Patents for E21B 4 - Drives for drilling, used in the borehole (6,032)
12/2011
12/21/2011CN102287132A 全套管全回转钻机 A full tube full rotary drilling rig
12/15/2011US20110303464 Fluid Actuated Impact Tool with Solid Piston-Standard Bit Arrangement and Water Seal
12/15/2011US20110303461 Clutch for a Jack Element
12/14/2011EP2393991A1 Arrangement for a down-the-hole hammer drill for use in soil consolidation through jet grouting
12/14/2011CN102282333A 阀控井底马达 VRLA downhole motor
12/14/2011CN102278062A 金刚石复合齿 Diamond composite teeth
12/14/2011CN102278061A 用于水平定向钻机动力传动装置上的液压系统 Hydraulic systems on the horizontal directional drilling power transmission apparatus
12/08/2011US20110297447 Pressure Reversing Valve Assembly For a Down-the-Hole Percussive Drilling Apparatus
12/08/2011US20110297397 Deployment of downhole pump using a cable
12/07/2011CN202065352U 用于涡轮钻具的径向滑动轴承 Radial sliding bearings for turbodrill
12/07/2011CN202064826U 一种钛合金挠性万向轴 Titanium alloy flexible cardan shaft
12/07/2011CN102268962A 一种具有压力补偿功能的油密封螺杆钻具传动轴总成 Oil seal having a pressure compensation screw drill shaft assembly
12/07/2011CN102268961A 一种具有减振功能的螺杆钻具传动轴总成 Screw having a damping function drill shaft assembly
12/06/2011US8069933 Bearing assemblies, and bearing apparatuses and motor assemblies using same
12/06/2011US8069917 Gripper assembly for downhole tools
12/06/2011US8069716 Multi-coupling reduced length measure while drilling apparatus
12/01/2011WO2011149363A1 Enhanced vibrational or hammering apparatus
12/01/2011WO2011084040A3 The method of sealing of moving elements and the device for its realization
12/01/2011CA2800033A1 Enhanced vibrational or hammering apparatus
11/2011
11/30/2011CN202055752U 一种螺杆钻具耐磨传动轴总成 A screw drill wear and drive shaft assembly
11/30/2011CN202055751U 钻机的主传动和变速系统及其操纵机构 Main drive and transmission system and its operating mechanism rig
11/29/2011US8066069 Method and apparatus for wellbore construction and completion
11/29/2011CA2650975C Apparatus and method for selectively orienting a bit
11/24/2011WO2011123765A3 Down-the-hole drill hammer having an extendable drill bit assembly
11/23/2011EP2097608B1 Hydraulically driven tractor
11/22/2011US8062140 Power transmission line section
11/22/2011US8061448 Hydraulic braking device for turbine, turbine equipped with such a device and drilling equipment comprising such a turbine
11/22/2011US8061447 Variable linkage assisted gripper
11/16/2011EP1769131B1 Drill head for a ground-boring device
11/16/2011CN202039904U Turbine stator rotor assembled part and turbine drilling tool
11/16/2011CN202039781U Multifunctional drilling device
11/09/2011EP1885994B1 A device for selective movement of well tools and also a method of using same
11/09/2011CN202031477U Hydraulic power foundation drilling machine
11/09/2011CN202031475U Combined drilling device
11/09/2011CN202031474U Hybrid rotary drilling rig
11/08/2011US8051926 Control device
11/07/2011CA2703339A1 Drilling plugs and the like in wells
11/03/2011WO2011136663A1 A vibrational or a downhole apparatus with a magnetically coupled drive
11/03/2011US20110266067 Down hole hammer having elevated exhaust
11/03/2011US20110266063 Steerable drilling system
11/02/2011CN202023499U Piling machine for holing through rotary pump
11/01/2011USRE42877 Methods and apparatus for wellbore construction and completion
10/2011
10/28/2011CA2701531A1 Reverse torque drive system
10/27/2011US20110259575 Injection of liquid into boreholes, with suckback pulsing
10/20/2011WO2011130123A2 Anchor system and method for anchoring a tool with a positional bias
10/20/2011WO2011129958A2 Reverse circulation hammer with modular bit
10/20/2011WO2011128045A2 Ground-drilling device
10/20/2011US20110253456 Reverse circulation hammer with modular bit
10/20/2011US20110253451 Borehole Impact Rock Breaker
10/20/2011DE102010015465A1 Erdbohrvorrichtung Boring apparatus
10/19/2011CN102220841A Submarine sampling drilling rig
10/19/2011CN102220837A Air distribution anti-swiveling device for combination type down-the-hole hammer reverse circulating method
10/19/2011CN101120155B Integrated magnetic ranging tool
10/16/2011CA2737531A1 Bearing assemblies, bearing apparatuses using the same, and related methods
10/13/2011WO2011126881A2 Undercut stator for a positive displacement motor
10/13/2011CA2794501A1 Undercut stator for a positive displacement motor
10/12/2011CN102216552A Drilling apparatus
10/06/2011WO2011123765A2 Down-the-hole drill hammer having an extendable drill bit assembly
10/06/2011WO2011084233A3 Apparatus and method for reaming a wellbore during the installation of a tubular string
10/06/2011WO2011068842A3 Grip enhanced tractoring
10/06/2011US20110240373 Down-the-hole drill hammer having an extendable drill bit assembly
10/06/2011US20110240370 Drilling motor with a locking collet sleeve stabilizer
10/05/2011EP2372074A2 Apparatus and methods for running liners in extended reach wells
10/05/2011CN202000342U High air pressure pneumatic impact rock penetrating and inserting device for continuous flight auger
10/05/2011CN102209832A Locking clutch for downhole motor
10/05/2011CN102207219A Cylinder control valve for down-the-hole drill
10/04/2011US8028766 Electrically powered tractor
10/04/2011US8028761 Electric power tool
09/2011
09/29/2011WO2011119408A2 Foot valve assembly for a down hole drill
09/29/2011WO2011119155A1 Coiled tubing percussion drilling
09/29/2011US20110232970 Coiled tubing percussion drilling
09/28/2011CN102202823A Spindle drive systems and methods
09/28/2011CN102199989A Automatic drilling machine without drill rod
09/28/2011CN101666207B Energy accumulation type hydraulic hole drilling hammer
09/27/2011US8025110 Motor shaft security apparatus
09/27/2011CA2551981C Improved traction control for downhole tractor
09/21/2011CN201982013U 反循环钻机钻孔、锤击成孔、扩孔、清渣的施工设备 Reverse circulation drilling rig drilling, hammering into the hole, reaming, slag construction equipment
09/21/2011CN201982009U 空心滑阀式液压冲击器 Hollow spool valve impactor
09/21/2011CN102191915A Resonant pulse vibrating drilling device
09/21/2011CN102191913A High-energy reverse circulation large-diameter hole-drilling hammer
09/15/2011WO2011062925A4 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly
09/15/2011US20110220421 Rock drilling machine and axial bearing module
09/14/2011CN201973310U 潜孔钻气缸控制阀 DTH drill cylinder control valve
09/14/2011CN102182751A Radial sliding bearing for turbine drill
09/13/2011CA2557868C Rotating systems associated with drill pipe for conveying electrical power to downhole systems
09/08/2011US20110214919 Dual top drive systems and methods
09/07/2011CN201963205U 电动潜孔冲击钻头 Electric DTH hammer drill
09/07/2011CN201963200U 一种可变角度的轻便型钻机 A variable angle portable drilling rig
09/07/2011CN201963191U 一种防掉螺杆钻具 An anti-off screw drill
09/06/2011US8011455 Down hole hammer having elevated exhaust
09/06/2011US8011425 Transmitting sensor response data and power through a mud motor
09/02/2011CA2733367A1 Downhole positive displacement motor
09/01/2011US20110209919 Pressurized fluid flow system for a normal circulation hammer and hammer thereof
08/2011
08/31/2011CN102168523A Main driving and speed-changing system of drilling machine as well as operating mechanism of the drilling machine
08/30/2011US8006784 Backhead and drill assembly with backhead
08/30/2011US8006776 Sliding pressure control valve for pneumatic hammer drill
08/30/2011CA2496098C Down hole motor with locking clutch
08/25/2011US20110203820 Track guiding system
08/25/2011US20110203789 Pressure equalising devices
08/24/2011EP2360497A2 Drill String Telemetry System and Method
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