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 3 - Rotary drilling
Patents for E21B 3 - Rotary drilling (4,061)
08/2012
08/29/2012CN202401979U Goose head structure used for drilling machine and long spiral drilling machine using same
08/29/2012CN202401978U Deep hole drilling machine
08/29/2012CN202401965U Vehicle-mounted long auger
08/29/2012CN202401962U Top drive support
08/29/2012CN202401961U Long spiral deep hole drill
08/29/2012CN102162248B Method for forming variable-cross-section compaction thread pile and compaction drilling tool
08/29/2012CN101915065B Hemispherical drill stem for rotary drilling rig
08/28/2012US8254125 Machine tool with a heat conduction structure
08/23/2012WO2012109699A1 A gear and clutch assembly
08/22/2012CN202391341U Labyrinth sealing structure for power head of rotary drilling rig
08/22/2012CN202391340U Long spiral drilling machine
08/22/2012CN202391339U Rotary drilling rig with automatically assembled and disassembled balance weight and adjustable barycenter
08/22/2012CN102644697A Novel power transmission mechanism of all-hydraulic drill
08/22/2012CN102644439A Rotating drilling rig enabling soil-discharging push plate to be automatically reset and construction method thereof
08/22/2012CN102640598A Multifunctional pull type trench excavator
08/21/2012CA2695669C Automatic false rotary
08/21/2012CA2641618C Top drive for casing connection
08/16/2012WO2012109090A2 Helical drilling apparatus, systems, and methods
08/16/2012CA2826782A1 Helical drilling apparatus, systems, and methods
08/15/2012CN102635308A Drilling rig power head
08/15/2012CN101994516B Control system for anchor rod machine and anchor rod machine with same
08/09/2012US20120199396 Drill rig and associated drill rig traverse system
08/08/2012CN202370945U Hydraulic motor system for power head of self-cooling rotary drilling rig and rotary drilling rig
08/08/2012CN202370427U Comprehensively multifunctional cast-in-situ bored pile machine
08/08/2012CN101852064B Hydraulic waste drilling machine
08/02/2012WO2012102643A1 Cooling method and cutting instrument
08/02/2012DE102008034083B4 Erdbohrvorrichtung Boring apparatus
08/01/2012EP2480744A2 Systems and methods for improving drilling efficiency
08/01/2012CN202360669U Cylinder bottom fixed damping device of pressurizing oil cylinder of rotary drilling rig
08/01/2012CN202360020U Floating device of drilling and exploring machine
08/01/2012CN102619882A Self-circulation cooling device of gyrator
08/01/2012CN102619465A Method and device for braking revolution of upper car of rotary drilling rig
08/01/2012CN102619464A Geological engineering drilling jig and oil delivery control method thereof
07/2012
07/31/2012US8230933 Top drive casing system
07/26/2012DE102011000320A1 Drilling rig for carrying out drilling in soil, comprises drilling frame, and drive unit slidably arranged on frame, where drive unit has rod cartridge for detachably connecting with drilling pipe, and drive motor standing with cartridge
07/25/2012CN202348859U Detachable spline of power head
07/25/2012CN202348805U Sequence valve for auxiliary winch of rotary drilling rig
07/25/2012CN202348111U High-accuracy anti-vibration rotary drilling rig revolving system
07/25/2012CN202348110U Pure electric hydraulic rotary drilling rig
07/25/2012CN102607770A Rotary drilling rig, gravity center detecting device and detecting method for rotary drilling rig
07/25/2012CN102606131A Top drive control system of hydraulic drive
07/25/2012CN102606071A Multifunctional road pile drilling machine
07/25/2012CN102606067A Drilling-in tool for screw type ground drill
07/25/2012CN102182177B Integrated machine capable of drilling holes, rotating and expanding disk and cleaning holes
07/25/2012CN101936131B Rotary drilling rig
07/19/2012WO2012094746A1 Top drive output torque measurement method
07/19/2012US20120181083 Top Drive Output Torque Measurement Method
07/18/2012CN202337661U Lifting and rotating combined driving device
07/18/2012CN102587829A Drilling tool and piling machine
07/18/2012CN102587826A Drill arm assembly for multifunctional road pile drilling machine
07/18/2012CN102587825A Linkage hydraulic system for fully hydraulic drilling machine for coal mines
07/18/2012CN101824961B Multifunctional motive power head of full hydraulic drilling machine
07/12/2012US20120175143 Remotely adjustable feed system
07/11/2012CN202325523U 一种微型自动取样钻机 A miniature automatic sampling rig
07/11/2012CN202325270U 波浪补偿分离式液压钻机 Heave Compensation separate hydraulic rig
07/11/2012CN202325262U 一种深孔钻机 One kind of deep hole drilling machine
07/11/2012CN202325259U 一种螺旋钻机 In a spiral rig
07/11/2012CN202325234U 多功能全液压钻机 Multifunctional Hydraulic Drill
07/11/2012CN202325230U 一种集吊机于一体的步履式旋挖钻机 A set of cranes in one of the walking type rotary drilling rig
07/11/2012CN202325229U 一种钻机动力系统以及使用该动力系统的钻机 A drill rig to use the system as well as the power system
07/11/2012CN202325228U 动力头及使用该动力头的长螺旋钻机 Power head and use the power head long auger
07/11/2012CN202325227U 旋挖钻机动力头驱动套筒 Auger drill head drive sleeve
07/11/2012CN202325226U 一种长螺旋钻机 A long-auger
07/11/2012CN202325225U 一种铁路施工螺旋钻注机 A railway construction auger injection machine
07/11/2012CN202324048U 一种液压中央回转体 A hydraulic central rotary body
07/11/2012CN102561941A Rotary drilling rig and pore-forming state detection device thereof
07/11/2012CN102561940A Mechanical single-arm type hydraulic roof-bolter
07/11/2012CN102561939A Pipe shed drilling rig with front-mounted and rear-mounted lifting mechanisms
07/11/2012CN102561938A Pipe shed drilling rig with front-mounted and rear-mounted synchronous double rotating disc mechanisms
07/11/2012CN102561349A Multifunctional static pile press
07/11/2012CN102561325A Pile-forming drilling tool
07/11/2012CN102002941B Large-aperture long screw rig, reinforcement cage concreting device and fabricating method of large-aperture deep pile
07/04/2012CN202300197U 背包式集成底座轻便钻机 Backpack-style integrated pedestal portable drilling rig
07/04/2012CN202300196U 径向进水、气的动力头 Radial water, gas, power head
07/04/2012CN202300195U 轴向进水、气的动力头 Axial water, gas, power head
07/04/2012CN202300194U 水平定向钻机用缓冲动力头 Horizontal directional drilling buffer power head
07/04/2012CN202300193U 波浪补偿分离式液压钻机用动力头 Heave Compensation separate hydraulic drills, power head
07/04/2012CN202300192U Underground drilling rig and hydraulic power head device thereof
07/04/2012CN202300191U 一种旋挖钻机的回转装置 One kind of rotary drilling rig rotary device
07/04/2012CN202300190U 一种旋挖钻机的双回转动力箱 One kind of rotary drilling rig dual rotary power box
07/04/2012CN202300189U 一种旋挖钻机动力头 One kind of rotary drilling rig power head
07/04/2012CN202300188U 防卡钻液压系统 Anti-sticking hydraulic system
07/04/2012CN102536190A Rotary drilling rig and integrated control system thereof
07/04/2012CN102536146A Drilling bucket and rotary drilling rig
07/04/2012CN102536116A Bifunctional rotary digging machine
07/04/2012CN102536111A High-torque drilling machine with power-shifting gearbox
07/04/2012CN102536110A Spiral drilling machine
07/04/2012CN102535445A Molding device and molding method for long spiral extruding rock-entering cast-in-place pile
07/04/2012CN101787853B Guide rail for drilling-production equipment and connection method thereof
07/04/2012CN101699018B Automatic continuously variable transmission (CVT) drilling and repairing well top drive
06/2012
06/28/2012US20120160570 Modular top drive lubrication system and methods
06/27/2012CN202284452U 一种旋挖钻机的三级缓冲装置 Three buffer means a rotary drilling rig
06/27/2012CN101956524B Rotary drilling rig and power head gearing thereof
06/27/2012CN101575940B Drilling operation method by utilizing dual drill drilling system
06/26/2012CA2651154C Method and apparatus for oscillating a drill string
06/21/2012US20120152619 Apparatus and method for position-sensitive pipe provisioning in top-drive drilling
06/20/2012CN202280526U 一种可降低旋挖钻机油耗的控制装置 One kind of rotary drilling rig can reduce the fuel consumption of the control device
06/20/2012CN202280422U 副转盘系统 Vice turntable system
06/20/2012CN202280421U 一种旋挖钻机的无随动动力装置 One kind of rotary drilling rig no follow-power plant
06/20/2012CN202280420U 一种旋挖钻机的液压动力装置 A rotary drilling rig hydraulic power unit
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