E21B 3 - Rotary drilling - Patents Sitemap

Patents for E21B 3 - Rotary drilling (4,061)
12/2011
12/29/2011	WO2011109075A3 Dual top drive systems and methods
12/28/2011	EP2400107A2 Flexibly restraining service loops in an oil derrick
12/28/2011	CN202090827U 电动钻井机 Electric drilling machine
12/28/2011	CN202090826U 一种具有防泥水渗入功能的旋挖钻机动力头 Having an anti-infiltration function mud rotary drilling rig power head
12/22/2011	US20110308863 Bottom roller drive for deep soil mixing system
12/21/2011	CN202081819U 黄河河道防凌爆破钻冰机 Yellow River Ice Prevention drilling ice blasting machine
12/21/2011	CN202081818U 旋挖式垃圾山钻井机 Rotary drilling rigs garbage mountain
12/21/2011	CN102287135A 一种钻探设备 A method of drilling equipment
12/21/2011	CN102287133A 用于浅层钻井的转动装置 Means for rotating shallow drilling
12/21/2011	CN102287132A 全套管全回转钻机 A full tube full rotary drilling rig
12/21/2011	CN101131091B 井下煤层压风螺旋钻进机具及使用该机具钻孔的方法 Underground coal seam pressure air screw drilling equipment and the use of the method of drilling equipment
12/14/2011	CN202073500U 旋挖钻机变幅机构 Rotary Drilling Rig luffing mechanism
12/14/2011	CN202073495U Rotating power head of coaxial space moving tooth transmission drilling machine
12/14/2011	CN202073494U Rotary power head of cosine tooth profile drill
12/14/2011	CN202073493U Cfg桩机液压动力头 Cfg pile driver hydraulic power head
12/14/2011	CN202073492U 坑道钻机用双杆双作用伸缩油缸给进装置 Drilling rig with a double pole double-acting telescopic cylinders feeding device
12/14/2011	CN102275842A Rope limiting device and engineering machinery with same
12/13/2011	US8074736 Pneumatic tool with an improved soundproof device
12/08/2011	US20110297446 Traveling and locking centralizer
12/08/2011	US20110297445 Top drive
12/07/2011	CN202065271U 旋挖钻机动力头马达控制装置 Auger drill head motor control device
12/07/2011	CN202064948U Ultra-low surface full hydraulic drilling type coal mining machine
12/07/2011	CN202064830U 采煤工作面用架柱式钻机系统 Coalface rig system with rack column
12/07/2011	CN202064825U 转盘翻转链条箱 Flip turntable chain box
12/07/2011	CN202064824U Rotary power head of coaxial transmission drill
12/07/2011	CN202064823U 一种顶驱冲管支架 One kind of red tube top drive bracket
12/07/2011	CN202064822U 一种多轴式等壁厚大宽度连续墙钻孔机 A multi-axis, such as the wall thickness of the large width of continuous wall drill
12/07/2011	CN102268869A 旋行钻制作地下连续墙的方法及其装备 Rotary drilling production line method of underground continuous wall of their equipment
12/01/2011	US20110290564 Kelly for the realization of bored piles
11/2011
11/30/2011	CN202055819U 一种旋挖钻机及测深系统 One kind of rotary drilling rig and sounding system
11/30/2011	CN202055762U 一种折叠桅杆机构及旋挖钻机 A folding mast agencies and Rotary Drilling Rig
11/30/2011	CN202055761U 旋挖钻机及其变幅机构 Rotary drilling rig and luffing mechanism
11/30/2011	CN202055750U 螺旋型挤密钻孔装置 Compaction spiral drilling equipment
11/30/2011	CN202055749U 挤密钻具 Compaction drill
11/30/2011	CN202055748U 旋挖钻机 Rotary Drilling Rig
11/30/2011	CN102261097A 锯槽机潜钻钻针 Saw slot machine submersible drill needle
11/30/2011	CN102261096A 锯槽机曲轴钻针 Saw slot machines crank drill
11/30/2011	CN101723274B 一种旋挖钻机主卷扬收放控制系统及旋挖钻机 One kind of main winch retractable rotary drilling rig control system and rotary drilling rig
11/30/2011	CN101509355B 双钻杆传动装置及双钻杆瓦斯防突钻 Double drill gearing and double diamond drill gas outburst prevention
11/24/2011	DE102010010036B4 Bohrvorrichtung mit Dichtungsanordnung und Verfahren zum Betrieb einer Bohrantriebseinheit Drilling assembly with sealing assembly and method for operating a Bohrantriebseinheit
11/23/2011	CN202047745U Drilling machine advancing mechanism connected by cosine tooth profile molded surface
11/23/2011	CN202047744U Top-drive main shaft used folio locking device
11/23/2011	CN202047743U Driving system of machinery/ compound drilling machine
11/23/2011	CN102251767A Full trajectory control system of masts of rotary drilling rig and control method thereof
11/23/2011	CN102251760A Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well
11/23/2011	CN102251522A Filling pile coring method and combined concrete coring device
11/23/2011	CN102251518A Rotary pump perforating piling machine
11/17/2011	WO2011140648A1 Pull-down method and equipment for installing well casing
11/17/2011	US20110280104 Dual top drive systems and methods for wellbore operations
11/17/2011	CA2799429A1 Pull-down method and equipment for installing well casing
11/16/2011	CN202039781U Multifunctional drilling device
11/16/2011	CN202039775U Pile hole forming device utilizing vibration, rotation and extrusion
11/16/2011	CN202039772U Rock burst predicting device according to temperature of coal dust of drill hole
11/16/2011	CN202039771U Long-spiral grouting and guncreting multifunctional drilling tool
11/16/2011	CN202039770U Hole drill
11/16/2011	CN102242602A Spiral pile drilling machine
11/16/2011	CN101942830B Construction method of combined concrete soil pile with core pile
11/10/2011	WO2011139947A2 Top drive
11/09/2011	CN202031599U Hydraulic drilling machine
11/09/2011	CN202031488U Supporting device and engineering machine
11/09/2011	CN202031485U Rotary drilling rig and rotary drilling machine
11/09/2011	CN202031478U Novel hydraulic blasting drill rig
11/09/2011	CN202031473U Hydraulic power piling drill rig
11/09/2011	CN202031080U Hole drilling, disc rotationally-expanding and hole cleaning all-in-one machine
11/09/2011	CN102235152A Hole-forming construction method for bored pile on high-strength stabilized soil layer
11/09/2011	CN102235150A Drilling rig
11/03/2011	US20110266064 Feed cable system for a tower of a drilling machine
11/02/2011	CN202023500U Fixing device for turnplate of variable-frequency drilling machine
11/02/2011	CN202023499U Piling machine for holing through rotary pump
11/02/2011	CN202023498U Oil supply system of rotary drilling rig
11/01/2011	US8047306 Top drive drilling system and other applications using a low speed direct drive AC motor
11/01/2011	US8047057 Output mode switching apparatus
10/2011
10/26/2011	EP2255059B1 Hydraulic connector apparatuses and methods of use with downhole tubulars
10/26/2011	CN202017450U Novel vehicle-mounted auger drill
10/26/2011	CN102226406A Construction method of super-long advanced anchor bars
10/26/2011	CN102226374A Rotary power head of coaxial transmission drilling machine
10/26/2011	CN102226342A Multi-functional piling machine for jet grouting pile-sinking
10/25/2011	CA2749221A1 Thrust bearing assembly for a wireline-operated directional core barrel drill
10/20/2011	WO2009135223A3 Tubular handling apparatus
10/19/2011	CN202012523U Split hydraulic system of all hydraulic tunnel drilling machine
10/19/2011	CN202012301U Drill rod lifting and extracting device for rotary drilling rig
10/19/2011	CN202012291U Compound box for vehicle-mounted drilling and workover rigs
10/19/2011	CN202012290U Special workover rotary table for oil field
10/19/2011	CN202012289U Mechanical soft-start long-stroke drilling machine
10/19/2011	CN102220864A Hydraulic control system for rotation system of horizontal directional drilling machine
10/19/2011	CN102220836A Rotating power head of coaxial space movable tooth transmission drill
10/19/2011	CN101649721B Hydraulic rotary anchor head
10/18/2011	US8037948 Drilling machine
10/12/2011	CN202007629U Special drilling machine for earthen site protection
10/12/2011	CN102213075A Rotary power head of cosine tooth profile drilling machine
10/11/2011	CA2611036C Top drive interlock
10/05/2011	CN202001411U Power head and walk interlocking device of rotary drilling rig
10/05/2011	CN202000992U Rotation control system for upper part of rotary drill rig
10/05/2011	CN202000922U Buffer device for power head of rotary drilling rig
10/05/2011	CN202000890U Multi-shaft equal-wall thickness continuous wall drilling machine
10/05/2011	CN202000889U Improved structure capable of adjusting gate lock torsion
10/05/2011	CN202000888U Motor type anchor rod drilling machine
10/05/2011	CN201999674U Winch rope pressing device for rotary drilling machine
09/2011
09/29/2011	US20110232933 Electrical power tool
09/29/2011	US20110232919 Top drive casing system

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