| 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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| 08/01/2012 | EP2480756A2 Method for controlling fluid production from a wellbore by using a script |
| 08/01/2012 | EP2480744A2 Systems and methods for improving drilling efficiency |
| 08/01/2012 | EP1488073B2 Dynamic annular pressure control apparatus and method |
| 08/01/2012 | CN202360081U Rod shifting and blocking monitoring system for drill rod of rotary drilling rig |
| 08/01/2012 | CN202360080U Drilling rod carrying monitoring system of rotary drilling rig |
| 08/01/2012 | CN102619498A Steering drilling system based on top driving and ground control and drilling operation method |
| 07/31/2012 | US8230942 Power tool with improved start actuator |
| 07/28/2012 | CA2815877A1 Magnetic ranging method and apparatus |
| 07/28/2012 | CA2734375A1 Magnetic ranging method and apparatus |
| 07/26/2012 | US20120186873 Well drilling method utilizing real time response to ahead of bit measurements |
| 07/25/2012 | EP1070191B1 Method and system for optimizing penetration rate |
| 07/25/2012 | CN202348254U Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig |
| 07/25/2012 | CN202348253U Drilling action logic control circuit of hydraulic rock drill |
| 07/25/2012 | CN102606132A Automatic grouting control method and automatic grouting control system in trip-up operation for oil drilling |
| 07/25/2012 | CN102606131A Top drive control system of hydraulic drive |
| 07/19/2012 | WO2012097257A2 Electrically engaged, hydraulically set downhole devices |
| 07/19/2012 | WO2012094746A1 Top drive output torque measurement method |
| 07/18/2012 | CN202338230U Automatic driller for motor |
| 07/12/2012 | WO2012094676A2 Apparatus and method for supplying electrical power to an electrocrushing drill |
| 07/12/2012 | WO2012094242A2 Method for a pressure release encoding system for communicating downhole information through a wellbore to a surface location |
| 07/12/2012 | WO2012094194A2 Low equivalent circulation density setting tool |
| 07/12/2012 | WO2012094164A2 Method and apparatus for multi-drop tool control |
| 07/12/2012 | CA2823836A1 Method for a pressure release encoding system for communicating downhole information through a wellbore to a surface location |
| 07/12/2012 | CA2823708A1 Low equivalent circulation density setting tool |
| 07/11/2012 | EP2474706A2 A system and method of forming an oil well |
| 07/11/2012 | CN202325466U Electrical electro-hydraulic integrated driller control system |
| 07/11/2012 | CN202325465U Power supply and signal uploading system integrated nipple |
| 07/11/2012 | CN202325464U 桩机冲锤自动控制装置 Pile hammer automatic control device |
| 07/11/2012 | CN202325463U 一种变频钻机自动化控制装置 One kind of automatic frequency control devices rig |
| 07/11/2012 | CN202325462U Electric control operating system of rotary drilling rig and rotary drilling rig provided with same |
| 07/11/2012 | CN202325441U 高压大排量水力射孔机组远程控制系统 High pressure and large displacement hydraulic perforating machine remote control system |
| 07/11/2012 | CN102575516A Methods to estimate downhole drilling vibration amplitude from surface measurement |
| 07/11/2012 | CN102562013A Automatic modulation and monitoring zonal injection method for water injection well and system thereof |
| 07/10/2012 | US8215417 Method, device and system for drilling rig modification |
| 07/05/2012 | WO2012092091A2 Remote actuation testing tool for high pressure differential downhole environments |
| 07/05/2012 | WO2012090175A2 System and method for performing downhole stimulation operations |
| 07/05/2012 | WO2012090174A2 System and method for performing downhole stimulation operations |
| 07/05/2012 | CA2823116A1 System and method for performing downhole stimulation operations |
| 07/05/2012 | CA2823115A1 System and method for performing downhole stimulation operations |
| 07/04/2012 | CN202300365U 旋挖钻机加压上、下限位保护系统 Pressurized rotary drilling rig, the lower limit protection system |
| 07/04/2012 | CN202300364U 一种自动升降式钻井平台钻机双控制装置 An automatic double-rig drilling platform lift control device |
| 07/04/2012 | CN202300363U 一种用于旋转导向钻井系统的测控装置 A rotary steerable drilling system for monitoring and control devices |
| 07/04/2012 | CN202300362U 牙轮钻机提升、行走和副卷扬三个功能控制装置 Rotary drill lifting, walking and auxiliary winch three function control device |
| 07/04/2012 | CN202298593U 升降和钻井系统 Lifting and drilling system |
| 07/04/2012 | CN1756893B Method and system for cause-effect time lapse analysis |
| 07/04/2012 | CN102536194A Hydraulic-driven automatic bit feeding control system with constant bit pressure |
| 07/04/2012 | CN102536193A Heavy-load pipe arranging robot |
| 07/04/2012 | CN102536192A Dynamic control system and control method for downhole directional power drilling tool face |
| 07/04/2012 | CN102536191A Automatic throttle control device for pressure-controlled well drilling |
| 07/04/2012 | CN102536190A Rotary drilling rig and integrated control system thereof |
| 07/04/2012 | CN102536189A Pressurization control method and system for rotary drilling rig |
| 07/04/2012 | CN102535445A Molding device and molding method for long spiral extruding rock-entering cast-in-place pile |
| 07/04/2012 | CN101798916B Rock entering drilling machine and control system and control method thereof |
| 07/04/2012 | CN101207352B Control method and control device of power supply soft launch for intermittent power supply by balance beam type pumping unit |
| 07/04/2012 | CN101158271B Oil-water well oil layer positioning deep penetration horizontal drilling device |
| 07/04/2012 | CN101139925B Method for while-drilling testing reservoir parameter property and adjusting well drilling action in real time |
| 07/03/2012 | US8214073 Designing drilling pattern for excavating rock cavern |
| 07/03/2012 | US8210278 Method for drilling rock |
| 07/03/2012 | CA2684423C Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product |
| 07/03/2012 | CA2619062C User interface for rock drilling rig |
| 06/28/2012 | WO2012087892A2 Method for controlling the downhole temperature during fluid injection into oilfield wells |
| 06/28/2012 | WO2012087864A2 Method of utilizing subterranean formation data for improving treatment operations |
| 06/28/2012 | WO2012084886A1 Controlling vibrations in a drilling system |
| 06/28/2012 | WO2012047837A3 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods |
| 06/28/2012 | CA2822756A1 Method for controlling the downhole temperature during fluid injection into oilfield wells |
| 06/28/2012 | CA2822344A1 Controlling vibrations in a drilling system |
| 06/27/2012 | EP2468960A1 Ground drilling method and apparatus. |
| 06/27/2012 | CN101629474B Ground-driven underground horizontal boring method for oil well |
| 06/27/2012 | CN101575940B Drilling operation method by utilizing dual drill drilling system |
| 06/21/2012 | WO2012083016A2 Method and apparatus for controlled or programmable cutting of multiple nested tubulars |
| 06/21/2012 | WO2012080819A2 Optimized drilling |
| 06/21/2012 | WO2012080812A2 Drilling optimization with a downhole motor |
| 06/21/2012 | WO2011080640A3 Look ahead advance formation evaluation tool |
| 06/21/2012 | CA2819319A1 Optimized drilling |
| 06/21/2012 | CA2819318A1 Drilling optimization with a downhole motor |
| 06/20/2012 | CN202280526U 一种可降低旋挖钻机油耗的控制装置 One kind of rotary drilling rig can reduce the fuel consumption of the control device |
| 06/20/2012 | CN101660404B Angle adjusting method of horizontal directional drilling machine in hard soil and soft rock and application thereof |
| 06/19/2012 | CA2629631C Method of drilling and producing hydrocarbons from subsurface formations |
| 06/14/2012 | WO2012078406A2 Well control operational and training aid |
| 06/14/2012 | WO2012047863A3 Remotely controlled apparatus for downhole applications and related methods |
| 06/14/2012 | US20120145455 Anti-stall tool for downhole drilling assemblies |
| 06/13/2012 | EP2462315A1 Methods to estimate downhole drilling vibration amplitude from surface measurement |
| 06/13/2012 | CN202273587U 钻孔射流式煤层割缝系统 Drilling jet coal slotting system |
| 06/13/2012 | CN102498261A Control system, rock drill rig and control method |
| 06/13/2012 | CN102493799A Vertical navigation controller for petroleum drilling |
| 06/13/2012 | CN102493798A Control method for halting drill pipe of piling machine on fixed point and drill pipe |
| 06/13/2012 | CN102493797A Remote monitor terminal, operating method decision system, method thereof and rotary drilling rig |
| 06/13/2012 | CN101489729B Method and device for rock drilling |
| 06/12/2012 | US8196678 Method of downlinking to a downhole tool |
| 06/12/2012 | US8196677 Horizontal drilling system |
| 06/12/2012 | CA2661851C A method for reaming in the construction of a well |
| 06/12/2012 | CA2636151C Measuring device, rock breaking device and method of measuring stress wave |
| 06/07/2012 | WO2012072870A1 Method for controlling drilling unit of rock drilling rig, and rock drilling rig |
| 06/07/2012 | US20120138362 Method and apparatus for automated drilling of a borehole in a subsurface formation |
| 06/07/2012 | CA2817845A1 Method for controlling drilling unit of rock drilling rig, and rock drilling rig |
| 06/07/2012 | CA2759641A1 Method and apparatus for automated drilling of a borehole in a subsurface formation |
| 05/31/2012 | WO2011104504A3 System and method for optimizing drilling speed |
| 05/31/2012 | WO2011064210A3 An apparatus and system and method of measuring data in a well extending below surface |
| 05/30/2012 | EP2458135A2 Method and device for semi-automatic adjustment of a handling device |
| 05/30/2012 | CN202250030U Intelligent and flexible reinforced concrete-drilling machine |