| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 10/22/2008 | EP1983147A2 Construction device, leads and method for mounting leads on construction device |
| 10/22/2008 | EP1983146A2 Drilling machine |
| 10/22/2008 | CN201137462Y Multifunctional impact type drilling machine |
| 10/22/2008 | CN201137461Y Frozen earth drill |
| 10/22/2008 | CN201137320Y Holing pole setting integrated machine |
| 10/22/2008 | CN201137157Y Deep layer agitation boring machine |
| 10/21/2008 | US7438132 Concentric pipes expanded at the pipe ends and method of forming |
| 10/20/2008 | CA2628981A1 Flexible drill shaft |
| 10/16/2008 | WO2008123791A1 Device for drilling oil and gas wells |
| 10/16/2008 | WO2008122696A1 Noise-dampening shield structure for rock drilling apparatus |
| 10/16/2008 | WO2008122694A1 Sound dampening housing for rock drill |
| 10/16/2008 | WO2008122403A1 Boring system |
| 10/16/2008 | WO2008005222A3 Elongated cross coil assembly for use in borehole location determination |
| 10/16/2008 | US20080251295 Underreaming and stabilization tool for use in a borehole and method for its use |
| 10/16/2008 | US20080251294 Self Actuating Underreamer |
| 10/16/2008 | US20080251293 Circumvolve cutters for drill bit |
| 10/16/2008 | US20080251267 Rig for drilling or maintaining oil wells |
| 10/16/2008 | CA2682341A1 Sound dampening housing for rock drill |
| 10/15/2008 | EP1980710A2 Rig for drilling or maintaining oil wells |
| 10/15/2008 | EP1980709A1 Method for simultaneous handling and loading of drilling rods and casings by means of two independent rotaries |
| 10/15/2008 | CN201133215Y Movable counterweight structure suitable for crawler belt walking device |
| 10/14/2008 | US7434618 Apparatus for expanding a tubular member |
| 10/14/2008 | CA2497631C Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks |
| 10/09/2008 | WO2008121004A1 Rotary drive for applying rotary torque to a shaft to be axially vibrated |
| 10/09/2008 | WO2008119821A2 Method and assembly for abrasive jet drilling |
| 10/09/2008 | WO2006076547A3 System and method for producing fluids from a subterranean formation |
| 10/09/2008 | US20080245574 Drilling and hole enlargement device |
| 10/09/2008 | US20080245568 System and Method for Drilling a Borehole |
| 10/09/2008 | CA2682246A1 Method and assembly for abrasive jet drilling |
| 10/09/2008 | CA2676263A1 Rotary drive for applying rotary torque to a shaft to be axially vibrated |
| 10/08/2008 | EP1978204A1 Earth drill |
| 10/08/2008 | EP1977073A1 Steerable drilling system |
| 10/08/2008 | CN201129141Y Pendulum hydraulic type automatic dip-rectification drilling tool |
| 10/08/2008 | CN201129140Y Crawler unit with off-center engine |
| 10/08/2008 | CN101283159A Drill string suspension |
| 10/08/2008 | CN101283158A Method and rock drilling rig for hole drilling |
| 10/08/2008 | CN101280688A Projecting coal bed drift face edge top drilling greater circulation regional eliminating projection method |
| 10/08/2008 | CN101280687A Projecting coal bed edge top drill construction technique and method for eliminating pumping blind zone |
| 10/08/2008 | CN101280682A Complete hydraulic self-drilling type side pressure equipment |
| 10/08/2008 | CN101280665A Mash gas pumping drilling orifice expanding bit as well as expanding method thereof |
| 10/07/2008 | US7431105 Geothermal heat loop installation |
| 10/07/2008 | US7431104 Device for transporting particles of a magnetic material and tool comprising such a device |
| 10/07/2008 | CA2444545C Sampling isolator |
| 10/07/2008 | CA2424395C Apparatus and methods for isolating a wellbore junction |
| 10/07/2008 | CA2419914C Drill string telemetry system and method |
| 10/07/2008 | CA2319470C Apparatus for running two tubing strings into a well |
| 10/02/2008 | WO2008118914A1 Parallel drilling and completion for a dry tree floating production facility |
| 10/02/2008 | WO2008088707A3 Drill stem guide and wrench apparatus |
| 10/02/2008 | WO2008028075B1 Method and system for managing a drilling operation in a multicomponent particulate system |
| 10/02/2008 | US20080236893 Downhole cutting tool and method |
| 10/02/2008 | US20080236892 Method of multistage manufacturing a ground bore |
| 10/02/2008 | US20080236853 Deep-hole boring machine and deep-hole boring guide device |
| 10/02/2008 | US20080236433 Rock Drill and Method of Breaking Rock |
| 10/02/2008 | DE102007015088A1 Verfahren zum mehrstufigen Herstellen einer Erdbohrung A method for producing a multi-stage ground drilling |
| 10/01/2008 | EP1975369A2 Method and system for accessing subterranean deposits from the surface |
| 10/01/2008 | EP1974122A1 Device and method for producing soil structures in the ground |
| 10/01/2008 | CN201125673Y Loose ground drawing hole device |
| 10/01/2008 | CN201125388Y Ground anchor rotary feed device for oilfield operation headstorck to fix stretch tight rope |
| 09/30/2008 | US7428927 Cement float and method for drilling and casing a wellbore with a pump down cement float |
| 09/30/2008 | CA2476787C Integrated magnetic ranging tool |
| 09/25/2008 | WO2008114102A1 Coiled tubing and drilling system |
| 09/25/2008 | WO2008113844A1 Distance holder with helical slot |
| 09/25/2008 | WO2008113843A1 Distance holder with jet deflector |
| 09/25/2008 | WO2008045381B1 Dual subsea production chokes for high pressure well production |
| 09/25/2008 | US20080230276 Portable drilling device |
| 09/25/2008 | US20080230275 Impact Excavation System And Method With Injection System |
| 09/25/2008 | US20080230272 Method and System for Designing Bottom Hole Assembly Configuration |
| 09/25/2008 | US20080230270 Arrangement for Positioning Rock Drilling Rig on Drilling Site |
| 09/25/2008 | US20080230229 Method of Running a Tubing Hanger and Internal Tree Cap Simultaneously |
| 09/25/2008 | CA2680454A1 Distance holder with helical slot |
| 09/25/2008 | CA2680429A1 Distance holder with jet deflector |
| 09/25/2008 | CA2657826A1 Coiled tubing and drilling system |
| 09/24/2008 | EP1608840B1 Directional reaming system |
| 09/24/2008 | CN201121494Y Drilling tool drag reduction machine |
| 09/24/2008 | CN201121488Y Drilling bit plug for casing tube well drilling |
| 09/24/2008 | CN201121487Y Deepwater drilling device based on near surface deviation |
| 09/24/2008 | CN201121486Y Shunting type automatically vertical drilling tool suitable for gas drilling |
| 09/24/2008 | CN101270637A Well building method for preventing brine seepage in salt wells |
| 09/24/2008 | CN101270573A Large area sawed joint cutting construction method of concrete gravity dam cross joint |
| 09/23/2008 | US7426967 Rotary steerable tool including drill string rotation measurement apparatus |
| 09/23/2008 | CA2507787C Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling |
| 09/23/2008 | CA2480259C Retrievable through tubing whipstock apparatus having fluid-responsive pivotal anchoring members |
| 09/23/2008 | CA2365966C Method of creating a wellbore in an underground formation |
| 09/18/2008 | WO2008112272A1 System, method, and apparatus for passive and active updrill features on roller cone drill bits |
| 09/18/2008 | US20080223617 Deviated Drilling Method for Water Production |
| 09/18/2008 | US20080223615 Methods and Apparatus for Forming Hole in Ground |
| 09/18/2008 | US20080223575 Casing and liner drilling bits and reamers, cutting elements therefor, and methods of use |
| 09/18/2008 | US20080223572 Method for drilling and casing a wellbore with a pump down cement float |
| 09/18/2008 | DE102007012055A1 Drilling device, particularly for soil drilling and rock drilling and for drilling arrangement, has rod element and two clamping units for drilling rods, which are arranged at rod element in axially displaced manner |
| 09/17/2008 | EP1970493A2 Soil sampling apparatus |
| 09/17/2008 | EP1968421A1 Particle separator for separating drill cuttings from an air flow and a drill rig as well as a method for controlling a particle separator |
| 09/17/2008 | CN101268247A A percussion hammer for enlarging drilled holes |
| 09/17/2008 | CN101268246A Steerable drilling system |
| 09/17/2008 | CN100419203C Recovery type whipstock set |
| 09/12/2008 | WO2008107142A1 Drilling method and apparatus |
| 09/12/2008 | CA2679561A1 Reservoir stimulation while running casing related applications |
| 09/11/2008 | US20080217987 Drilling apparatus and system for drilling wells |
| 09/11/2008 | US20080217069 Auger boring machine with included pilot tube steering mechanism |
| 09/11/2008 | US20080217066 Lubricated pilot tubes for use with auger boring machine pilot steering system |
| 09/11/2008 | US20080217063 In-situ molded non-rotating drill pipe protector assembly |