| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
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| 01/13/2010 | CN201381804Y Pneumatic supporter frame body pad |
| 01/13/2010 | CN201381803Y T-shaped base of beam pumper |
| 01/13/2010 | CN100580215C Telescopic feed beam for rock drill |
| 01/12/2010 | US7644784 Transport watercraft |
| 01/12/2010 | US7644782 Method for correcting positioning errors in rock drilling, and rock drilling equipment |
| 01/10/2010 | CA2637906A1 Apparatus for drilling machine alignment |
| 01/06/2010 | CN201377372Y Adjustable injection pump checking support of drilling diesel engine |
| 01/06/2010 | CN201377335Y Underground crawler traveling type rotary gas drilling machine |
| 01/06/2010 | CN201377290Y Drill pipe cage of continuous wall drill |
| 01/06/2010 | CN201377289Y Novel linking mechanism in which upright column and seat of engineering driller are linked |
| 01/06/2010 | CN101619647A Swing link mechanism for horizontal orientation drill main arm |
| 01/06/2010 | CN101619646A Engineering plant and mast support thereof |
| 12/31/2009 | US20090321135 Rocket rig drilling apparatus |
| 12/31/2009 | US20090321133 Rock drilling apparatus and methdo for controlling rock drilling apparatus |
| 12/31/2009 | DE102008030124A1 Getriebeloses Hebewerk Gearless lift |
| 12/31/2009 | DE10123250B4 Bohr-und Ankersetzgerät mit Bohrstangenzentrierung Drilling and bolting device with Bohrstangenzentrierung |
| 12/30/2009 | WO2009157776A1 Method for anchoring of a mooring line |
| 12/30/2009 | WO2009155639A1 Drilling platform |
| 12/30/2009 | CN100575656C Full-hydraulic multifunctional driller for gas extraction, drainage and discharge |
| 12/30/2009 | CA2729047A1 Drilling platform |
| 12/29/2009 | CA2519676C Telescopic feed beam for rock drill and method of measuring rock drill travel |
| 12/24/2009 | US20090317194 Drilling rig and drilling method |
| 12/24/2009 | US20090314544 Well Drilling and Production Using a Surface Blowout Preventer |
| 12/24/2009 | US20090314495 Systems and methods for drilling and producing subsea fields |
| 12/23/2009 | CN101608765A Power-supply device of solar photovoltaic generating system applied to petroleum boring tower |
| 12/23/2009 | CN101608534A Telescopic drill frame for drill |
| 12/23/2009 | CN100572741C Portable well-digging machine |
| 12/22/2009 | CA2442728C Pivoting support for power tool |
| 12/16/2009 | EP2132397A1 Noise-dampening shield structure for rock drilling apparatus |
| 12/16/2009 | EP2132396A1 Sound dampening housing for rock drill |
| 12/16/2009 | CN201363097Y Double-drill rod transmission device and double-rod anti-outburst drill |
| 12/16/2009 | CN201363093Y Supporting and guiding structure for mining deep-hole drilling carriage |
| 12/16/2009 | CN201363087Y Gassy outburst mine coal-road tunneling outburst-proof drill loader with dual drilling machine and dual pump station |
| 12/15/2009 | CA2501736C Continuous wellbore drilling system with stationary sensor measurements |
| 12/15/2009 | CA2362866C Drilling machine and method for sinking a well |
| 12/09/2009 | CN201358723Y Connecting frame of ground anchor machine |
| 12/09/2009 | CN201358722Y Base of concrete drilling machine rack |
| 12/09/2009 | CN201358721Y Pull rod of concrete drilling machine rack |
| 12/09/2009 | CN201358720Y Multifunctional drill tower used for geological exploration |
| 12/09/2009 | CN201358719Y Rotating pumping rod support |
| 12/09/2009 | CN201358712Y Trestle type pneumatic bottom hole drilling machine |
| 12/09/2009 | CN101598003A Hydraulic gait-mode heavy caliber Longmen stake machine |
| 12/09/2009 | CN101598002A Door frame type drilling machine |
| 12/08/2009 | US7628225 Drilling device |
| 12/02/2009 | EP2126268A1 Rig engine control |
| 12/02/2009 | EP2126226A1 Apparatus for driving elongated elements into the ground |
| 12/02/2009 | CN201354598Y Welding wire-line anchor arranged on oil rig derrick |
| 11/26/2009 | WO2009142666A1 Pneumatic drifter with replaceable foot pieces |
| 11/26/2009 | US20090288882 Hydraulic head clamp assembly for mobile drill rig |
| 11/25/2009 | CN201351458Y Lifting body of concrete drilling machine rack |
| 11/19/2009 | WO2009138556A1 Rotating device |
| 11/19/2009 | CA2720282A1 Rotating device |
| 11/18/2009 | CN101581199A Bracket for smoke exhaust pipe of main generator of semisubmersible drilling platform and setting method thereof |
| 11/18/2009 | CN101581198A Overhead hoisting and butt-joint method for box-type headframe |
| 11/12/2009 | WO2009136843A1 Rock drilling device |
| 11/12/2009 | WO2009136841A1 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device |
| 11/11/2009 | CN201343998Y Pedestal of concrete drill frame |
| 11/11/2009 | CN201343997Y Vertical column of concrete drill frame |
| 11/11/2009 | CN201343996Y Rig substructure for pole and tower rockbolt foundation of transmission lines |
| 11/11/2009 | CN201343995Y Auxiliary balance weight for rotary drilling rig |
| 11/11/2009 | CN101575946A Linkage operation method of three derricks on ocean platform |
| 11/11/2009 | CN101575945A Desert guy line pile |
| 11/11/2009 | CN101575944A Guy line pile |
| 11/11/2009 | CN101575943A Hydraulic high-speed drill |
| 11/11/2009 | CN101575942A Pneumatic anchor rod hammer drill |
| 11/05/2009 | US20090272540 Mobile hydraulic workover rig |
| 11/05/2009 | CA2766058A1 Mobile hydraulic workover rig |
| 11/03/2009 | CA2491920C Jacking frame for coiled tubing operations |
| 10/29/2009 | WO2009097574A3 Small footprint drilling rig |
| 10/29/2009 | US20090266617 Sleeve arrangement |
| 10/28/2009 | CN101566042A Heavy hydraulic walking chassis |
| 10/21/2009 | CN201330565Y Semi-trailing drilling platform for oil drilling and repairing equipment |
| 10/21/2009 | CN201330564Y Derrick lifting recovery unit |
| 10/21/2009 | CN201330560Y Column type backplane jumbolter |
| 10/20/2009 | CA2533969C Coiled tubing/top drive rig and method |
| 10/20/2009 | CA2533940C Method and apparatus for conducting earth borehole operations |
| 10/14/2009 | CN201326609Y Hydraulic cylinder extension remote control unit |
| 10/14/2009 | CN201326382Y Hydraulic outburst prevention drilling machine for coal seam gas drainage |
| 10/14/2009 | CN201326381Y Top docking type oil rig derrick |
| 10/14/2009 | CN201326380Y Drill cushion block suitable for component with circular surface |
| 10/14/2009 | CN201326375Y Combined rock drill |
| 10/14/2009 | CN101555770A Crawler type direct and reverse circulation drilling machine |
| 10/14/2009 | CN100549358C Fish bone type branch well drilling and completing method |
| 10/13/2009 | US7600585 Coiled tubing drilling rig |
| 10/13/2009 | US7600570 Drilling rig placed on the sea bed and equipped for drilling of oil and gas wells |
| 10/08/2009 | WO2009089528A3 Subsea drilling system and method for operating the drilling system |
| 10/08/2009 | WO2009089524A3 Method and device for subsea wire line drilling |
| 10/07/2009 | CN101550806A Method for implementing drilling machine accurate butt-joint |
| 10/01/2009 | WO2009117813A1 System and method for drilling multiple wells |
| 10/01/2009 | US20090242276 Pump Mechanism for Cooling of Rotary Bearings in Drilling Tools |
| 10/01/2009 | US20090242273 Drill rig and method for controlling a fan therein |
| 09/30/2009 | CN201318130Y Railway passenger transport private line bridge wall-proof drilling hole driller support |
| 09/30/2009 | CN201318129Y Headframe adjusting base |
| 09/29/2009 | CA2660255A1 Apparatus for flexibly restraining service loops in an oil derrick to prevent entangling of the loops |
| 09/23/2009 | CN101538987A Anchoring drilling machine based on working mode of double-pump complementation automatic merging |
| 09/17/2009 | WO2009111845A1 Collapsible drilling rig |
| 09/17/2009 | CA2716937A1 Collapsible drilling rig |
| 09/16/2009 | CN201310303Y Tractor hoist and auxiliary support vertically arranged oil-gas testing derrick device |
| 09/09/2009 | CN100537997C Construction device comprising a mast having a pivotable deflecting device |
| 09/08/2009 | US7584796 Drilling rig |