| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 02/23/2011 | CN101979829A Underground magnetic navigation method |
| 02/23/2011 | CN101979816A Coal bed gas horizontal well and drainage-mining straight well combined well drilling construction method |
| 02/22/2011 | US7891442 Flexible drill string member |
| 02/22/2011 | US7891440 Method and system for installing geothermal transfer apparatuses with a sonic drill and a removable or retrievable drill bit |
| 02/22/2011 | US7891439 Method of multistage manufacturing a ground bore |
| 02/22/2011 | US7891429 Riserless modular subsea well intervention, method and apparatus |
| 02/22/2011 | CA2517993C Method and apparatus for drilling with casing |
| 02/17/2011 | WO2011018610A2 Control systems and methods for directional drilling utilizing the same |
| 02/17/2011 | WO2011018432A1 Conductor casing deployment control system for oil or gas wells |
| 02/17/2011 | US20110036637 Seismic tool assembly for use in anchor insertion |
| 02/17/2011 | US20110036632 Control systems and methods for directional drilling utilizing the same |
| 02/17/2011 | US20110036631 Method and apparatus for controlling downhole rotational rate of a drilling tool |
| 02/17/2011 | US20110036630 Vibratory drilling machine |
| 02/17/2011 | US20110036608 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device |
| 02/17/2011 | DE20222014U1 Vorrichtung zum Spülbohren von Bohrlöchern in Böden Apparatus for directional drilling of wells in soils |
| 02/16/2011 | EP2283201A2 System and method for one-trip hole enlargement operations |
| 02/16/2011 | EP2283200A2 Kinetic energy harvesting in a drill string |
| 02/16/2011 | CN201747697U Telescopic hydraulic cylinder |
| 02/16/2011 | CN201747292U Drill rod fixing device and rotary drilling rig comprising thereof |
| 02/16/2011 | CN201747283U Rotary drilling machine and the drilling rod fixing device thereof |
| 02/16/2011 | CN201747273U Hydraulic balanced tap |
| 02/16/2011 | CN201747272U Backlash adjustment device for rotary drilling rig |
| 02/16/2011 | CN201747271U Frame clearance adjusting device for rotary drilling rig |
| 02/16/2011 | CN201747270U Longitudinal beam oil cylinder support lug structure of caterpillar rotary drilling rig |
| 02/16/2011 | CN201747269U Chassis guardrail of workover rig |
| 02/16/2011 | CN201747268U Hydraulic clamp tray of vehicle-mounted workover unit |
| 02/16/2011 | CN201747267U Operation mechanism of mine deep-hole drilling carriage |
| 02/16/2011 | CN201747262U Power head for underground drill rig |
| 02/16/2011 | CN201747261U Long twist drill for construction of anti-floating anchor rod |
| 02/16/2011 | CN201746831U Turbopump-lifting downhole and rotary drilling machine |
| 02/16/2011 | CN101978133A Ship for drilling and production in icy waters |
| 02/16/2011 | CN101978130A Devices and methods for horizontal directional drilling with a boring tool library |
| 02/16/2011 | CN101975077A High-outburst coal mine coal roadway drilling-loading-bolting integrated machine |
| 02/16/2011 | CN101975056A Coal-bed gas multi-branch horizontal well and construction method thereof |
| 02/16/2011 | CN101298831B High pressure gas jet flow boring tool with adjustable drilling direction |
| 02/16/2011 | CN101200996B Double freedom degree drill bit |
| 02/15/2011 | US7888939 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 02/15/2011 | US7886847 Monitoring flow rates while retrieving bottom hole assembly during casing while drilling operations |
| 02/15/2011 | US7886828 Floating vessel for supporting top tension drilling and production risers |
| 02/15/2011 | CA2372355C Method and apparatus to vibrate a downhole component |
| 02/10/2011 | WO2011017584A2 Drilling rig with hinged, retractable outriggers |
| 02/10/2011 | US20110031025 Drill Bit With An Adjustable Steering Device |
| 02/10/2011 | US20110031023 Borehole drilling apparatus, systems, and methods |
| 02/10/2011 | US20110031022 Directional drilling system |
| 02/10/2011 | US20110031021 Anti-Tracking Spear Points for Earth-Boring Drill Bits |
| 02/10/2011 | US20110031020 Wellbore percussion adapter and tubular connection |
| 02/10/2011 | US20110031019 Formation Dip Geo-Steering Method |
| 02/10/2011 | US20110031018 Horizontal drilling system |
| 02/10/2011 | US20110031016 Collision avoidance system with offset wellbore vibration analysis |
| 02/10/2011 | US20110031015 System and method for managing and/or using data for tools in a wellbore |
| 02/10/2011 | US20110030982 Hydraulic drilling machine for working in a small space |
| 02/10/2011 | DE102010027065A1 Bohrrohr für eine Bohrvorrichtung zum Ausführen von Horizontalbohrungen Drill pipe for drilling apparatus for performing horizontal wells |
| 02/10/2011 | CA2753417A1 Drilling rig with hinged, retractable outriggers |
| 02/09/2011 | EP2281103A1 Systems and methods for subsea drilling |
| 02/09/2011 | EP1756390B1 System for directional boring including a drilling head with overrunning clutch and method of boring |
| 02/09/2011 | CN201738819U Drilling moving frame |
| 02/09/2011 | CN201738813U Well drilling equipment and well fixing equipment for radial horizontal well with ultra-short radius |
| 02/09/2011 | CN201738812U Vehicle-mounted intermittent propulsion drilling device |
| 02/09/2011 | CN201738811U Vehicle-mounted drilling machine crown block rotating device |
| 02/09/2011 | CN201738810U Full-hydraulic screw drilling machine |
| 02/09/2011 | CN201738808U Hydraulic rock drill of excavator |
| 02/09/2011 | CN101970787A Subsea drilling system and method for operating the drilling system |
| 02/09/2011 | CN101967989A Crawler travel anchor transporting machine |
| 02/09/2011 | CN101967953A Large-torque rig equipment for coal mine underground tunnel |
| 02/09/2011 | CN101065554B A sidetracking system and method, and its milling cutter and whipstock |
| 02/09/2011 | CN101048582B A drill rig and a method for controlling a fan thereof |
| 02/08/2011 | US7884736 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems |
| 02/08/2011 | US7882904 Adjustable bent housing apparatus and method |
| 02/08/2011 | CA2597819C Method and device for producing a borehole in the soil |
| 02/08/2011 | CA2522035C Multi seam coal bed/methane dewatering and depressurizing production system |
| 02/03/2011 | WO2011012967A1 Earth drilling machine |
| 02/03/2011 | WO2010126925A3 Wellbore fluids employing sacrificial viscosifiers |
| 02/03/2011 | US20110024196 Steerable ground piercing tools |
| 02/03/2011 | US20110024194 System and method for one-trip hole enlargement operations |
| 02/03/2011 | US20110024193 Optimized central cutter and method |
| 02/03/2011 | US20110024191 Apparatus and methods for guiding toolface orientation |
| 02/03/2011 | US20110024187 Directional drilling control apparatus and methods |
| 02/03/2011 | DE102009058265A1 Vorrichtung zur Entnahme von strukturell unversehrten Bodenproben A device for taking soil samples of structurally intact |
| 02/03/2011 | CA2769283A1 Earth drilling machine |
| 02/02/2011 | EP2279327A2 Method and apparatus for controlling downhole rotational rate of a drilling tool |
| 02/02/2011 | CN201730645U Turbine generator for gas drilling |
| 02/02/2011 | CN201730547U Multifunctional rapid drilling machine |
| 02/02/2011 | CN201730541U Hydraulic auger drill |
| 02/02/2011 | CN101965436A Shaker deck adjustment apparatus |
| 02/02/2011 | CN101965435A A method for facilitating construction of a driling rig |
| 02/02/2011 | CN101962949A Long spiral double-pipe high-pressure stir-jet grouting pile construction method and device |
| 02/02/2011 | CN101629422B Construction method for supporting foundation ditch of reinforced cement earth wall |
| 02/01/2011 | US7878272 Forced balanced system |
| 02/01/2011 | US7878270 Methods and apparatus for drilling, completing and configuring U-tube boreholes |
| 02/01/2011 | US7878268 Oilfield well planning and operation |
| 02/01/2011 | US7878267 Rotary directional drilling apparatus and method of use |
| 02/01/2011 | US7878253 Hydraulically released window mill |
| 01/31/2011 | CA2855020A1 Rotating control device |
| 01/31/2011 | CA2711621A1 Rotating control device |
| 01/27/2011 | WO2011011505A2 Offshore drilling system |
| 01/27/2011 | WO2011011399A2 Slip ring apparatus for a rotary steerable tool |
| 01/27/2011 | US20110017513 Drilling unit, method for slot drilling and slotting device |
| 01/27/2011 | US20110017511 Offshore drilling system |
| 01/27/2011 | US20110017473 Slip ring apparatus for a rotary steerable tool |
| 01/27/2011 | US20110017445 Method and Device for Making Lateral Openings out of a Wellbore |