| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 05/08/2012 | US8172006 Pulsed electric rock drilling apparatus with non-rotating bit |
| 05/08/2012 | CA2679649C System and method for reservoir characterization using underbalanced drilling data |
| 05/03/2012 | WO2012056011A1 Method for the underground placement of a pipeline |
| 05/03/2012 | WO2012021327A4 Vibratory drilling apparatus |
| 05/03/2012 | US20120103693 System and method for drilling a borehole |
| 05/03/2012 | US20120103692 Method and system for drilling using gas as a drilling fluid |
| 05/03/2012 | US20120103691 Methods of coupling components of downhole tools, downhole tools and components of downhole tools |
| 05/03/2012 | US20120103690 Drill Bit with Electrical Power Generation Devices |
| 05/03/2012 | US20120103689 Apparatus and method for determining axial forces on a drill string during underground drilling |
| 05/03/2012 | US20120103624 Large-offset direct vertical access system |
| 05/03/2012 | CA2815739A1 Method for the underground installation of a pipe |
| 05/02/2012 | EP2447462A1 Method for subterranean insertion of a conduit |
| 05/02/2012 | CN202209150U Device used for short-distance movement of drilling machine along track |
| 05/02/2012 | CN202209145U Four-rod swing side-sway mechanism of drill carriage |
| 05/02/2012 | CN102434508A Hydraulic control system used in underground steering drilling tool |
| 05/02/2012 | CN102434103A Two-in-one dual-effect rotatable sleeve hole expanding device |
| 05/02/2012 | CN102434102A Pulse cavitation multiple jet nozzle |
| 05/02/2012 | CN102434101A Hydraulic spring roller stabilizer |
| 05/02/2012 | CN102434100A Rotary drilling rig and automatically deviation-rectifying system thereof |
| 05/02/2012 | CN102434099A Multilateral well whipstock and integrated hollow packer whipstock device |
| 05/02/2012 | CN102434098A Hydraulic five-arm anchor drill for coal mine |
| 05/02/2012 | CN102434097A Rapid piling process |
| 05/02/2012 | CN101629471B Pot hole drilling and digging machine carried on wheel type tractor |
| 05/01/2012 | US8167060 Apparatus and method for conveyance and control of a high pressure hose in jet drilling operations |
| 05/01/2012 | US8167059 Casing and liner drilling shoes having spiral blade configurations, and related methods |
| 05/01/2012 | US8167058 Method and assembly for abrasive jet drilling |
| 05/01/2012 | CA2708591C Methods and apparatus for wellbore construction and completion |
| 05/01/2012 | CA2650581C Method and device for trenchless pipe laying |
| 05/01/2012 | CA2532618C Bi-directional rotary steerable system actuator assembly and method |
| 05/01/2012 | CA2532167C System and method for drilling using a modulated jet stream |
| 04/26/2012 | WO2012054440A2 Offshore tower for drilling and/or production |
| 04/26/2012 | WO2012052597A1 Method in earth drill bit arrangement assembly and a bit arrangement |
| 04/26/2012 | WO2012030926A3 Drill bit with adjustable side force |
| 04/26/2012 | WO2012024474A3 System and method for estimating directional characteristics based on bending moment measurements |
| 04/26/2012 | WO2012021302A3 Drilling system for enhanced coring and method |
| 04/26/2012 | WO2012018620A3 Method and apparatus for transforming a pressure drop into a continuous fluid flow |
| 04/26/2012 | US20120097454 Apparatus and Method of Handling Rod-Shaped Components |
| 04/26/2012 | US20120097453 Downhole Mechanism |
| 04/26/2012 | US20120097451 Electrical controller for anti-stall tools for downhole drilling assemblies |
| 04/26/2012 | US20120097448 Percussion Mole |
| 04/25/2012 | EP2444587A1 Drive device |
| 04/25/2012 | CN202202817U 一种旋挖钻机 One kind of rotary drilling rig |
| 04/25/2012 | CN202202812U 一种钻车单支承摆缸侧摆机构 One kind Drill single cylinder side pendulum swing support mechanism |
| 04/25/2012 | CN202202811U 一种钻车连杆三铰点侧摆机构 One kind of drill rod three car side hinge point swing mechanism |
| 04/25/2012 | CN202202810U 一种钻车连杆三铰点侧摆回转机构 One kind Drill rod three-point side pendulum swing hinge mechanism |
| 04/25/2012 | CN202202809U 一种钻车摇杆三铰点侧摆回转机构 One kind of drills three nodes side rocker pendulum swing mechanism |
| 04/25/2012 | CN202202808U 履带式三臂多功能凿岩台车 Crawler three-arm multi-purpose drill rig |
| 04/25/2012 | CN202202807U 一种机载式大扭矩液压钻机装置 Airborne style high torque hydraulic drilling apparatus |
| 04/25/2012 | CN202202806U 墙体开孔机 Wall tapping machine |
| 04/25/2012 | CN202202321U 分体式车载轻型打桩机 Light-vehicle pile-split |
| 04/25/2012 | CN202202320U 一种三轮车车载螺旋打桩机 One kind of tricycle-vehicle pile-helix |
| 04/25/2012 | CN202200781U 一种一体化钻机专用汽车底盘 An integrated rig the Special Purpose Vehicle Chassis |
| 04/25/2012 | CN102428247A 旋转式爆破孔钻机的活动钳口钻杆定位装置 Activities jaw drill pipe positioning device rotary formula blasting hole drilling rig of |
| 04/25/2012 | CN102425409A 一种井斜和工具面测量装置及垂直钻井设备 A well oblique and tools for surface measurement devices and vertical drilling equipment |
| 04/25/2012 | CN102425397A 双井筒水平羽状井水力冲刷钻进卸压开采煤层气方法 Double pinnate horizontal wellbore drilling relief wells force scour bed methane extraction method |
| 04/25/2012 | CN102425394A 一种低压油藏侧钻井固井完井工艺 A low-pressure reservoir sidetrack well cementing and completion technology |
| 04/25/2012 | CN102425382A 动压润滑钻具及具有该钻具的钻具组合 Hydrodynamic lubrication drilling BHA and have the drill |
| 04/25/2012 | CN102425375A 一种造斜装置 One kind of device whipstocking |
| 04/25/2012 | CN102425374A 一种井眼轨道控制方法 A well trajectory control method |
| 04/25/2012 | CN102425373A 超深孔定向钻机 Ultra-deep hole directional drilling |
| 04/25/2012 | CN102425372A 振动钻进式冲挖钻机 Vibration punching and drilling rig drilling |
| 04/25/2012 | CN102425371A Compound cave making method of open hole of coalbed gas well |
| 04/25/2012 | CN102425158A 一种打桩车 One kind of piling car |
| 04/25/2012 | CN101144278B 综合多功能钻孔灌注桩机 Bored integrated multifunction machine |
| 04/24/2012 | US8162081 Force balanced asymmetric drilling reamer and methods for force balancing |
| 04/24/2012 | US8162079 Impact excavation system and method with injection system |
| 04/24/2012 | US8162078 Vibrating downhole tool |
| 04/24/2012 | US8162064 Autonomous junk collecting sleeve for a riser |
| 04/24/2012 | US8162063 Dual gradient drilling ship |
| 04/24/2012 | US8162061 Subsea inflatable bridge plug inflation system |
| 04/24/2012 | CA2735817C External water delivery system for rock drills |
| 04/19/2012 | WO2012051338A1 Systems and methods for installing geothermal energy transfer loops |
| 04/19/2012 | WO2012050459A1 Guide post |
| 04/19/2012 | WO2012049353A1 Drill assembly |
| 04/19/2012 | US20120090897 Stochastic Bit Noise |
| 04/19/2012 | US20120090896 Auger for digging holes |
| 04/19/2012 | US20120090895 Method of reinforcing a structure and apparatus therefor |
| 04/19/2012 | US20120090894 Locking device for a drilling device |
| 04/19/2012 | US20120090893 Apparatus for and method of drilling a subterranean borehole |
| 04/18/2012 | EP2242893B1 Steerable system |
| 04/18/2012 | EP2242892B1 Directional drilling system |
| 04/18/2012 | EP2235321B1 Stimulation through fracturing while drilling |
| 04/18/2012 | EP2142747B1 Method and assembly for abrasive jet drilling |
| 04/18/2012 | EP1853789B1 A method of geothermal loop installation |
| 04/18/2012 | CN202194578U 旋挖钻机专用底盘 Special chassis for rotary drilling rig |
| 04/18/2012 | CN202194571U 一种破碎硬岩钻头 One kind of crushing hard rock drill |
| 04/18/2012 | CN202194570U Separating directional adapter assembly for oil exploration |
| 04/18/2012 | CN202194569U 一种用于钻井的泥浆动力双向控制液压系统 Drilling mud for two-way power control hydraulic system |
| 04/18/2012 | CN202194568U 一种钻机油改电设备的变频驱动装置 A variable frequency drive electric drill oil change equipment |
| 04/18/2012 | CN202194552U Heavy machine |
| 04/18/2012 | CN102418540A 煤矿用液压八臂锚杆钻车 Mine eight-arm bolt hydraulic drill rig |
| 04/18/2012 | CN102418481A 一种等径自动定心式快速隔水管连接器 One kind of equal diameter self-centering type fast riser connector |
| 04/18/2012 | CN102418479A 一种钻柱轴向振荡工具 One kind of drill string axial oscillation Tools |
| 04/18/2012 | CN102418478A Hollow whipstock for windowing and side drilling of branched well |
| 04/18/2012 | CN102418477A 矿井瓦斯抽放钻杆直线钻进器及其操作方法 Mine gas drainage drilling drill straight line and its method of operation |
| 04/18/2012 | CN102418476A 深层煤炭和煤层气联合开采技术 Deep coal mining technology and coal seam gas joint |
| 04/18/2012 | CN102418475A 一种具有换钎装置的伸缩臂露天凿岩钻车 Soldering apparatus having a change telescopic outdoor Rock Drill |
| 04/18/2012 | CN102182400B 一种煤矿用双导轨钻车 One kind of diamond mines in double rail car |
| 04/18/2012 | CN101864933B Method for reducing pressure in a perforating gun |
| 04/17/2012 | US8157025 Adjustable angle drive connection for a downhole drilling motor |