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)
12/2010
12/02/2010WO2010137798A2 Method and apparatus for drilling large-diameter hole in ground
12/01/2010EP2256285A2 Bearing arrangement for a drilling assembly
12/01/2010EP2255059A1 Hydraulic connector apparatuses and methods of use with downhole tubulars
11/2010
11/25/2010WO2010133135A1 Rotary drilling rig for cast-in-situ tubular pile and piling method thereof
11/25/2010US20100294568 Drawworks device on a drill floor
11/24/2010EP2253795A2 Drive unit
11/24/2010CN201651193U Novel integral belt parallel device
11/24/2010CN201650104U Drilling machine opening and closing rotating disc mechanism used for drilling equipment
11/24/2010CN201650103U All-hydraulic power head
11/24/2010CN201650102U Drilling mechanism of compound rotary drilling rig
11/18/2010US20100288560 Modular rotary drill head
11/17/2010CN201635648U Double dynamical rotary digging drilling machine cooling device
11/17/2010CN201635647U Vibration reduction control device for power head of rotary drilling rig
11/17/2010CN201635646U Coal bed hydraulic drilling device of frame column type
11/17/2010CN201635645U Rotating locating device of rotary drilling rig
11/17/2010CN101886526A Sliding pin type drilling rig and drill stem
11/17/2010CN101886518A Turntable positioning mechanism for drilling machine
11/17/2010CN101082264B Multi-headed isopach deep agitation driller
11/16/2010US7832499 Electric tool with closable air ports
11/11/2010WO2010129944A2 Method and system for integrating sensors on an autonomous mining drilling rig
11/11/2010CA2761047A1 Method and system for integrating sensors on an autonomous mining drilling rig
11/10/2010CN201627532U Concentric double-rotation drilling machine
11/10/2010CN101881133A Rotary drilling rig and deep sounding apparatus thereof
11/09/2010US7828077 Rotary angle tool
11/09/2010CA2563938C Top drive
11/03/2010CN201620866U Turning-over protection device of rotary drilling machine
11/03/2010CN201620758U Rotary drilling machine
11/03/2010CN201620755U Direct and reverse circulation drilling machine
11/03/2010CN201620754U Special drill for coal mining face
11/03/2010CN1995685B Pile forming mechanism with high-pressure-jet gyro bit and pile forming method
11/02/2010US7824247 Portable rapid and quiet drill
10/2010
10/28/2010WO2010123491A1 Stabilizer for pipe handling equipment
10/28/2010US20100270084 Casing Hammer Power Swing-Out Apparatus for Drilling Rig
10/28/2010CA2759377A1 Stabilizer for pipe handling equipment
10/27/2010CN201614886U 采用液压驱动的石油钻机液压转盘 Oil rigs with hydraulic drive hydraulic turntable
10/27/2010CN201614885U 新型钻机传动装置 New rig gear
10/27/2010CN201614884U 一种双动力钻机及其动力头装置 A dual power drill and power head unit
10/27/2010CN101871315A Portable optical cable identifying embedded hole boring device
10/27/2010CN101871222A Method for controlling motion of mast oil cylinder of revolving drilling rig and system
10/21/2010US20100263934 Method of protecting a top drive drilling assembly and a top drive drilling assembly modified in accordance with this method
10/20/2010CN101864901A Drilling machine capable of rapidly and accurately locating
10/20/2010CN101864893A Screw rod drilling tool
10/15/2010CA2663348A1 Method of protecting a top drive drilling assembly and a top drive drilling assembly modified in accordance with this method
10/13/2010CN201606082U 新型管棚钻机 The new pipe roof rig
10/13/2010CN201606078U 齿链式切石设备 Tooth chain cut stone equipment
10/13/2010CN201606001U 页岩钻孔机 Shale drilling machine
10/13/2010CN201605994U 五轴大扭矩转盘装置 Five-axis high-torque turntable device
10/13/2010CN101858197A Drive unit for a drilling or construction device
10/13/2010CN101858196A Low gravity center three-axle spiral drilling machine and drilling method thereof
10/12/2010US7810584 Method of directional drilling with steerable drilling motor
10/12/2010CA2493552C Device for simultaneously casing a hole while drilling
10/07/2010US20100252329 Bearing assembly inner barrel and well drilling equipment comprising same
10/07/2010US20100252328 Tapered surface bearing assembly and well drilling equipment comprising same
10/06/2010EP2236734A1 Drive unit with alignment means
10/06/2010EP2236733A1 Drive unit for a drilling or construction device
10/06/2010EP2235315A2 Top drive system
10/06/2010CN201598983U 一种旋挖钻机及其旋挖钻具 One kind of rotary drilling rig and auger drilling
10/06/2010CN201598979U 一种挖掘机型式液压平动钻机 One kind of type hydraulic excavator translational rig
10/06/2010CN201598974U 大型旋挖钻机双发动机动力装置 Large rotary drilling rig twin-engine power plant
10/06/2010CN201598973U 全液压岩心钻机平移式动力头 Translational full hydraulic core drilling rig power head
10/06/2010CN1769642B Machine for drilling well in shallow stratum
10/06/2010CN101852064A Hydraulic waste drilling machine
10/06/2010CN101319596B Short distance speed-increasing type hard rock deep borehole drilling device
09/2010
09/30/2010WO2010111613A1 Helical drilling apparatus, systems, and methods
09/30/2010WO2010017367A3 Percussion assisted rotary earth bit and method of operating the same
09/30/2010US20100243327 Hydraulic control system for drilling systems
09/30/2010CA2755628A1 Helical drilling apparatus, systems, and methods
09/29/2010CN201593381U Rotary speed reducer mounting base of rotary drilling rig
09/29/2010CN101845937A All-hydraulic power head
09/29/2010CN101844588A Crawler tension device and crawler-type engineering machinery
09/29/2010CN101018925B Top drive
09/22/2010CN201588532U Pneumatic power installation for high-pressure heavy-load oil rig taps
09/22/2010CN201588531U Integrated rotary head for drilling machine
09/22/2010CN201588530U Handheld emulsion drilling machine used in coal mines
09/21/2010US7798250 Bearing assembly inner barrel and well drilling equipment comprising same
09/16/2010US20100230168 Underground boring machine and method for controlling underground boring
09/15/2010CN201581823U Drilling tool of thermal spraying ceramic screw
09/15/2010CN201581802U Large-torque deep hole drilling machine
09/15/2010CN201581801U Power head with high-speed soil throwing function for rotary drilling rig
09/15/2010CN201581800U Adjustable hydraulic brake
09/15/2010CN201581799U Hydraulic power small-sized drilling machine
09/15/2010CN101832100A Piling machinery and sluice gate device thereof
09/15/2010CN101387186B Mining hydraulic drilling rig linkage hydraulic system
09/14/2010US7794355 Planetary gear set centering ring
09/14/2010US7793719 Top drive casing system
09/09/2010US20100224382 Noise elimination brake for automatic spindle locking mechanism
09/08/2010CN201574686U Handheld double-power well-point drilling machine
09/08/2010CN101824961A Multifunctional motive power head of full hydraulic drilling machine
09/08/2010CN101824960A Full-hydraulic screw drilling machine
09/07/2010US7789172 Tapered bearing assembly cover plate and well drilling equipment comprising same
09/07/2010US7789169 Driver configuration for a power tool
09/02/2010US20100218998 Upper Beam for a Telescopic Feeder, Telescopic Feeder and drilling device for rock drilling
09/01/2010EP2126270B1 A top drive apparatus
09/01/2010CN201567959U Boring machine for embedding electric column
09/01/2010CN201567950U Auger drill power head capable of being provided with various specifications and types of drill rods
08/2010
08/25/2010CN201560720U Novel bit shank sleeve and corresponding drilling device
08/25/2010CN201560711U Horizontal direction finder power head convenient for being disassembled
08/25/2010CN201560704U Unit head sliding device and horizontal directional drilling machine with the same
08/25/2010CN101812965A Method for driving drill of drilling machine
08/19/2010WO2010048521A3 Coupling for downhole tools
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