| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
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| 02/06/2013 | CN102913128A Device for improving stress and stability of rotary drilling machine |
| 02/06/2013 | CN102913122A Rotary drilling rig under all-electric pilot control |
| 01/30/2013 | CN202706934U Mechanical arm support |
| 01/30/2013 | CN202706933U Grouting drilling machine mounting device and open-type shield tunneling machine |
| 01/30/2013 | CN202706932U Double-tower derrick system |
| 01/30/2013 | CN202706913U Slide-type anchoring device |
| 01/30/2013 | CN202706912U Integral push unit of drilling machine |
| 01/30/2013 | CN202706905U Double drill deeply-planted afforestation drilling machine |
| 01/30/2013 | CN202706029U Top-end pulley frame of pile machine with rotary vertical post |
| 01/30/2013 | CN102900374A Shaft sinking tubular steel derrick |
| 01/29/2013 | CA2569323C Rock drilling rig, service platform connected to a rock drilling rig and a roof for a service platform |
| 01/24/2013 | US20130020102 Power Tools |
| 01/24/2013 | US20130020067 Mobile hydraulic workover rig |
| 01/23/2013 | CN202690040U Double-position rotating system for combustion arm |
| 01/23/2013 | CN202690039U Column type combustion beam guardrail |
| 01/23/2013 | CN202689954U Novel sinking headframe for large diameter super-deep vertical shaft |
| 01/23/2013 | CN202689953U Drilling machine tower support |
| 01/23/2013 | CN202689952U Rotating type crown block of engineering driller |
| 01/23/2013 | CN102889059A Mast supporting buffering device and rotary drilling rig using same |
| 01/23/2013 | CN102889058A Landing leg type rock drill and reversing operating mechanism for landing leg type rock drill |
| 01/23/2013 | CN102888843A Rail sliding type piling machine and construction method thereof |
| 01/23/2013 | CN102146770B Drill boom beam structure of propelling beam capable of rotating by 360 degrees |
| 01/22/2013 | CA2558988C Rig mat |
| 01/16/2013 | CN202673166U Damping ladder for electric drill |
| 01/16/2013 | CN202673165U Noise-reduction electric drill ladder bed |
| 01/16/2013 | CN202673164U Well frame positioning device |
| 01/16/2013 | CN202673163U Novel drill boom for mine omnidirectional hydraulic roofbolters |
| 01/16/2013 | CN202673162U Stretching self-positioning device for sleeved derrick |
| 01/16/2013 | CN202673161U Drilling machine with universal rotating disk device used for coal mine underground |
| 01/16/2013 | CN202673160U Connecting seat for transporting workover jig |
| 01/16/2013 | CN202673159U Limiting device of upper mast and lower mast of rotary drilling rig |
| 01/16/2013 | CN202673144U South pole ultralow temperature bedrock drilling equipment |
| 01/16/2013 | CN202673141U Mount type integrated hydraulic rock driller |
| 01/16/2013 | CN102877794A Light bar type feeding stander |
| 01/16/2013 | CN102877793A Modular drilling machine stander |
| 01/16/2013 | CN102877792A Stretchable mast for drilling machine |
| 01/16/2013 | CN102877788A Outburst prevention track drilling machine for laneway excavation |
| 01/16/2013 | CN101892812B Reciprocating drill or electric drill support |
| 01/16/2013 | CN101886527B Connecting device of drilling machine components and operating method for connecting drilling machine components |
| 01/10/2013 | WO2013004956A1 Drilling mast having a double drawing capacity |
| 01/09/2013 | CN202659162U Girder slippage luffing mechanism of horizontal directional drilling machine |
| 01/09/2013 | CN202659161U Self-travelling anchor rope-free workover rig |
| 01/09/2013 | CN202659160U Column supporting pneumatic drilling machine |
| 01/09/2013 | CN202659159U Split-type girder mechanism of horizontal orientation drilling machine |
| 01/09/2013 | CN202659158U Vertical height adjustable drilling device |
| 01/09/2013 | CN202659157U Novel three-section flexible driller room bracket |
| 01/09/2013 | CN202659156U Protector for inclined strut of long auger drilling machine |
| 01/09/2013 | CN202659145U Multipurpose motor-driven variable-frequency drilling machine |
| 01/09/2013 | CN202659141U Dismountable all-hydraulic core drilling machine structure |
| 01/08/2013 | CA2635503C Mobile self-erecting directional drilling rig apparatus |
| 01/08/2013 | CA2582604C Coiled tubing rig |
| 01/02/2013 | CN202646325U Cable dragging device for drilling platform |
| 01/02/2013 | CN202645446U Inhibiting device and rotary drilling rig |
| 01/02/2013 | CN202645445U Column-pressing device for coal mining drilling machine |
| 01/02/2013 | CN202645444U Basement top board drilling device |
| 01/02/2013 | CN202645443U Device for drilling installing hole on suspension rod |
| 01/02/2013 | CN202645424U Quick drilling machine |
| 01/02/2013 | CN202645422U Rapid drilling device special for sand cone method |
| 01/02/2013 | CN202643196U Pulley yoke structure and engineering machinery thereof |
| 01/02/2013 | CN102852464A Hydraulic energy-storage petroleum drilling and repairing machine capable of tripping double joints or three-joint unit |
| 01/02/2013 | CN102061889B Driller tower hoisting device and using method thereof |
| 01/02/2013 | CN101655000B Full-hydraulic top-drive truck-mounted drilling rig |
| 01/01/2013 | US8342264 Device for reducing drilling noise and related methods |
| 12/27/2012 | WO2012174608A1 Mobile support system for a raise-boring rig |
| 12/27/2012 | WO2012148782A3 Offshore fluid transfer systems and methods |
| 12/26/2012 | CN202627981U Electric control device for ground handling high-altitude drilling device |
| 12/26/2012 | CN202627980U Simple dowel bracket for drilled hole of electric hammer |
| 12/26/2012 | CN202627979U Universal supporting base special for drilling machine supporting frame |
| 12/26/2012 | CN202627964U Multi-function full-automatic paying-off, pole-erecting, and hole-digging all-in-one machine |
| 12/26/2012 | CN202627963U Movable guide rail device for rock drill |
| 12/26/2012 | CN202627962U Drilling and digging interchange dual-purpose machine |
| 12/26/2012 | CN202627956U Adjustable rotary drilling rig with lower mast |
| 12/26/2012 | CN102220841B Submarine sampling drilling rig |
| 12/26/2012 | CN102116136B Reverse circulation drill and gripper for same |
| 12/26/2012 | CN102031929B PLC (Programmable Logic Controller) controlled variable-frequency piling machine |
| 12/25/2012 | US8336614 Movable rotary well drilling rig |
| 12/20/2012 | WO2012173559A1 Drilling derrick for offshore drilling incorporating a stressed-skin and offshore platform |
| 12/20/2012 | WO2012173395A2 Drilling system having slot for underwater storage of bop assembly |
| 12/19/2012 | CN202611710U Program control arch drilling machine guide frame |
| 12/19/2012 | CN202611603U Electric drill support |
| 12/19/2012 | CN202611602U Upper axle fixing structure for rotary drilling rig |
| 12/19/2012 | CN202611601U Oil cylinder telescopic type headframe mounting bracket |
| 12/19/2012 | CN202611588U Crawler-type omnibearing hydraulic roofbolter |
| 12/19/2012 | CN202611584U Portable well drilling machine |
| 12/19/2012 | CN202611581U Top-drive drilling machine |
| 12/19/2012 | CN102834584A Alignment assembly, drilling systems, and methods |
| 12/19/2012 | CN102828697A Telescopic overall hoisting derrick device and hoisting method thereof |
| 12/19/2012 | CN102828496A Tool type pile foundation drilling platform based on HSE (Health, Safety and Environmental) management system |
| 12/19/2012 | CN101696620B Drilling system of semi-submersible type drilling platform |
| 12/12/2012 | CN202596603U Cat head supporting mechanism for rotary drilling rig |
| 12/12/2012 | CN202596587U Headframe locking device |
| 12/12/2012 | CN202596586U Ceiling flat roof drilling support |
| 12/12/2012 | CN202596575U Automatic retractable-type working platform for vehicle-mounted under-pressure operation workover rig |
| 12/12/2012 | CN202596574U Novel amplitude variable big triangle mechanism of rotary drilling rig |
| 12/12/2012 | CN102817558A Support device for inclined strut of pile frame |
| 12/12/2012 | CN102817557A Construction device and method for aligning a mast |
| 12/11/2012 | CA2607466C Ac powered service rig |
| 12/06/2012 | WO2012162800A1 Drilling rig system with self-elevating drill floor |
| 12/06/2012 | CA2834709A1 Drilling rig system with self-elevating drill floor |
| 12/05/2012 | CN202579636U Derrick extension damping pulley device |