| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
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| 03/27/2013 | CN202832193U Hydraulic transmission drilling machine |
| 03/27/2013 | CN1987040B Synchronous control device for petroleum drilling rig derrick and base hydraulic lifting |
| 03/27/2013 | CN102996077A High punch positioning device |
| 03/27/2013 | CN102996073A Small module assembled offshore platform drilling machine |
| 03/27/2013 | CN102996072A Multifunctional cutting drilling machine |
| 03/27/2013 | CN102996071A Guide rail seat for train-type translation device |
| 03/27/2013 | CN102996065A Rotary drilling rig with circular tube type extension-type travelling chassis |
| 03/27/2013 | CN102995689A Pond digging tool for telegraph poles |
| 03/27/2013 | CN102080501B Mineral deep hole drilling carriage unit |
| 03/26/2013 | US8403072 Trigger profile for a power tool |
| 03/26/2013 | US8403065 Fluid connection to drilling riser |
| 03/20/2013 | CN202810674U Counterweight fixing structure and rotary drilling rig comprising same |
| 03/20/2013 | CN202810673U Hydraulic rock drill guide device with adjustable center |
| 03/20/2013 | CN202810672U Gate column set |
| 03/20/2013 | CN202810671U Windproof guardrail |
| 03/20/2013 | CN202810651U Outburst prevention crawler drilling machine for excavation roadway |
| 03/20/2013 | CN202810646U Drilling machine and forcing mechanism thereof |
| 03/20/2013 | CN102979457A High-altitude drill positioning method of building |
| 03/20/2013 | CN102277981B Underwater drilling and cutting construction method of reinforced concrete structure |
| 03/20/2013 | CN102251744B Annular patio drilling machine |
| 03/20/2013 | CN102003152B Lip type reversing coupling double-spiral blade type vortex induced vibration restraining device for deep sea vertical pipe |
| 03/15/2013 | CA2788934A1 Well pad placement |
| 03/14/2013 | WO2012173395A3 Drilling system having slot for underwater storage of bop assembly |
| 03/13/2013 | CN202789789U Anti-shake hydraulic system of rotary drilling rig |
| 03/13/2013 | CN202788705U Positioning device for drilling and coring of outer heat-insulation layer of exterior wall |
| 03/13/2013 | CN202788669U Angle-adjustable pulley bracket |
| 03/13/2013 | CN202788636U Synchronous lifting hydraulic control device for truck-mounted rig |
| 03/13/2013 | CN202788635U Horizontal hydraulic drilling rig |
| 03/13/2013 | CN202788634U Lifting folding derrick substructure |
| 03/13/2013 | CN202788633U Adjustable mine drill support |
| 03/13/2013 | CN202788612U One-piece drilling machine derrick and base integral movement device |
| 03/13/2013 | CN202788601U Drilling construction detection device |
| 03/13/2013 | CN102966312A Operation platform device for wellhead operation |
| 03/13/2013 | CN101769128B Connecting mechanism for dual shaft drilling machine |
| 03/12/2013 | US8393790 Light metal feed beam for use on a drill rig |
| 03/12/2013 | US8393416 Drilling rig and mounting method therefor |
| 03/07/2013 | WO2011135541A3 Modular multi-workstring system for subsea intervention and abandonment operations |
| 03/07/2013 | CA2835612A1 Pinned structural connection using a pin and plug arrangement |
| 03/06/2013 | CN202767898U Traction connection seat device for 100-ton one-way pendulum petroleum drilling machine equipment |
| 03/06/2013 | CN202767897U Luffing mechanism |
| 03/06/2013 | CN202767896U Auxiliary heightening frame mechanism |
| 03/06/2013 | CN202767895U Lifting device used for deep drill rig |
| 03/06/2013 | CN202767880U Sliding tower mechanism of trenchless pipe laying driller |
| 03/06/2013 | CN202767878U Multifunctional all-hydraulic drill |
| 03/06/2013 | CN202767871U Round steel tube penetration type movable arm body |
| 03/06/2013 | CN202766217U Lifting mechanism |
| 03/06/2013 | CN102953687A Ceiling drilling equipment |
| 03/06/2013 | CN102953675A Engineering machinery large arm with gas storage structure |
| 03/06/2013 | CN102287142B Drill arm device capable of rotating 360 degrees |
| 03/06/2013 | CN101967957B Top drive guide rail plate butting device |
| 03/06/2013 | CN101929312B Method for increasing well slots without stopping production on offshore petroleum platform |
| 03/06/2013 | CN101688432B Method and apparatus for drilling hole into bedrock |
| 03/05/2013 | CA2716103C Method and apparatus for facilitating assembly and erection of a drilling rig |
| 02/28/2013 | WO2013028558A2 All electric powered mobile jumbo drill machine |
| 02/28/2013 | WO2013028409A2 Riser system |
| 02/28/2013 | WO2012138912A3 Offshore top tensioned riser buoyancy can system and methods of field development |
| 02/28/2013 | US20130048377 Underwater drilling arrangement and method for making a bore |
| 02/28/2013 | CA2844104A1 All electric powered mobile jumbo drill machine |
| 02/27/2013 | CN202755906U Subway viaduct retaining wall drilling machine |
| 02/27/2013 | CN202755905U Automatic folding device used in pylon |
| 02/27/2013 | CN202755889U Multi-angle roadway light-duty drilling machine |
| 02/27/2013 | CN202755887U Low-gravitational-center turnplate triaxial mixing drill |
| 02/27/2013 | CN202755886U Tunnel perforating machine |
| 02/27/2013 | CN102943632A Precise positioning and controlling system of novel rotational type drilling machine base |
| 02/27/2013 | CN102943631A Light multifunctional drilling rig |
| 02/27/2013 | CN102943630A General drilling stand for light geological drilling rig |
| 02/27/2013 | CN102943622A Support with fixable front end for horizontal directional drilling machine |
| 02/27/2013 | CN102943621A Portable drilling machine capable of implementing wire-line core drilling |
| 02/27/2013 | CN102943468A Multi-axial mixing pile device capable of reducing soil extrusion and application thereof |
| 02/27/2013 | CN102220846B Ground tower lifting device for quadrangular drill tower |
| 02/20/2013 | EP2558675A1 Device and method for handling drill string components and drill rig |
| 02/20/2013 | CN202745777U Small electric geological core drilling machine |
| 02/20/2013 | CN202745739U Rotary drilling rig and cathead thereof |
| 02/20/2013 | CN202745705U Work platform for down-the-hole drill |
| 02/20/2013 | CN202745693U Pushing mechanism of in-the-hole drill |
| 02/20/2013 | CN202745692U Integrated core drilling machine for single cylinder with double functions tower crane |
| 02/20/2013 | CN202745691U Full-hydraulic multifunctional open-air mining drilling machine |
| 02/20/2013 | CN202745688U Shallow hole drilling machine for geological exploration |
| 02/20/2013 | CN202745064U Hydraulic walking pile frame with composite masts |
| 02/20/2013 | CN102937004A Coordinated hoisting control system of foldable type drilling machine base |
| 02/19/2013 | CA2563738C System and vessel for supporting offshore fields |
| 02/14/2013 | WO2013022430A1 Systems and methods for a modular drum with a common power pack unit |
| 02/13/2013 | EP2556206A1 Alignment assembly, drilling systems, and methods |
| 02/13/2013 | CN202731759U Self-lock device for well drill zipper |
| 02/13/2013 | CN202731758U 旋挖钻机 Rotary Drilling Rig |
| 02/13/2013 | CN202731747U Combined type tower-drill integrated core drill |
| 02/13/2013 | CN202731746U Vehicular full hydraulic coring machine designed through combination of modules |
| 02/13/2013 | CN102926667A Drill floor towing device |
| 02/13/2013 | CN102926666A Telescopic diamond pressing machine for drilling of top plate |
| 02/13/2013 | CN102926659A Train-type automatic translational device for drill |
| 02/13/2013 | CN102926658A Wheel drilling machine |
| 02/13/2013 | CN102926652A Novel rotary drilling rig |
| 02/06/2013 | CN202718629U Telescopic supporting mechanism for horizontal directional drilling machine |
| 02/06/2013 | CN202718628U Underground cavern horizontal tunneling peripheral hole frame |
| 02/06/2013 | CN102913267A Omnibearing roadway anchoring and supporting integrated machine |
| 02/06/2013 | CN102913139A Train type translation leveling device and method |
| 02/06/2013 | CN102913138A Retractable derrick |
| 02/06/2013 | CN102913137A Sinking tubular steel derrick and mounting method of same |
| 02/06/2013 | CN102913130A Full-hydraulic rock-drilling excavator using hydraulic excavator for production |
| 02/06/2013 | CN102913129A Small-size agricultural well drill |