Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 15 - Supports for the drilling machine, e.g. derricks or masts
Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619)
07/2012
07/04/2012CN102536116A Bifunctional rotary digging machine
07/04/2012CN102536110A Spiral drilling machine
07/04/2012CN102535444A Cavern-pile mechanical construction method for shallow subsurface excavated metro station at water-rich sandy stratum
07/04/2012CN101787853B Guide rail for drilling-production equipment and connection method thereof
07/04/2012CN101387188B Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof
06/2012
06/28/2012WO2012087119A1 Drilling installation and offshore drilling vessel with drilling installation
06/28/2012WO2012083364A1 Drilling orientation apparatus
06/28/2012WO2012061562A3 Offshore tower for drilling and/or production
06/27/2012CN202284449U 一种新型海洋石油钻机底座 A new offshore oil drilling rig
06/27/2012CN102518401A Hydraulic-driving two-level feeding cylinder-oriented symmetrically-arranged jumbolter
06/27/2012CN102518400A Mast supporting assembly
06/27/2012CN102518399A Mast and long spiral drilling machine using same
06/27/2012CN102518397A Tension mooring type underwater drilling system and mounting method for same
06/27/2012CN102518396A Automatic drilling machine
06/27/2012CN102518394A Hydraulic driving two-stage feeding dovetail groove guiding asymmetrically-arranged anchor drilling machine
06/27/2012CN101761309B Stoper
06/27/2012CN101644139B Temporary supporting device for assembling a large derrick structure and use method thereof
06/27/2012CN101619646B Engineering plant and mast support thereof
06/23/2012CA2726381A1 Support assembly for a drive mechanism for the installation of geothermal conduits adjacent a foundation wall inside or outside a building structure
06/21/2012WO2012082779A2 Method, system and apparatus for deployment of umbilicals in subsea well operations
06/21/2012US20120152537 Auger for gas and liquid recovery from regolith
06/21/2012CA2726088A1 A mobile lift platform
06/20/2012CN102505920A Two-winch hydraulic lifting drill tower
06/20/2012CN102505690A Three-fulcrum anti-overturning protecting device for pile frame
06/19/2012CA2610005C Well servicing support structure
06/14/2012WO2012054440A3 Offshore tower for drilling and/or production
06/13/2012CN202273598U Removable servo frame
06/13/2012CN202273597U Mast of drilling machine and rotary drilling machine
06/13/2012CN202273596U Stand mast device for rotary drilling rig
06/13/2012CN202273595U Large triangular support mechanism of rotary drilling rig
06/13/2012CN202273594U Three-section connecting rod support device for rotary drilling rig
06/13/2012CN202273593U 用于旋挖桅杆上的额头 For rotary drilling mast on forehead
06/13/2012CN102493815A Drill loader working device
06/13/2012CN102493770A Lifting type corner foundation
06/13/2012CN102493765A Spiral hammer
06/07/2012WO2012044919A3 Elevated platform systems including fiber reinforced composite panels
06/07/2012WO2012028974A3 System and method for conducting operations to subterranean formations
06/07/2012US20120138327 Drilling rig with hinged, retractable outriggers
06/06/2012CN202266259U 两臂顶帮锚杆锚索施工钻车升降平台上的脚踏翻板装置 Top arms flap means to help foot drill bolt and cable car construction lifting platform
06/06/2012CN202266196U 一种两臂顶帮锚杆锚索施工钻车的钻臂装置 A top arms to help the construction boom means drilling bolt and cable cars
06/06/2012CN202266195U 凿岩推进梁箱式定位装置 Drilling advance box beam positioning device
05/2012
05/31/2012WO2012033793A3 Two speed direct drive drawworks
05/30/2012EP2456947A2 Offshore drilling system
05/30/2012CN202251399U Bearing locking device used for hoisting derrick
05/30/2012CN202250071U Dual-purpose drilling and loading machine of tunnel
05/30/2012CN202249797U Framework of drilling rig
05/30/2012CN202249796U Connecting device for rotary drilling machine
05/30/2012CN202249795U Hydraulic drilling machine
05/30/2012CN202249794U 旋挖钻机 Rotary Drilling Rig
05/30/2012CN202249793U Inclined strut adjusting mechanism of drilling machine
05/30/2012CN202249792U Foldable inclined strut device
05/30/2012CN202249791U Automatic anti-creeping device for two sections of headframes of workover rig
05/30/2012CN202249759U Longitudinally and transversely moving guide rail structure of main machine of drilling machine
05/30/2012CN202249757U Drilling machine of tractor
05/30/2012CN202249743U Long spiral drilling machine
05/30/2012CN202249735U Full-sleeve full-rotation drilling machine
05/30/2012CN202247863U Rhinestone pile driver
05/30/2012CN101799106B Supporting device for thin and long rod piece
05/30/2012CN101798906B Supporting device
05/29/2012US8186926 Drill rod handler
05/24/2012WO2012067329A1 Temperature and pressure monitoring system of sealed derrick structure
05/23/2012CN202227996U Carriage frame for drilling machine
05/23/2012CN202227995U Novel cementing wellhead operation platform
05/23/2012CN202227994U Thick coal seam fully mechanized surface omnibearing hydraulic drilling machine
05/23/2012CN202227993U Split support used for long-screw rotary drilling rig and long-screw rotary drilling rig using split support
05/23/2012CN202227992U Drilling mast protection device for rotary drilling machine
05/23/2012CN202227991U Device for locking second-section derricks of workover rig by adopting cylinders
05/23/2012CN202227990U Beam bottom bar planting hole forming device
05/23/2012CN202227983U High-stand engineering drilling machine
05/23/2012CN102472083A 海上钻井系统 Offshore Drilling System
05/23/2012CN102465666A 一种旋挖钻机 One kind of rotary drilling rig
05/23/2012CN101923357B Mast control system of rotary drilling rig
05/23/2012CN101624896B Double power head drilling equipment
05/23/2012CN101598002B Door frame type drilling machine
05/22/2012CA2720881C Pneumatic drifter with replaceable foot pieces
05/22/2012CA2701102C Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig
05/16/2012CN202220564U Telescopic mast tower for well drill
05/16/2012CN202220563U Pile frame and long auger driller using the pile frame
05/16/2012CN202220562U Hand-type thruster for supporting electric coal drill
05/16/2012CN202220553U Caterpillar type long spiral drilling machine
05/16/2012CN202220551U Crawler type hydraulic drilling rig
05/16/2012CN102454165A Electric pile frame column cross shaft coxal device
05/10/2012WO2012061562A2 Offshore tower for drilling and/or production
05/10/2012WO2012060711A1 Drilling device for use especially during directional drilling for recovery of geothermal energy
05/10/2012WO2012060531A1 Drilling ship for a polar region
05/10/2012WO2012060530A1 Drilling ship for polar region
05/10/2012WO2012060528A1 Damper structure for a sealed derrick
05/10/2012WO2012060527A1 Sealed derrick structure for polar vessels
05/09/2012CN202215155U Drilling construction device for concrete top plate
05/09/2012CN202215154U Angle adjusting mechanism for coal mine drilling rig
05/09/2012CN202215153U Telescopic device of drilling machine mast
05/09/2012CN202215149U Piling vehicle
05/09/2012CN202214964U Lever type electric hammer support
05/08/2012CA2678668C Rig engine control
05/08/2012CA2536945C Ac coiled tubing rig with automated drilling system
05/02/2012CN202209151U Auger boring drilling rig
05/02/2012CN202209150U Device used for short-distance movement of drilling machine along track
05/02/2012CN202209149U Free falling type drilling machine platform
05/02/2012CN102434111A Hydraulically-driven two-stage-feed dovetail-groove-guide symmetrically-arranged anchor rod drilling machine
05/02/2012CN102434098A Hydraulic five-arm anchor drill for coal mine
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