| 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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| 04/23/2008 | CN201050340Y Double-walled drilling faucet |
| 04/23/2008 | CN201050317Y Suspension sub of auxiliary bushing |
| 04/22/2008 | CA2357402C Method and system for predicting performance of a drilling system for a given formation |
| 04/22/2008 | CA2238334C Autonomous downhole oilfield tool |
| 04/17/2008 | US20080087467 Arrangement for Controlling Percussive Rock Drilling |
| 04/16/2008 | CN201047280Y Chain-driven drilling machine gas-liquid electronic control system |
| 04/15/2008 | US7357197 Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface |
| 04/15/2008 | US7357196 Method and system for predicting performance of a drilling system for a given formation |
| 04/15/2008 | CA2489928C Apparatus and method of monitoring and signaling for downhole tools |
| 04/15/2008 | CA2352615C Method of and system for monitoring drilling parameters |
| 04/10/2008 | US20080083564 Apparatus and method to control the rotation of a downhole drill bit |
| 04/09/2008 | CN101160450A Method, arrangement and valve for controlling rock drilling |
| 04/09/2008 | CN101160449A A method and system for controlling an excavating apparatus |
| 04/09/2008 | CN101158271A Oil-water well oil layer positioning deep penetration horizontal drilling device |
| 04/09/2008 | CN100379936C Automatically controlled rotation-controllable drilling system |
| 04/08/2008 | CA2509347C Method of and apparatus for directional drilling |
| 04/08/2008 | CA2487222C Downhole tool sensor system and method |
| 04/08/2008 | CA2423107C Well drilling method and system |
| 04/03/2008 | CA2605045A1 Real time telemetry |
| 04/01/2008 | US7350594 System and method for tracking and communicating with a boring tool |
| 04/01/2008 | US7350593 Electronically controlled earth drilling rig |
| 04/01/2008 | CA2474230C Command method for a steerable rotary drilling device |
| 03/27/2008 | WO2008036522A2 Method of directional drilling with steerable drilling motor |
| 03/27/2008 | WO2008036013A1 Method and device for rock drilling |
| 03/27/2008 | US20080073121 Laser Control System and Apparatus for Drilling and Boring Operations |
| 03/27/2008 | CA2663533A1 Method of directional drilling with steerable drilling motor |
| 03/27/2008 | CA2658329A1 Method and device for rock drilling |
| 03/26/2008 | EP1903178A2 Three dimensional steerable system |
| 03/26/2008 | EP1902196A1 Method and apparatus for collecting drill bit performance data |
| 03/26/2008 | CN201041027Y Double-control automatic drill-supplier |
| 03/26/2008 | CN101148972A Electric percussion drilling device based on accumulator power supply |
| 03/26/2008 | CN100376763C Strapdown type stable platform apparatus |
| 03/25/2008 | US7347255 Device for detecting water in product-only pump flow stream |
| 03/20/2008 | US20080066959 Method and apparatus for collecting drill bit performance data |
| 03/20/2008 | US20080066958 Method of directional drilling with steerable drilling motor |
| 03/20/2008 | US20080066903 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/19/2008 | EP1899577A1 Arrangement for controlling pressure-fluid-operated drilling equipment |
| 03/19/2008 | EP1899576A1 Method and system for controlling power consumption during rock drilling and rock drilling apparatus incorporating such a system |
| 03/19/2008 | CN101144369A Electric percussion drilling device based on pore bottom turbo-generator unit power supply |
| 03/18/2008 | US7343974 Method and apparatus for performing chemical treatments of exposed geological formations |
| 03/13/2008 | WO2008029000A1 Method for drilling rock |
| 03/13/2008 | US20080065331 Method and apparatus for collecting drill bit performance data |
| 03/13/2008 | US20080060848 Method and apparatus for collecting drill bit performance data |
| 03/13/2008 | US20080060807 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060806 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060805 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060804 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060799 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060571 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/12/2008 | EP1896688A2 Pipe running tool having a primary load path |
| 03/12/2008 | EP1896684A1 Arrangement for positioning drilling unit |
| 03/12/2008 | CN101139925A Method for while-drilling testing reservoir parameter property and adjusting well drilling action in real time |
| 03/07/2008 | CA2600602A1 Annulus pressure control drilling systems and methods |
| 03/06/2008 | WO2008026011A1 A method for reaming in the construction of a well |
| 03/06/2008 | US20080053213 Method and system for managing a drilling operation in a multicomponent particulate system |
| 03/05/2008 | CN201031687Y Drilling working condition monitoring arrangement |
| 03/05/2008 | CN201031686Y Well repairing working condition monitoring arrangement |
| 03/05/2008 | CN201031685Y Electric control gear for safely using rotary digging drilling machine |
| 03/05/2008 | CN101135236A Collectively monitored throttling and controlling device |
| 02/28/2008 | US20080047750 Boring Tool Tracking Fundamentally Based on Drill String Length, Pitch and Roll |
| 02/27/2008 | EP1466076B1 Data transmission system |
| 02/27/2008 | CN201027538Y Digitized control device of oil-well rig |
| 02/27/2008 | CN201027537Y Control device for drilling machine driven by digitized AC variable-frequency electricity |
| 02/26/2008 | CA2376211C Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 02/21/2008 | US20080041149 Drilling system and method |
| 02/20/2008 | EP1888877A1 Method and device |
| 02/20/2008 | CN201025021Y Petroleum driller electrical-gas control device |
| 02/14/2008 | WO2008017732A1 Rock drilling apparatus and method for controlling rock drilling apparatus |
| 02/14/2008 | US20080035378 Method of drilling a bore hole |
| 02/14/2008 | US20080034856 Reduced-length measure while drilling apparatus using electric field short range data transmission |
| 02/13/2008 | EP1885995A1 Control device |
| 02/12/2008 | CA2300004C Electronically controlled electric wireline setting tool |
| 02/07/2008 | US20080030366 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems |
| 02/05/2008 | US7325607 Methods and systems for using high-yielding non-Newtonian fluids for severe lost circulation prevention |
| 02/05/2008 | US7325606 Methods and apparatus to convey electrical pumping systems into wellbores to complete oil and gas wells |
| 01/30/2008 | CN201013351Y Driller blocking-proof hydraulic equipment |
| 01/30/2008 | CN201013350Y Self-elevating drilling rig driller control redundant apparatus |
| 01/30/2008 | CN201013349Y Self-elevating drilling rig distributed electrical control system |
| 01/30/2008 | CN201013348Y Self-elevating drilling rig power management system |
| 01/30/2008 | CN201013347Y Monitoring apparatus for well-repairing automatic level |
| 01/30/2008 | CN201013312Y Oil extraction load simulator |
| 01/29/2008 | US7322425 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 01/29/2008 | CA2330197C Downward communication in a borehole through drill string rotary modulation |
| 01/29/2008 | CA2267508C Apparatus for static underground drilling |
| 01/22/2008 | US7320370 Automatic downlink system |
| 01/20/2008 | CA2776346A1 Method of selecting drill bits |
| 01/20/2008 | CA2594012A1 Method of selecting drill bits |
| 01/17/2008 | WO2007087388A3 Control system |
| 01/16/2008 | CN201007201Y Touch prevention travelling overhead crane automatic control device |
| 01/16/2008 | CN101105119A Pumping unit balance adjusting apparatus and pumping unit balance structure adjusting method |
| 01/15/2008 | US7318488 Method for classifying data measured during drilling operations |
| 01/15/2008 | CA2343947C Through-drill string conveyed logging system |
| 01/15/2008 | CA2238998C Remotely accessible mobile repair unit for wells |
| 01/10/2008 | WO2008005222A2 Elongated cross coil assembly for use in borehole location determination |
| 01/09/2008 | EP1875042A1 Method, arrangement and valve for controlling rock drilling |
| 01/09/2008 | CN201003372Y Modular drilling machine |
| 01/08/2008 | US7316278 Method for determining drilling malfunction by correlation of drilling operating parameters and drilling response parameters |
| 01/08/2008 | US7316277 Bottom hole assembly |
| 01/08/2008 | CA2473495C System and method for autonomously performing a downhole well operation |
| 01/03/2008 | US20080000686 Elongated cross coil assembly for use in borehole location determination |