| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 09/11/2008 | US20080217062 Drilling apparatus and system for drilling wells |
| 09/11/2008 | US20080217060 Auger boring machine with two-stage guidance control system |
| 09/11/2008 | US20080217058 Heating device for passage through subterranean asphalt and method of use |
| 09/11/2008 | US20080217038 Percussion adapter for positive displacement motors |
| 09/11/2008 | US20080217037 Excavation apparatus |
| 09/11/2008 | US20080217022 Subsea communications multiplexer |
| 09/10/2008 | EP1967689A2 Linear positioning sensor for downhole tools |
| 09/10/2008 | EP1966489A2 Method of developingand producing deep geothermal reservoirs |
| 09/10/2008 | EP1751393B1 Telescopic feed beam for rock drill |
| 09/10/2008 | CN101260784A Tunnel advanced support air circulated drilling construction method and drilling tool |
| 09/10/2008 | CN101260783A Prebending kinetics deviation control and fast drilling method |
| 09/10/2008 | CN101260782A Method and device for enhancing borehole accuracy |
| 09/10/2008 | CN101259905A Load-carrying water bag and use thereof |
| 09/10/2008 | CN101258814A Planting hole and method for using planting hole to green rock slope and breakage mountain body |
| 09/09/2008 | US7422076 Autoreaming systems and methods |
| 09/09/2008 | US7422059 Fluid injection stimulated heavy oil or mineral production system |
| 09/09/2008 | US7422057 Whipstock with curved ramp |
| 09/09/2008 | CA2569070C Bearing pre-load assembly for a steerable rotary drilling device |
| 09/09/2008 | CA2564116C Anti-rotation device for a steerable rotary drilling device |
| 09/04/2008 | US20080213048 Method for fabricating and transporting an integrated buoyancy system |
| 09/04/2008 | US20080210472 Impact Excavation System And Method With Particle Separation |
| 09/04/2008 | US20080210469 Angle drilling device |
| 09/04/2008 | US20080210466 Offshore thermal treatment of drill cuttings fed from a bulk transfer system |
| 09/03/2008 | EP1964756A1 Pendulum chassis, in particular for a drill |
| 09/03/2008 | CN201110127Y Drilling tool combination being suitable for quick welldrilling |
| 09/03/2008 | CN101258301A One-piece drill bit for single-pass anchor bolting and single pass drilling apparatus |
| 09/03/2008 | CN100416039C Method and device for moving tube in borehole in ground |
| 09/02/2008 | CA2494283C Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production |
| 08/28/2008 | WO2008103031A1 Apparatus for driving elongated elements into the ground |
| 08/28/2008 | WO2008101285A1 Method and apparatus for modelling the interaction of a drill bit with the earth formation |
| 08/28/2008 | US20080202815 Containing hydrocarbyl polyether phosphate; lubricants; well completion |
| 08/28/2008 | DE102007009773A1 Verfahren zum Einbringen von Erdwärmesonden in das Erdreich und eine Vorrichtung A method of introducing geothermal probes into the soil and a device |
| 08/27/2008 | EP1960122A1 A vibratory apparatus for a rotary-vibratory drill |
| 08/27/2008 | EP1339938B1 Boring apparatus |
| 08/27/2008 | CN201106403Y Wire cable sealing device special for casing tube welldrilling |
| 08/27/2008 | CN201106402Y Pump enter pipe nipple special for casing tube welldrilling mouth |
| 08/27/2008 | CN101253471A Adaptive user interface for rock drilling rig |
| 08/27/2008 | CN101253308A User interface for rock drilling rig |
| 08/27/2008 | CN101250982A Mechanical automatic vertical drilling tool |
| 08/27/2008 | CN101250981A Construction method for accurate locating small distance air face hole-drilling |
| 08/27/2008 | CN101250980A Self-aligning open-hole tractor |
| 08/27/2008 | CN101250979A Rockbolt drilling machine |
| 08/27/2008 | CN101250977A Drilling unit head of deep sea drill core sampling drilling machine |
| 08/26/2008 | US7416258 Methods of using a laser to spall and drill holes in rocks |
| 08/26/2008 | US7416032 Pulsed electric rock drilling apparatus |
| 08/26/2008 | US7416023 Formation pressure testing apparatus with flexible member and method of formation pressure testing |
| 08/26/2008 | CA2507732C Methods of completing a subterranean well and associated apparatus |
| 08/26/2008 | CA2239585C Well drilling and servicing fluids and methods of increasing the low shear rate viscosity thereof |
| 08/21/2008 | WO2008100201A1 Method and device for determining the position of a mining and/or construction machine as well as drilling rig comprising such a device |
| 08/21/2008 | US20080196944 Impact excavation system and method with suspension flow control |
| 08/21/2008 | DE112006002578T5 Verfahren zum Bohren mit einem Bohrlochliner A method of drilling a borehole liner |
| 08/21/2008 | DE102008000070A1 Method for cleaning earth drill has additional scrapers to remove soil from lifted drill with servo drive to enhance cleaning effect |
| 08/21/2008 | DE102007007766A1 Boring tool e.g. rod-driven boring tool, component for horizontal boring, has two metallic end caps defining ends respectively, where non-metallic housing section extends between two end caps |
| 08/20/2008 | EP1957744A1 Method for varying the density of drilling fluids in deep water oil and gas drilling applications |
| 08/20/2008 | EP1567747B1 Method to install underground pipe casing |
| 08/20/2008 | CN101248248A Method and apparatus for conducting earth borehole operations using coiled casing |
| 08/20/2008 | CN101245594A Bidirectional stirring pile machine |
| 08/20/2008 | CN100412311C Method and apparatus for realizing double-gradient well drilling |
| 08/20/2008 | CN100412274C Club-footed pile and its construction method |
| 08/19/2008 | US7413035 Reusable auger barrel |
| 08/19/2008 | US7413034 Steering tool |
| 08/19/2008 | US7413033 Directional drill head |
| 08/19/2008 | US7413032 Self-controlled directional drilling systems and methods |
| 08/19/2008 | US7413031 Apparatus and method for maintaining control of a drilling machine |
| 08/19/2008 | US7413020 Full bore lined wellbores |
| 08/19/2008 | CA2526153C Whipstock assembly for a sleeved casing |
| 08/19/2008 | CA2379213C Magnetorheological fluid apparatus, especially adapted for use in a steerable drill string, and method of using same |
| 08/16/2008 | CA2578879A1 Adjustable bent housing with single offset |
| 08/14/2008 | WO2008098052A2 Well perforating system with orientation marker |
| 08/14/2008 | WO2008098047A2 Well perforating gun with stress relieved scallops |
| 08/14/2008 | WO2008097101A1 Assembly for drilling and logging, method for drilling and logging and device for electro pulse drilling |
| 08/14/2008 | WO2008061071A3 System, apparatus and method for abrasive jet fluid cutting |
| 08/14/2008 | US20080190666 Gage insert |
| 08/14/2008 | US20080190665 Rotary Vector Gear for Use in Rotary Steerable Tools |
| 08/14/2008 | US20080190664 Soil testing apparatus |
| 08/14/2008 | US20080190663 Method and System for Return of Drilling Fluid |
| 08/14/2008 | US20080190624 Method for Drilling Oil and Gas Wells |
| 08/14/2008 | DE102007005944A1 Schrägbohrgerät Oblique drill |
| 08/13/2008 | EP1954910A1 Method and apparatus for installing deflecting conductor pipe |
| 08/13/2008 | EP1747344B1 Enlarging and stabilising tool for a borehole and method for the use thereof |
| 08/13/2008 | CN201100096Y Hydraulic pneumatic tunnel contact net drilling trolley |
| 08/13/2008 | CN101240693A Method for carrying dry well casing after gas drilling |
| 08/13/2008 | CN100410485C Construction method for push pipe by cooperation of horizontal auger driller and horizontal directional driller |
| 08/13/2008 | CA2578388A1 Combined diretional and impact drilling motor |
| 08/12/2008 | US7410013 Boring and drilling apparatus |
| 08/12/2008 | US7410012 Hydraulic automatic boosting pump |
| 08/12/2008 | CA2164774C Retrievable through tubing tool and method |
| 08/07/2008 | WO2008092256A1 Down hole multiple piston tools operated by pulse generation tools and methods for drilling |
| 08/07/2008 | WO2008045381A3 Dual subsea production chokes for high pressure well production |
| 08/07/2008 | WO2008036740A3 Systems and methods for drilling and producing subsea fields |
| 08/07/2008 | WO2008036709A3 Apparatus and method for packaging rotary drill bits |
| 08/07/2008 | US20080185186 Drilling assembly |
| 08/07/2008 | US20080185152 Pressure control with compliant guide |
| 08/07/2008 | US20080185148 Whipstock assembly for forming a window within a wellbore casing |
| 08/07/2008 | DE102006022613B4 Bohrantriebseinheit und Bohrgerät Bohrantriebseinheit and drill |
| 08/07/2008 | CA2667584A1 Down hole multiple piston tools operated by pulse generation tools and methods for drilling |
| 08/06/2008 | EP1951985A1 A bearing in connection with a boom |
| 08/06/2008 | EP1386387B1 Downhole torque generator |
| 08/06/2008 | CN201095956Y Hole reverse pushing device |
| 08/06/2008 | CN201095748Y Rectangular and square filling pile pore-forming combined drilling tool |