| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
|---|
| 06/01/2011 | CN201850548U High-pressure rotary spraying pile driver |
| 06/01/2011 | CN1985066B Apparatus and method for modified horizontal directional drilling assembly |
| 06/01/2011 | CN102084067A 钻探平台 Drilling Platform |
| 06/01/2011 | CN102080501A Mineral deep hole drilling carriage unit |
| 06/01/2011 | CN102080499A Automatically moving drilling device and construction method thereof |
| 05/25/2011 | EP2324186A1 Multi-function multi-hole drilling rig |
| 05/25/2011 | CN201843526U Novel positioning punching device for wall body |
| 05/25/2011 | CN201843525U Automobile rotary drilling rig and getting-on platform thereof |
| 05/25/2011 | CN201843516U Rotary drilling rig for automobiles |
| 05/25/2011 | CN201843514U Movable pit driller of electric concrete pole |
| 05/25/2011 | CN201843510U Rotary drilling rig |
| 05/25/2011 | CN201843509U Quick power head lifting device and vehicle-mounted drill using same |
| 05/25/2011 | CN201843507U Rotary drilling rig provided with detecting mechanism |
| 05/25/2011 | CN201843131U Long auger drilling machine |
| 05/25/2011 | CN201843130U Drilling machine with long auger stem |
| 05/25/2011 | CN102071889A Operating device of well drilling and repairing machine |
| 05/25/2011 | CN102071887A Operating method of well drilling and repairing machine |
| 05/24/2011 | CA2371989C Drill rod handling device |
| 05/23/2011 | CA2721978A1 Articulating mast |
| 05/19/2011 | US20110114390 Sleeve arrangement |
| 05/19/2011 | US20110114308 Hydraulic Interlock System Between Casing Gripper and Spider |
| 05/18/2011 | EP2321488A1 Tilted drive sub |
| 05/18/2011 | CN201835755U Top drive sliding plug type folding guide rail plate |
| 05/18/2011 | CN201835742U Mining propelling mechanism of electric-pneumatic in-the-hole drill |
| 05/18/2011 | CN201835283U Electric pile frame vertical post cross bottom joint device |
| 05/18/2011 | CN102061890A Rotary drilling rig and follow-up frame structure thereof |
| 05/18/2011 | CN102061889A Driller tower hoisting device and using method thereof |
| 05/18/2011 | CN102061882A Multifunctional self-propelled tower-machine integrated core drill machine |
| 05/18/2011 | CN101503947B Telescopic combined double-layer drilling rig |
| 05/18/2011 | CN101503946B Carriage apparatus capable of enabling damped oscillation of unit head |
| 05/18/2011 | CA2721540A1 Split sub-basement drill rig |
| 05/17/2011 | CA2720430A1 Underwater drilling arrangement and method for introducing a tubular foundation element into the bed of a body of water |
| 05/17/2011 | CA2562817C Compensation system for a jacking frame |
| 05/12/2011 | WO2011011505A3 Offshore drilling system |
| 05/11/2011 | CN201826774U Double-roller suction type workover rig |
| 05/11/2011 | CN201826761U Derrick |
| 05/11/2011 | CN201826760U Oil drilling rig shifting device |
| 05/11/2011 | CN201826759U Lifting platform for construction vehicle |
| 05/11/2011 | CN201826750U Drainage drilling machine provided with self-moving device |
| 05/11/2011 | CN201825694U Lifting device for drilling machine |
| 05/11/2011 | CN101225735B Trestle supporting pneumatic drilling machine |
| 05/10/2011 | US7938190 Anchored riserless mud return systems |
| 05/04/2011 | EP2315881A1 Drilling platform |
| 05/04/2011 | CN201818305U Oil-test burning arm |
| 05/04/2011 | CN102041969A Square shaft structure of rotary drilling rig |
| 04/27/2011 | CN201810333U Drilling, loading and anchoring all-in-one machine for outburst mine and coal roadway |
| 04/27/2011 | CN102037209A A method and system for facilitating assembly of a drilling rig |
| 04/27/2011 | CN102031932A Supporting structure for mine rig |
| 04/27/2011 | CN102031929A PLC (Programmable Logic Controller) controlled variable-frequency piling machine |
| 04/26/2011 | CA2609027C Drilling rig placed on the sea bed and equipped for drilling of oil and gas wells |
| 04/20/2011 | EP2310610A1 Rotating device |
| 04/20/2011 | CN201802409U Multi-arm rock drill |
| 04/20/2011 | CN201802319U Lower frame of roadway drilling machine used in coal mine |
| 04/20/2011 | CN201802318U Lifting and pressurizing device for screw-threaded pile machine |
| 04/20/2011 | CN102022079A Outburst-prevention drilling machine on mining surface of gassy outburst coal mine and frequency conversion variable liquid-supplying self-walking pump station thereof |
| 04/20/2011 | CN101487378B Dynamic load transfer apparatus for self-lifting type drill ship pile leg locking device |
| 04/14/2011 | US20110083840 Workover rig with reinforced mast |
| 04/13/2011 | CN201794610U Drilling, loading, anchoring, supporting and transporting integrated machine in high outburst mine coal drift |
| 04/13/2011 | CN201794609U Drilling, loading and supporting all-in-one machine for coal roadway of high outburst coal mine |
| 04/13/2011 | CN201794523U Gantry supporting structure for drilling machine |
| 04/13/2011 | CN201794522U Butting device for top-drive guide-way plates |
| 04/13/2011 | CN201794521U Fixing structure of strike platform adopting permanent derrick to build well |
| 04/13/2011 | CN201794514U Portable rotary drilling rig |
| 04/13/2011 | CN102016219A Method and apparatus for facilitating assembly and erection of a drilling rig |
| 04/13/2011 | CN102011556A Mast link frame system of rotary drilling rig |
| 04/13/2011 | CN102011547A Moving device for petroleum drilling machine |
| 04/07/2011 | US20110079432 Method and device for core drilling |
| 04/06/2011 | EP2305946A1 Top feed of control lines to table-elevated spider |
| 04/06/2011 | EP2304178A1 Rock drilling device |
| 04/06/2011 | EP2304158A1 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device |
| 04/06/2011 | CN201786268U Mobile derrick |
| 04/06/2011 | CN201786244U Rotary drilling rig |
| 04/06/2011 | CN201786243U Drill for underground |
| 04/06/2011 | CN201786242U Hydraulic spiral drilling machine |
| 04/06/2011 | CN102003152A Lip type reversing coupling double-spiral blade type vortex induced vibration restraining device for deep sea vertical pipe |
| 04/06/2011 | CN102003143A Multidirectional hydraulic rock drilling machine with integrated drives |
| 04/06/2011 | CN102002941A Large-aperture long screw rig, reinforcement cage concreting device and fabricating method of large-aperture deep pile |
| 04/01/2011 | CA2716033A1 Guyless service rig with side-mounted, pivotally deployable rear outriggers |
| 03/31/2011 | WO2009106897A3 A method and system for facilitating assembly of a drilling rig |
| 03/31/2011 | US20110073297 Permanent magnet direct drive drawworks |
| 03/31/2011 | US20110072737 Portable drilling rig apparatus and assembly method |
| 03/31/2011 | DE102009043081A1 Storage device for vertical storing of drilling rod in drilling mast of vertical drilling system, has upper retaining device exhibiting retaining slot, which extends with respect to rotation device |
| 03/30/2011 | CN201778664U Angle adjustment device for derrick of slant-hole drilling rig |
| 03/30/2011 | CN201778663U Rotary drilling dig and guide pulley yoke thereof |
| 03/30/2011 | CN201778662U Slipping type hydraulic drilling rig frame |
| 03/30/2011 | CN201778661U Hydraulic-cylinder-lifted slingshot derrick substructure |
| 03/30/2011 | CN201778660U Dedicated liftable operation wellhead drill stand for beach oilfield workover operations |
| 03/29/2011 | CA2544318C Mobile drilling rig with replaceable dolly |
| 03/23/2011 | CN201771436U Drilling machine easy to move |
| 03/23/2011 | CN201771435U Portable ground anchor machine |
| 03/23/2011 | CN201771434U Hydraulic propelling landing leg for electric coal drill |
| 03/23/2011 | CN201771433U Folding mechanism for mast of rotary drilling rig |
| 03/23/2011 | CN201771422U Coal mine rock hydraulic drill |
| 03/23/2011 | CN201771421U Frame pillar type hydraulic drilling machine |
| 03/23/2011 | CN101990592A Pnuematic drifter with replaceable foot pieces |
| 03/22/2011 | US7909117 Downhole adjustable bent-angle mechanism for use with a motor for directional drilling |
| 03/22/2011 | CA2564357C Apparatus and method for modified horizontal directional drilling assembly |
| 03/16/2011 | EP2294276A1 Pneumatic drifter with replaceable foot pieces |
| 03/16/2011 | CN201763260U Parallelogram luffing mechanism of rotary drilling rig |
| 03/16/2011 | CN201763259U Rotary drilling rig and cathead thereof |