| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/01/2012 | CN102619466A Rotary eccentric casing pipe internally drilling device |
| 08/01/2012 | CN101812966B Engineering driller |
| 08/01/2012 | CN101737012B Drilling bit for guiding horizontal roatatably-jetting construction and construction method thereof |
| 07/31/2012 | US8230948 Self-contained system for drilling a drainhole |
| 07/31/2012 | US8230920 Extended reach whipstock and methods of use |
| 07/26/2012 | WO2012067454A3 Borehole-diameter-expanding drill having the function of maintaining the shape of the reamed area in the ground, and a pile and tension member construction method for building work using the same |
| 07/26/2012 | US20120186880 Invert Emulsion Fluids With High Internal Phase Concentration |
| 07/26/2012 | US20120186879 Drill Bit Having Enhanced Stabilization Features and Method of Use Thereof |
| 07/26/2012 | US20120186878 Downhole tool |
| 07/26/2012 | US20120186877 Modified Cellulosic Polymer for Improved Well Bore Fluids |
| 07/26/2012 | US20120186876 Core drill bit |
| 07/26/2012 | US20120186875 Hydraulic Drilling Method with Penetration Control |
| 07/26/2012 | US20120186873 Well drilling method utilizing real time response to ahead of bit measurements |
| 07/26/2012 | DE102011122355A1 System und Verfahren unter Verwendung eines Drehschieberventils zum Steuern der Lenkung in einem lenkbaren Rotary-System System and method using a rotary slide valve for controlling the steering in a steerable rotary system |
| 07/26/2012 | DE102011122354A1 System und Verfahren zum Steuern der Lenkung in einem lenkbaren Rotary-System System and method for controlling steering in a steerable rotary system |
| 07/26/2012 | DE102011122350A1 System und Verfahrenzum Steuern der Lenkung und zusätzlicher Funktionalität in einem lenkbaren Rotary-System DOWN PROCEDURE system and controlling the steering and additional functionality in a steerable rotary system |
| 07/26/2012 | DE102011000320A1 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 |
| 07/25/2012 | EP2478157A1 Method, apparatus and system for attaching an anchor member to a floor of a body of water |
| 07/25/2012 | EP1070191B1 Method and system for optimizing penetration rate |
| 07/25/2012 | CN202348261U Erosion detecting device for gas drilling sand-discharging pipeline |
| 07/25/2012 | CN202348153U Reducing drilling stabilizer |
| 07/25/2012 | CN202348122U Soil cleaning device and drilling machine thereof |
| 07/25/2012 | CN202348116U Small-module assembly type offshore platform drilling rig |
| 07/25/2012 | CN202348115U Supercritical carbon dioxide radial drilling system of horizontal well |
| 07/25/2012 | CN202348114U Vertical shaft direct-discharging de-dusting noise-reducing integrated umbrella-shaped drilling machine |
| 07/25/2012 | CN202347522U Walking-type piling machinery travelling mechanism |
| 07/25/2012 | CN102606321A Controller, system and method for adjusting gear of rotary drilling rig, and rotary drilling rig |
| 07/25/2012 | CN102606190A Method and device for using downward crossing hole to eliminate outburst in mining of coal mine |
| 07/25/2012 | CN102606074A Novel submarine deep hole pressure maintaining and core drilling rig |
| 07/25/2012 | CN102606073A Guide mechanism for directing rotary steering drilling tool |
| 07/25/2012 | CN102606072A 90-degree rotational deep-hole drill rig for coal mines |
| 07/25/2012 | CN102606071A Multifunctional road pile drilling machine |
| 07/25/2012 | CN102606070A Combined drilling technique of vegetable gum diamond coring and downhole hammer casing drilling |
| 07/25/2012 | CN102606069A Control device for phases in wellbore of supercritical carbon dioxide drilled well |
| 07/25/2012 | CN101864899B Self-control shooting distance water jet drill |
| 07/24/2012 | US8227382 Breaker fluids and methods of using the same |
| 07/24/2012 | US8225888 Casing shoes having drillable and non-drillable cutting elements in different regions and related methods |
| 07/24/2012 | US8225887 Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods |
| 07/24/2012 | US8225882 Apparatus for boring holes in rock mass |
| 07/19/2012 | WO2012096648A1 Controlled hydrostatic pressure completion system |
| 07/19/2012 | WO2012095625A1 Boring ram |
| 07/19/2012 | WO2012064737A3 Tools for use in subterranean boreholes having expandable members and related methods |
| 07/19/2012 | US20120181089 Method and Means for Drilling an Earthen Hole |
| 07/19/2012 | US20120181084 System and Methods for Continuous and Near Continuous Drilling |
| 07/19/2012 | US20120181044 Flow control diverter valve |
| 07/19/2012 | CA2843868A1 Controlled hydrostatic pressure completion system |
| 07/19/2012 | CA2822883A1 Controlled hydrostatic pressure completion system |
| 07/18/2012 | EP2475839A1 Rock drilling unit, feed beam, and method for damping vibration |
| 07/18/2012 | CN202338203U Open-hole cave-making tool |
| 07/18/2012 | CN202338202U 用于非开挖水平定向钻机的动力头 Trenchless horizontal directional drilling for power head |
| 07/18/2012 | CN202338201U 振动挤压式钻孔机 Vibration extrusion Drills |
| 07/18/2012 | CN102597411A Method for attaching protective structure to feed beam, and protective structure in rock drilling rig |
| 07/18/2012 | CN102587841A Flushing drill bit |
| 07/18/2012 | CN102587833A Flexible tunneling machine for installing sleeve |
| 07/18/2012 | CN102587832A Pressure resistant tool for reducing frictional resistance of horizontal well section |
| 07/18/2012 | CN102587831A Mine cutting drill with extended drilling arms and convenient in transportation |
| 07/18/2012 | CN102587830A Side slope anchoring hole drilling construction equipment and side slope anchoring hole drilling construction method |
| 07/18/2012 | CN102587829A Drilling tool and piling machine |
| 07/18/2012 | CN102587828A Gas extraction and drilling cooperative drilling and protecting integrated system for soft coal seams and process |
| 07/17/2012 | US8220564 Devices and methods for dynamic boring procedure reconfiguration |
| 07/17/2012 | CA2630576C Method for varying the density of drilling fluids in deep water oil and gas drilling applications |
| 07/17/2012 | CA2548962C Method and apparatus for directional drilling |
| 07/12/2012 | WO2012094164A2 Method and apparatus for multi-drop tool control |
| 07/12/2012 | WO2012092657A1 Well tool with shearable collet |
| 07/12/2012 | WO2012061096A3 Redundant position reference system for multilateral exit construction and method for use of same |
| 07/12/2012 | WO2012033872A3 Offshore thermal treatment of drill cuttings fed from a bulk transfer system |
| 07/12/2012 | US20120175167 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 07/12/2012 | US20120175113 Controlled hydrostatic pressure completion system |
| 07/12/2012 | US20120175106 Drilling Fluid Diverting Sub |
| 07/12/2012 | DE102011000738B3 Expansion tool for expanding through-hole in ground, has elastically deformable element that elastically deforms when exerting pulling force on connection portion such that tensile force is exerted on expansion portion |
| 07/11/2012 | EP2474703A1 Boring ram |
| 07/11/2012 | CN202325573U 煤巷钻孔防突装置 Coal Lane drilling outburst prevention device |
| 07/11/2012 | CN202325462U Electric control operating system of rotary drilling rig and rotary drilling rig provided with same |
| 07/11/2012 | CN202325305U 车载式双动力电驱动修井机 Hybrid electric drive vehicle-mounted workover |
| 07/11/2012 | CN202325265U 一种长螺旋钻机装车支架 A long-auger loading bracket |
| 07/11/2012 | CN202325258U 底盘与桩架间的连接结构及使用该连接结构的钻机 Connection structure and use of the rig that connection structure between the chassis and the pile frame |
| 07/11/2012 | CN202325240U 一种气体钻井稳定井壁工具 A gas drilling borehole stability tools |
| 07/11/2012 | CN202325239U 水力喷射径向钻孔装置 Water jet radial drilling device |
| 07/11/2012 | CN202325238U 一体式开窗侧钻工具 Integrated sidetracking tools |
| 07/11/2012 | CN202325237U 侧钻引鞋 Sidetracking guide shoe |
| 07/11/2012 | CN202325236U 油田作业修井机监控装置 Oilfield workover operations monitoring device |
| 07/11/2012 | CN202325235U 整体并车装置 And the whole car system |
| 07/11/2012 | CN202325234U 多功能全液压钻机 Multifunctional Hydraulic Drill |
| 07/11/2012 | CN202325233U 一种履带式液压锚杆钻车 Tracked hydraulic anchor drill rig |
| 07/11/2012 | CN202325232U 一种快速成孔钻机 A fast into drilling rig |
| 07/11/2012 | CN202325230U 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 |
| 07/11/2012 | CN202325229U 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 |
| 07/11/2012 | CN102575500A Rock drilling unit, feed beam, and method for damping vibration |
| 07/11/2012 | CN102575498A Resonance enhanced rotary drilling |
| 07/11/2012 | CN102575148A Application of degradable fibers in invert emulsion fluids for kill pills |
| 07/11/2012 | CN102562067A Method for controlling rock burst by pulse fracturing |
| 07/11/2012 | CN102562039A Method and device for determining relative positions of coal bed gas horizontal well drill and straight well cave |
| 07/11/2012 | CN102562015A Auger for gas and liquid recovery from regolith |
| 07/11/2012 | CN102562008A Oil-gas exploration and development integrated mode for Bohai Sea |
| 07/11/2012 | CN102561998A Gas extraction bored well and forming method |
| 07/11/2012 | CN102561952A Large-through-hole opening type all-dimensional drilling bit and sieve tube lowering method thereof |
| 07/11/2012 | CN102561949A Attachment type automatic water feeder for hydraulic drill |
| 07/11/2012 | CN102561948A Rock-drilling drill carriage with foldable arm and automatic drill rod replacing device |
| 07/11/2012 | CN102561947A Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
| 07/11/2012 | CN102561946A Drilling rig with following pipe pile and construction method for following pipe pile |