| Patents for E21B 44 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions (5,356) |
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| 03/01/2012 | CA2809264A1 Magnetic latching device for downhole wellbore intercept operations |
| 03/01/2012 | CA2809257A1 Remotely-controlled downhole device and method for using same |
| 02/28/2012 | US8122974 Apparatus for drilling machine alignment |
| 02/23/2012 | WO2012023961A1 Apparatus and method for mining coal |
| 02/23/2012 | WO2011140625A8 An apparatus and a control method for controlling the apparatus |
| 02/23/2012 | US20120046869 System and method for bent motor cutting structure analysis |
| 02/23/2012 | US20120043801 Method and apparatus for creating a planar cavern |
| 02/23/2012 | CA2807724A1 Apparatus and method for mining coal |
| 02/22/2012 | EP2126268B1 Rig engine control |
| 02/22/2012 | CN202148896U 石油钻机的plc控制系统 Oil rig plc control system |
| 02/22/2012 | CN102362046A Hydraulic control system for drilling systems |
| 02/22/2012 | CN102359367A System and method for monitoring rotary drilling machine |
| 02/22/2012 | CN102359366A Rod carrying monitoring system for drill rod of rotary drilling machine |
| 02/22/2012 | CN102359347A Machine-locked drilling machine, drilling rod monitoring method, controller and monitoring system thereof |
| 02/15/2012 | CN202144723U 挖掘机型钻机 Excavators rig |
| 02/15/2012 | CN102352725A Drilling jet type coal seam cutting system |
| 02/08/2012 | CN202143174U 无线视频远传装置 Wireless video remote device |
| 02/08/2012 | CN202140079U 一种高温高压井下仪器远程调压调速装置 A high-temperature high-pressure downhole instrument remote voltage control device |
| 02/08/2012 | CN101705784B 孔底电动冲击器控制系统 Bottom of the hole electric shock control system |
| 02/08/2012 | CN101160449B 用于控制挖掘装置的方法和系统 Method and system for controlling excavation apparatus |
| 02/07/2012 | CA2573375C Closed loop control bore hole drilling system |
| 02/02/2012 | WO2012012830A1 Drilling activity logging device, system and method |
| 02/02/2012 | WO2011156798A3 Detecting and mitigating borehole diameter enlargement |
| 02/02/2012 | US20120024181 Loading of Explosives |
| 02/02/2012 | CA2766763A1 Drilling activity logging device, system and method |
| 02/01/2012 | EP2411626A2 Hydraulic control system for drilling systems |
| 01/26/2012 | WO2012009788A1 Method and apparatus for directional drilling |
| 01/26/2012 | US20120018219 Method and steering assembly for drilling a borehole in an earth formation |
| 01/26/2012 | US20120018218 Method and apparatus for directional drilling |
| 01/26/2012 | CA2803652A1 Method and apparatus for directional drilling |
| 01/25/2012 | CN202125363U PLC (Programmable Logical Control) system for engine of drilling machine |
| 01/25/2012 | CN202125291U Device for limiting and protecting remaining three rounds of single-layer steel wire rope of rotary drilling rig |
| 01/25/2012 | CN202125247U Fully-electric composite continuous pipe drilling device |
| 01/25/2012 | CN1619098B Downhole tool sensor system and method |
| 01/24/2012 | CA2544832C System and method for damping vibration in a drill string |
| 01/18/2012 | CN202117662U Wireless explosion-proof sleeve detecting device |
| 01/18/2012 | CN202117652U Electric control system of gear rack drilling machine |
| 01/18/2012 | CN202117651U Mechanical drilling machine multi-electricity control system |
| 01/18/2012 | CN202117561U Annular raise boring machine |
| 01/18/2012 | CN102325963A Drilling scorecard |
| 01/18/2012 | CN102322253A Engineering machine and working condition control method and working condition control system thereof |
| 01/18/2012 | CN102322221A Pneumatic drill for hard rocks |
| 01/18/2012 | CN102322219A Submarine jet drilling vehicle |
| 01/18/2012 | CN102134965B Long positioned drill hole drilling tool for extracting gas from coal seam roof and construction method thereof |
| 01/18/2012 | CN101180450B Method and mechanism of control impact resistance device for rock drill |
| 01/17/2012 | US8099266 Method and system for the design of an oil well |
| 01/14/2012 | CA2741287A1 Irregularly shaped flapper closure and sealing surfaces |
| 01/12/2012 | WO2011096786A4 Oil-drilling simulation device |
| 01/11/2012 | EP2404031A1 Drilling control method and system |
| 01/10/2012 | US8091652 Method and device for controlling at least one drilling parameter for rock drilling |
| 01/05/2012 | WO2012003329A2 Systems and methods for compressing data and controlling data compression in borehole communication |
| 01/05/2012 | WO2011127433A3 System and method for subsea production system control |
| 01/04/2012 | CN202100248U Underground harmonic gear transmission device suitable for well drilling |
| 01/04/2012 | CN102305059A Automatic control system and method of petroleum drilling machine |
| 01/03/2012 | CA2673849C Drilling components and systems to dynamically control drilling dysfunctions and methods of drilling a well with same |
| 01/03/2012 | CA2531531C Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 01/03/2012 | CA2474998C Well system |
| 12/29/2011 | WO2011095600A3 Method of conducting well operations |
| 12/28/2011 | EP2399001A2 Drilling scorecard |
| 12/28/2011 | CN202090905U 水平定向钻机旋转系统液压控制系统 Horizontal directional drilling rotating system hydraulic control system |
| 12/28/2011 | CN202090904U 水平定向钻机阀控自动合流液压系统 Horizontal directional drilling valve controlled hydraulic system to automatically merge |
| 12/28/2011 | CN202090903U 液压同步起升控制装置 Synchronous lifting hydraulic control device |
| 12/22/2011 | US20110308858 Flex joint for downhole drilling applications |
| 12/21/2011 | CN202084804U 抽油机无线监控智能控制箱 Pumping wireless monitoring intelligent control box |
| 12/15/2011 | WO2011156798A2 Detecting and mitigating borehole diameter enlargement |
| 12/15/2011 | US20110303461 Clutch for a Jack Element |
| 12/15/2011 | CA2802320A1 Detecting and mitigating borehole diameter enlargement |
| 12/14/2011 | CN202073549U 冲孔机自动控制系统 Punching machine automatic control system |
| 12/14/2011 | CN1214755B 调节钻井参数的方法 Adjust drilling parameters method |
| 12/14/2011 | CN102278065A 旋转导向工具及其偏置机构以及对该偏置机构的控制方法 Rotation control method-oriented tools and a biasing mechanism and the biasing mechanism |
| 12/14/2011 | CN102278064A 气动钻车 Pneumatic Drill |
| 12/08/2011 | US20110297395 Remote drilling and completions management |
| 12/07/2011 | EP2392767A1 Work string controller |
| 12/07/2011 | EP2391795A1 A method for handling a component in the construction, maintenance and repair of wells |
| 12/07/2011 | CN202065073U 泥浆泵远程气路控制装置 Mud pump pneumatic remote control device |
| 12/07/2011 | CN202064902U 一种抽油机远程监控系统 One kind of pumping remote monitoring system |
| 12/07/2011 | CN202064832U 超短半径径向高压水射流复式钻井、完井工具 Ultrashort radius radial pressure water jet double drilling, completion tools |
| 12/07/2011 | CN1804369B 石油钻井防顶垮天车防卡钻的双自动控制装置 Top anti-oil drilling automatic control device crane collapse double anti-sticking |
| 12/06/2011 | US8069716 Multi-coupling reduced length measure while drilling apparatus |
| 12/06/2011 | CA2511203C System and method for rig state detection |
| 12/01/2011 | WO2011149478A1 Rig fuel management systems and methods |
| 12/01/2011 | US20110291334 System And Method For Damping Vibration In A Drill String |
| 12/01/2011 | US20110290559 Surface real-time processing of downhole data |
| 12/01/2011 | CA2800899A1 Rig fuel management systems and methods |
| 11/30/2011 | EP1299752B1 Feature modeling in a finite element model |
| 11/30/2011 | CN102261240A 精确监控牙轮钻机钻孔深度的装置及其监控方法 Accurate monitoring of rotary drill drilling depth monitoring device and method |
| 11/29/2011 | US8066085 Stochastic bit noise control |
| 11/24/2011 | WO2011096786A3 Oil-drilling simulation device |
| 11/24/2011 | US20110284288 Apparatus and process for wellbore characterization |
| 11/24/2011 | DE102011010675A1 Bohranlage, insbesondere Horizontalbohranlage Drilling rig, especially horizontal drilling rig |
| 11/23/2011 | CN202047754U Hard rock pneumatic drilling machine |
| 11/23/2011 | CN102251767A Full trajectory control system of masts of rotary drilling rig and control method thereof |
| 11/23/2011 | CN102251744A Annular patio drilling machine |
| 11/22/2011 | US8061445 Drilling fluid pump systems and methods |
| 11/22/2011 | US8061440 Combining belief networks to generate expected outcome |
| 11/17/2011 | WO2011140625A1 An apparatus and a control method for controlling the apparatus |
| 11/17/2011 | US20110278065 Automatic Control System For Connecting A Dual-Member Pipe |
| 11/17/2011 | US20110278064 Electronically activated underreamer and calliper tool |
| 11/17/2011 | CA2794214A1 An apparatus and a control method for controlling the apparatus |
| 11/16/2011 | CN202039834U Device for detecting operation handle state of drilling machine hydraulic valve |