| 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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| 11/16/2011 | CN202039833U Remote control and remote monitoring power house for under-balanced drilling well rotation controlling device |
| 11/16/2011 | CN202039832U Oil seal of under balance pressure drilling rotating control device |
| 11/16/2011 | CN202039773U Wide range lifting type deep hole drilling rig for mining |
| 11/16/2011 | CN1664308B Wellbore drilling system and method |
| 11/16/2011 | CN102242606A Hydraulic pressurizer |
| 11/15/2011 | US8056648 Method and device |
| 11/15/2011 | CA2516189C Downhole measurements during non-drilling operations |
| 11/10/2011 | WO2011139497A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias |
| 11/10/2011 | WO2011138511A1 Method and apparatus for opening threaded joints of drilling equipment |
| 11/10/2011 | WO2011138510A1 Method and apparatus for detecting tightness of threaded joints of drill rods |
| 11/10/2011 | WO2011091368A3 System and method for performing an adaptive drilling operation |
| 11/10/2011 | US20110272145 Mechanical actuator with electronic adjustment |
| 11/10/2011 | CA2798369A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias |
| 11/09/2011 | EP2384389A2 A method and system for monitoring a drilling operation |
| 11/09/2011 | DE202010017291U1 Vorrichtung zur Messung unterirdischer Bauwerke, insbesondere beim unterirdischen Vortrieb, mit mindestens teilweiser mannloser Steuerung Device for measuring underground structures, particularly in underground excavation, with at least partial control of unmanned |
| 11/09/2011 | CN102235166A Method for adjusting coaxality and orthogonality of acceleration sensor and magnetic sensor |
| 11/09/2011 | CN102234999A Underwater drilling platform |
| 11/08/2011 | US8051909 Method and apparatus for positioning the proximal end of a tubular string above a spider |
| 11/02/2011 | CN202023549U Remote real-time monitoring system for well drilling construction |
| 11/02/2011 | CN202023501U Up and down limiting device for movable arms of rotary drilling rig |
| 11/02/2011 | CN102230357A Method for forming ultra-deep anchor hole in loose accumulation body and breakage rock layer |
| 11/01/2011 | CA2634650C Permanent downhole deployment of optical sensors |
| 10/28/2011 | CA2701531A1 Reverse torque drive system |
| 10/27/2011 | WO2011133567A1 Air compressor system and method of operation |
| 10/27/2011 | CA2795793A1 Air compressor system and method of operation |
| 10/26/2011 | EP1836509B1 Method for predicting rate of penetration using bit-specific coefficients of sliding friction and mechanical efficiency as a function of confined compressive strength |
| 10/26/2011 | CN202017480U Pipe tripping comprehensive monitor operating system |
| 10/19/2011 | EP2378053A1 Construction machine with computer unit for determining an adjustment range |
| 10/19/2011 | EP2153009B1 Method and apparatus for establishing a manual governor control setting in an electro-hydraulic system |
| 10/19/2011 | CN202012343U Gear wheel drilling machine throwing hole orientator |
| 10/19/2011 | CN202012342U Branch control device for motor of electrohydraulic workover rig |
| 10/19/2011 | CN102220864A Hydraulic control system for rotation system of horizontal directional drilling machine |
| 10/19/2011 | CN102220863A Valve-controlled automatic confluence hydraulic system for horizontal directional drilling machine |
| 10/19/2011 | CN102220862A Safety device for a construction machine |
| 10/19/2011 | CN102220842A Radial high-pressure water jetting composite well with ultrashort radius as well as well completion tool and technology |
| 10/19/2011 | CN102220839A Construction machine having computer unit for determining adjusting range |
| 10/18/2011 | CA2654783C Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 10/18/2011 | CA2620649C Automatic downlink system |
| 10/18/2011 | CA2457078C Method and apparatus for controlling wellbore equipment |
| 10/13/2011 | WO2011127433A2 System and method for subsea production system control |
| 10/12/2011 | EP2373871A1 Drillstring dynamics |
| 10/11/2011 | US8033345 Apparatus and method for a drilling assembly |
| 10/11/2011 | CA2536684C Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 10/11/2011 | CA2479361C Method of modelling the production of hydrocarbons by a subsurface deposit which are subject to depletion |
| 10/06/2011 | WO2011120086A1 A system for classification of materials using laser induced breakdown spectroscopy |
| 10/06/2011 | US20110245980 Methods and apparatus for reducing stick-slip |
| 10/06/2011 | CA2792934A1 A system for classification of materials using laser induced breakdown spectroscopy |
| 10/05/2011 | EP1340069B1 Spectral power ratio method and system for detecting drill bit failure and signaling surface operator |
| 10/05/2011 | EP1299749B1 Method and system for coordinate transformation to model radial flow near a singularity |
| 10/05/2011 | CN202000993U Novel main hoist floating system for rotary drilling rig |
| 10/05/2011 | CN202000992U Rotation control system for upper part of rotary drill rig |
| 10/05/2011 | CN202000991U Device for acquiring data of down-the-hole drill in drilling process in real time |
| 10/05/2011 | CN201999644U Anti-collision device for crown block with distance and speed measured by laser |
| 10/04/2011 | US8028764 Methods and apparatuses for estimating drill bit condition |
| 10/04/2011 | CA2542964C Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 09/29/2011 | US20110232966 Method and apparatus for reducing stick-slip |
| 09/28/2011 | EP2368009A2 Method for determining formation integrity and optimum drilling parameters during drilling |
| 09/28/2011 | CN201993880U 一种石油钻机液压盘式刹车监控报警器 A petroleum rig hydraulic disc brake monitor alarm |
| 09/28/2011 | CN102199991A Drilling-fixing integrated device and method for yolk coal terrane |
| 09/22/2011 | WO2011085286A3 Downhole downlinking system employing a differential pressure transducer |
| 09/22/2011 | US20110231149 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 09/22/2011 | US20110226530 Methods and systems for tripping pipe |
| 09/21/2011 | CN201982078U 钻机钻孔精确角度自动定位系统 Drilling rig precise angles automatic positioning system |
| 09/21/2011 | CN201982017U 用于切削钻机的防卡钻杆装置 Anti-card devices for cutting drill rig |
| 09/21/2011 | CN102191923A Long-distance control wellhead operation device for workover operation |
| 09/20/2011 | CA2598801C Method for optimizing the location of a secondary cutting structure component in a drill string |
| 09/20/2011 | CA2557189C Method and apparatus and program storage device adapted for automatic drill string design based on wellbore geometry and trajectory requirements |
| 09/15/2011 | US20110220410 System and method for online automation |
| 09/14/2011 | EP2364398A1 Method and apparatus for estimating the instantaneous rotational speed of a bottom hole assembly |
| 09/14/2011 | EP2364397A1 Method and apparatus for reducing stick-slip |
| 09/14/2011 | CN201972685U 欠平衡钻井旋转控制装置的单液缸壳体 UBD rotation control device single liquid cylinder housing |
| 09/14/2011 | CN101230779B Electric control gear for safely using rotary drilling machine |
| 09/13/2011 | US8016050 Methods and apparatuses for estimating drill bit cutting effectiveness |
| 09/13/2011 | US8015868 Formation evaluation using estimated borehole tool position |
| 09/08/2011 | US20110214856 Method and system for controlling a well service rig based on load data |
| 09/07/2011 | CN201963288U 闸板防喷器/钻机刹车联动防提、防挂安全装置 Ram BOP / rig brake linkage anti mention, anti-hanging safety device |
| 09/01/2011 | WO2011104504A2 System and method for optimizing drilling speed |
| 09/01/2011 | WO2011104441A1 Rock drilling rig, method for rock drilling, and control system of rock drilling rig |
| 09/01/2011 | WO2011104440A1 Method of presenting positioning information, user interface, and rock drilling rig |
| 09/01/2011 | WO2011103730A1 Rock drill and control system and control method therefor |
| 09/01/2011 | CA2789957A1 Rock drilling rig, method for rock drilling, and control system of rock drilling rig |
| 09/01/2011 | CA2789219A1 System and method for optimizing drilling speed |
| 09/01/2011 | CA2784074A1 Method of presenting positioning information, user interface, and rock drilling rig |
| 08/31/2011 | CN102171411A A method and an arrangement for controlling a rock drill |
| 08/31/2011 | CN102168547A Fault diagnosis system of deepwater blowout preventer unit based on wavelet neural network |
| 08/31/2011 | CN101210488B Tamping-proof monitoring device for drilling platform turntable surface of drilling machine used for petroleum exploration |
| 08/31/2011 | CN101208494B Driller for rock and method for positioning drilling unit |
| 08/25/2011 | WO2011081723A3 Pressure and flow control in drilling operations |
| 08/25/2011 | WO2009090489A3 Wellbore drilling system |
| 08/24/2011 | EP2358972A1 Method and apparatus for programmable robotic rotary mill cutting of multiple nested tubulars |
| 08/24/2011 | CN102164714A Method and arrangement in rock drilling rig |
| 08/17/2011 | EP1226336B1 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/17/2011 | CN201934088U 石油钻采设备用智能匹配型动力控制系统 Oil drilling equipment with intelligent matching type power control system |
| 08/17/2011 | CN201934087U 旋挖钻机的驱动控制装置及旋挖钻机 Rotary drilling rig drive control device and rotary drilling rig |
| 08/17/2011 | CN201934018U 无人驾驶钻车 Unmanned Drill |
| 08/17/2011 | CN102155212A Throwing hole orientator of bit hole rig and positioning method |
| 08/17/2011 | CN102155210A Interlocking control system for falling, floating and depth sounding of main winch of rotary drilling rig |
| 08/17/2011 | CN102155163A Deepwater multifunctional water pump drilling system and installation method thereof |
| 08/16/2011 | US7997357 System and method for damping vibration in a drill string |
| 08/11/2011 | DE10123999B4 Vorrichtung und Verfahren zum Ermitteln von Bohrparametern Apparatus and method for determining drilling parameters |