2009 | US20090080815 Light metal feed beam for use on a drill rig |
| 03/26/2009 | US20090078438 Arrangement for Positioning Drilling Unit |
| 03/26/2009 | US20090078424 Subsea lateral drilling |
| 03/25/2009 | EP2039875A1 Drilling device, in particular deep drilling device |
| 03/25/2009 | CN101392632A Three-cylinder airleg matched with rock drill |
| 03/25/2009 | CN101392630A Drill and method for operating a drill |
| 03/25/2009 | CN101392629A Portable all-hydraulic core drilling rig |
| 03/19/2009 | US20090071674 Drilling implement and method for operating a drilling implement |
| 03/18/2009 | EP2035650A1 Triple activity drilling ship |
| 03/18/2009 | CN201209405Y Side thrust rack of down-the-hole drill wagon for jack hammer |
| 03/18/2009 | CN101387188A Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| 03/12/2009 | WO2008155667A3 Extension bridges and methods of tender assist |
| 03/12/2009 | US20090065258 Method and apparatus for directional drilling with variable drill string rotation |
| 03/11/2009 | CN201206435Y Following rack for rotary drill rig |