| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 07/21/2010 | CN101781970A Steel wire rope guide device used for rotary drilling rig and rotary drilling rig |
| 07/21/2010 | CN101215836B Construction machinery used for large diameter hollow pile and its construction method and use |
| 07/20/2010 | US7757786 Impact excavation system and method with injection system |
| 07/20/2010 | US7757784 Drilling methods utilizing independently deployable multiple tubular strings |
| 07/20/2010 | US7757783 Vibrational apparatus |
| 07/20/2010 | US7757782 Methods and apparatus for navigating a tool downhole |
| 07/20/2010 | US7757780 Excavating method and apparatus |
| 07/20/2010 | US7757764 Method for drilling and casing a wellbore with a pump down cement float |
| 07/20/2010 | CA2548171C Downhole steering tool having a non-rotating bendable section |
| 07/15/2010 | WO2010080946A2 Non-stick articles |
| 07/15/2010 | WO2010053812A3 Control package container |
| 07/15/2010 | US20100175924 Apparatus and method for improvements in wellbore drilling |
| 07/15/2010 | US20100175923 Orientation sensor for downhole tool |
| 07/15/2010 | US20100175922 Directional drilling control devices and methods |
| 07/15/2010 | US20100175882 Subsea Internal Riser Rotating Control Device System and Method |
| 07/14/2010 | EP2206876A1 Drilling head for drilling machine |
| 07/14/2010 | EP2205813A2 Method and device for testing the coating of a pipeline while laying the pipeline in a liquid-filled borehole |
| 07/14/2010 | CN201526283U Oil conduit connecting type anti-drop buffering safety device |
| 07/14/2010 | CN201526271U Crawler-type all-hydraulic tunnel drilling machine |
| 07/14/2010 | CN201526270U Multifunctional jumbo loader |
| 07/14/2010 | CN201526265U Engineering drill |
| 07/14/2010 | CN201526059U Combined machineshop truck |
| 07/14/2010 | CN201526057U Offshore oil pipe and pile hammer driving method penetration monitoring device |
| 07/14/2010 | CN101778992A Drill bit gauge pad control |
| 07/14/2010 | CN101775982A Microsphere hydraulic sidewall contact device |
| 07/14/2010 | CN101775960A Cast-in-situ cylinder pile rotary drilling rig |
| 07/14/2010 | CN101775959A Drilling machine of coaxial double-drill large-caliber multifunctional foundation pile |
| 07/13/2010 | US7753142 Drilling unit |
| 07/13/2010 | US7753141 Coiled tubing drilling system |
| 07/13/2010 | US7753139 Cutting device with multiple cutting structures |
| 07/13/2010 | US7753122 Method of developing and producing deep geothermal reservoirs |
| 07/13/2010 | US7752971 Adapter for shaped charge casing |
| 07/13/2010 | CA2460069C Percussion drilling head |
| 07/12/2010 | CA2689819A1 Systems and methods for guiding the drilling of a horizontal well |
| 07/12/2010 | CA2689815A1 Method and system for precise drilling guidance of twin wells |
| 07/08/2010 | WO2010078387A2 Liner drilling system with retrievable bottom hole assembly |
| 07/08/2010 | WO2010076561A1 Trenchless ducting apparatus frame |
| 07/08/2010 | WO2010076560A1 Trenchless ducting apparatus frame |
| 07/08/2010 | WO2010049326A3 Maintenance system |
| 07/08/2010 | WO2010017139A9 Apparatus and method for controlling the feed-in speed of a high pressure hose in jet drilling operations |
| 07/08/2010 | CA2648695A1 Method and apparatus for lateral well drilling utilizing an abrasive fluid stream discharged from a rotating nozzle |
| 07/07/2010 | CN201521293U Wireless while-drilling measuring device integrated with orientation and natural gamma ray |
| 07/07/2010 | CN201521246U Quick well formation device in soft soil layer |
| 07/07/2010 | CN201521245U Vertical drill hole gyroscope eccentric deviation correction device |
| 07/07/2010 | CN201521244U Four-crawler-type foundation drilling machine |
| 07/07/2010 | CN101772615A Downhole applications of composites having aligned nanotubes for heat transport |
| 07/07/2010 | CN101772614A Rotary steerable drilling system |
| 07/07/2010 | CN101769136A Underground diaphragm wall hydraulic multi-head drilling and milling device |
| 07/07/2010 | CN101769128A Connecting mechanism for dual shaft drilling machine |
| 07/07/2010 | CN101769127A Dual shaft-well drill |
| 07/07/2010 | CN101769126A Hydraulic middle-drive retractable multi-spindle drilling and stirring device |
| 07/06/2010 | US7749943 preventing freeze damage to latex particles in drilling fluid having rheological properties by providing drilling fluid with latex additive comprising aqueous solution of particles and 5 wt. % water soluble oxygenated organic molecules sufficient to maintain same latex particle size distribution |
| 07/06/2010 | US7748477 Boring system and method therefor |
| 07/06/2010 | US7748474 Active vibration control for subterranean drilling operations |
| 07/06/2010 | US7748471 Mobile self-erecting directional drilling rig apparatus |
| 07/06/2010 | CA2596318C Drilling and lining method using a spoolable tubing |
| 07/06/2010 | CA2589788C Method for casing drilling, drilling unit and adapter device |
| 07/06/2010 | CA2502698C Drill head steering |
| 07/01/2010 | WO2010072407A1 Rock drilling in great depths by thermal fragmentation using highly exothermic reactions evolving in the environment of a water-based drilling fluid |
| 07/01/2010 | WO2010036564A3 Modular rotary drill head |
| 07/01/2010 | US20100163311 Vertical direction adjustment tool for downhole drilling apparatus |
| 07/01/2010 | US20100163310 Method of manufacturing and repairing fixed-cutter drag-type rotary tools with cutting control structures |
| 07/01/2010 | US20100163309 Sub-Surface Deployment Valve |
| 07/01/2010 | US20100163308 Directional drilling control using periodic perturbation of the drill bit |
| 07/01/2010 | US20100163307 Drill Bits With a Fluid Cushion For Reduced Friction and Methods of Making and Using Same |
| 07/01/2010 | US20100163306 Modeling Vibration Effects Introduced By Mud Motor |
| 07/01/2010 | US20100163242 "Removing Air Wave Noise From Electromagnetic Survey Data" |
| 07/01/2010 | CA2785460A1 Rock drilling in great depths by thermal fragmentation using highly exothermic reactions evolving in the environment of a water-based drilling fluid |
| 06/30/2010 | EP2202382A2 Directional Drilling Control Using Periodic Perturbation of the Drill Bit |
| 06/30/2010 | EP2201208A1 Method and apparatus for rotary mining |
| 06/30/2010 | EP2201207A1 A device preferably for performing of a drilling in earth-layer and rock |
| 06/30/2010 | CN201517369U Multi-angle horizontal branch well natural gas extraction simulator |
| 06/30/2010 | CN201517368U High potential outburst coal mining face outburst preventing drill and self-travelling power pump station thereof |
| 06/30/2010 | CN201517367U Vehicle-mounted hole boring machine |
| 06/30/2010 | CN201517366U Device for rebuilding wellhead of runaway oil gas well with fire |
| 06/30/2010 | CN101761350A Rapid drilling device of small-bore tunnel bottom plate drill |
| 06/30/2010 | CN101761311A Underwater geotechnical drilling equipment and underwater geotechnical exploration method |
| 06/30/2010 | CN101761310A Drilling hole guiding and centering device of drilling machine |
| 06/30/2010 | CN101761106A Technology for automatically exploiting groundwater |
| 06/30/2010 | CN101187291B Multifunctional impact type well driller |
| 06/30/2010 | CN101063401B Internal combustion fluid jet boring device |
| 06/29/2010 | US7743851 Method and rock drilling rig for hole drilling |
| 06/29/2010 | US7743848 Boring tool tracking fundamentally based on drill string length, pitch, and roll |
| 06/29/2010 | US7743654 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 06/29/2010 | CA2436059C Method and system for accessing subterranean zones from a limited surface area |
| 06/24/2010 | WO2010071656A1 Pressure and flow control in drilling operations |
| 06/24/2010 | WO2010071563A1 Drilling tool for percussive rock drilling as well as an expendable kit, a ring drill bit and a casing shoe therefor |
| 06/24/2010 | US20100155143 Continuous fluid circulation valve for well drilling |
| 06/24/2010 | US20100155142 System and method for performing an adaptive drilling operation |
| 06/24/2010 | US20100155141 Method and system for installing geothermal transfer apparatuses with a sonic drill |
| 06/24/2010 | US20100155139 Proximity detection system for deep wells |
| 06/24/2010 | US20100155138 Wireline communication system for deep wells |
| 06/24/2010 | US20100155067 Systems and methods for using a passageway through subterranean strata |
| 06/24/2010 | CA2742623A1 Pressure and flow control in drilling operations |
| 06/23/2010 | EP2198112A2 Systems and methods for reducing backward whirling while drilling |
| 06/23/2010 | EP2198110A1 Bit assembly |
| 06/23/2010 | EP1753933B1 Systems and methods for remotely determining and changing cutting modes during decoking |
| 06/23/2010 | CN201513170U Test string for high-speed pressure controlling and water stabilizing test on horizontal well |
| 06/23/2010 | CN201513121U Radial micro-pore penetration drilling device for oil-water well |
| 06/23/2010 | CN201513120U Longitudinal and transversal movement device of drilling machine |