| 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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| 04/08/2010 | CA2735772A1 Method and arrangement in rock drilling rig |
| 04/06/2010 | CA2680719A1 Multidimensional data repository for modeling oilfield operations |
| 04/01/2010 | US20100078215 Designing drilling pattern for excavating rock cavern |
| 03/31/2010 | EP2169176A2 Downhole drilling vibration analysis |
| 03/31/2010 | CN201433746Y Constant working fluid level control structure of beam pumping unit |
| 03/31/2010 | CN101688432A Method and apparatus for drilling hole into bedrock |
| 03/30/2010 | US7686099 Downhole positioning system |
| 03/30/2010 | CA2680942A1 Downhole drilling vibration analysis |
| 03/25/2010 | US20100071910 Method and system for using wellbore instruments with a wired pipe string |
| 03/24/2010 | CN101680270A Subsea well control system and method |
| 03/23/2010 | CA2515315C Warning device to prevent clutch burning on a well service rig |
| 03/18/2010 | WO2010030266A1 Remote actuation of downhole well tools |
| 03/18/2010 | US20100065329 Downhole telemetry apparatus and method |
| 03/17/2010 | EP1402145B2 Closed loop drilling assembly with electronics outside a non-rotating sleeve |
| 03/17/2010 | CN101675214A Method and device for controlling at least one drilling parameter for rock drilling |
| 03/17/2010 | CN101675213A Ram bop position sensor |
| 03/17/2010 | CN101675206A Rig engine control |
| 03/17/2010 | CN101672178A Touch-down self-stopping device of drill rod of rotary drilling rig |
| 03/17/2010 | CN100594287C In-situ hydrogen treatment method of to heated hydrocarbon containing fluid |
| 03/17/2010 | CA2678832A1 Improvements in or relating to top drives |
| 03/11/2010 | WO2010027839A2 Drill bit with weight and torque sensors |
| 03/11/2010 | WO2010008661A3 Job monitoring methods and apparatus for logging-while-drilling equipment |
| 03/11/2010 | US20100059278 Method and device for controlling at least one drilling parameter for rock drilling |
| 03/10/2010 | CN201422213Y Electronic control cabinet of oil extraction equipment |
| 03/04/2010 | WO2010025159A1 Monitoring system for well casing |
| 03/04/2010 | WO2009151786A3 Method and apparatus for controlling downhole rotational rate of a drilling tool |
| 03/04/2010 | WO2009002306A8 Method and device for controlling a rock drill rig |
| 03/04/2010 | US20100051267 Gas flow system |
| 03/04/2010 | CA2734672A1 Monitoring system for well casing |
| 03/03/2010 | CN101660404A Angle adjusting method of horizontal directional drilling machine in hard soil and soft rock and application thereof |
| 02/25/2010 | US20100044108 Apparatus and method for detection of position of a component in an earth formation |
| 02/25/2010 | US20100044107 Designing drilling pattern for excavating rock cavern |
| 02/25/2010 | US20100044034 Subsurface tagging system with wired tubulars |
| 02/24/2010 | CN201412137Y Wired and wireless shared torque monitoring system |
| 02/24/2010 | CN201412136Y Anti-rotary drill jamming control system |
| 02/24/2010 | CN201412135Y Servo control system of pumping unit |
| 02/24/2010 | CN101657606A Method and device for controlling at least one drilling parameter for rock drilling |
| 02/24/2010 | CN101655006A Automatic downlink system |
| 02/23/2010 | US7665355 Downhole seal assembly having embedded sensors and method for use of same |
| 02/18/2010 | WO2010019798A2 Bottom hole assembly configuration management |
| 02/18/2010 | WO2009135157A3 Adaptive drilling control system |
| 02/18/2010 | US20100038135 System and method for evaluation of structure-born sound |
| 02/18/2010 | US20100038134 Drilling fluid pump systems and methods |
| 02/18/2010 | US20100038088 Multi-function multi-hole drilling rig |
| 02/17/2010 | EP2153010A1 Constant-mode auto-drill with pressure derivative control |
| 02/17/2010 | EP2153009A1 Method and apparatus for establishing a manual governor control setting in an electro-hydraulic system |
| 02/17/2010 | CN201406985Y Remotely-controlled pneumatic hydraulic reverse-circulation well drilling machine |
| 02/16/2010 | CA2568933C Method and apparatus and program storage device adapted for automatic drill bit selection based on earth properties |
| 02/16/2010 | CA2468886C Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence |
| 02/11/2010 | US20100032210 Monitoring Drilling Performance in a Sub-Based Unit |
| 02/11/2010 | US20100032177 Rock drilling method and rock drilling machine |
| 02/10/2010 | CN101644153A Synchronous control system of injection head and wound roll of continuous oil pipe operating machine and control method thereof |
| 02/09/2010 | CA2463684C Rock drilling apparatus and rock breaking machine |
| 02/04/2010 | WO2010014398A2 Electric wireline insert safety valve |
| 02/04/2010 | WO2009117478A4 Torque-provider |
| 02/04/2010 | US20100025110 System and method for controlling the integrity of a drilling system |
| 02/04/2010 | US20100025109 Apparatus and Method for Generating Formation Textural Feature Images |
| 02/04/2010 | US20100025108 Method for drilling rock |
| 02/04/2010 | US20100025107 Adaptive positive feed drilling system |
| 02/04/2010 | US20100025106 Method and device |
| 02/03/2010 | EP2148975A1 Flow hydraulic amplification for a pulsing, fracturing, and drilling (pfd) device |
| 02/03/2010 | CN201396134Y Passing-through steering high-power signal source system for long-distance large-caliber oil and gas pipelines |
| 02/03/2010 | CN201396133Y Workover rig dragged by industrial electric network-driven frequency-conversion speed-controlling rare-earth permanent magnet synchronous motor |
| 02/02/2010 | US7655096 Coiled tubing wellbore cleanout |
| 02/02/2010 | US7654337 Arrangement for controlling rock drilling |
| 02/02/2010 | CA2499303C A method and apparatus for dynamic checking and reporting system health |
| 01/28/2010 | WO2010010455A2 System and method for automating exploration of production of subterranean resources |
| 01/28/2010 | US20100018770 System and Method for Drilling a Borehole |
| 01/28/2010 | US20100018701 Apparatus and method for detecting poor hole cleaning and stuck pipe |
| 01/28/2010 | CA2730594A1 System and method for automating exploration or production of subterranean resources |
| 01/27/2010 | EP2147277A1 Loading of explosives |
| 01/27/2010 | CN201391307Y Cluster well pumping unit central control device |
| 01/27/2010 | CN201391306Y Filter device of hydraulic system of surface blowout preventer control device |
| 01/27/2010 | CN201391305Y Mechanical oil extraction frequency conversion control device conducting intelligent control by using working fluid level signal |
| 01/27/2010 | CN201391304Y Control device of working wheel of small drilling machine |
| 01/27/2010 | CN201391303Y Electric control system of petroleum drilling machine of permanent-magnet DC brushless motor |
| 01/26/2010 | US7650950 Drilling system and method |
| 01/26/2010 | CA2582200C Dynamic vibrational control |
| 01/21/2010 | WO2010008661A2 Job monitoring methods and apparatus for logging-while-drilling equipment |
| 01/21/2010 | US20100012376 Monolithic movable rotary well drilling rig |
| 01/20/2010 | CN201386553Y Intelligent intermittent pumping control system of oil pumping machine well |
| 01/20/2010 | CN201386552Y Device for automatically controlling grouting of drilling and workover operation |
| 01/19/2010 | CA2438885C Liquid lift method for drilling risers |
| 01/14/2010 | WO2010004247A1 Work string controller |
| 01/14/2010 | US20100006338 Optimized reaming system based upon weight on tool |
| 01/14/2010 | US20100006337 Apparatus for drilling machine alignment |
| 01/14/2010 | CA2795548A1 Work string controller |
| 01/14/2010 | CA2795175A1 Work string controller |
| 01/14/2010 | CA2794538A1 Work string controller |
| 01/14/2010 | CA2728172A1 Work string controller |
| 01/13/2010 | EP2142760A1 High pressure fracture tester |
| 01/13/2010 | CN201381846Y Screw pump well dynamic liquid level monitoring device |
| 01/12/2010 | US7644782 Method for correcting positioning errors in rock drilling, and rock drilling equipment |
| 01/12/2010 | CA2287695C Intrinsically safe data aquisition system and apparatus |
| 01/07/2010 | WO2010003080A2 Method for estimating the probability of collision between wells |
| 01/07/2010 | US20100000311 Transducer assemblies for downhole tools |
| 01/06/2010 | EP2140107A1 Method and device for controlling at least one drilling parameter for rock drilling |
| 01/06/2010 | EP2140106A1 Method and device for controlling at least one drilling parameter for rock drilling |
| 01/06/2010 | EP2140105A1 Method and device for controlling at least one drilling parameter for rock drilling. |
| 01/06/2010 | CN201377321Y Temperature-setting control system of steam channeling well |