Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 7 - Special methods or apparatus for drilling
Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
11/2012
11/21/2012EP2524101A1 Bearing contact pressure reduction in well tools
11/21/2012CN202544778U Rotatable positioning whipstock anchoring device
11/21/2012CN202544752U High pressure jet device
11/21/2012CN202544750U Drillable drill of surface casing
11/21/2012CN202544747U Self-lubricating slurry shaft module and vehicle-mounted drilling machine using same
11/21/2012CN202544746U Self-propelled machine integrating pile driving-and-extracting with boring
11/21/2012CN202544745U Lengthened drilling arm convenient to transport for drilling machine
11/21/2012CN202544744U Multi-functional road pile driller
11/21/2012CN202544743U Drilling machine
11/21/2012CN202544740U Power head for vehicle-mounted drilling machine and vehicle-mounted coalbed gas drilling machine using same
11/21/2012CN102791958A Method of presenting positioning information, user interface, and rock drilling rig
11/21/2012CN102791952A Method of drilling and abrasive jet drilling assembly
11/21/2012CN102787804A Device and method for drilling by using full-automatic composite material continuous pipe
11/21/2012CN102787803A Full-hydraulic multi-functional strip mine drilling machine
11/21/2012CN101787855B Reentry device of later-operation pipe column of multi-branch well
11/21/2012CN101781972B Crawler-type lifting top and slope bolt and anchor construction drill
11/21/2012CN101705789B Hydraulic pulse cavitation jet well drilling method
11/21/2012CN101566044B Automatic vertical well drilling tool utilizing aerodynamics
11/20/2012US8312939 Method and system for laterally drilling through a subterranean formation
11/20/2012US8312938 Vertizontal geothermal loop and installation method
11/20/2012US8312933 Marine drilling riser system
11/15/2012WO2012154057A1 Device and method for pressure regulation of a well
11/15/2012WO2012118992A3 High performance wellbore departure and drilling system
11/15/2012WO2012088102A3 Method and apparatus for milling a zero radius lateral window in casing
11/15/2012WO2012076617A3 Vibration transmission and isolation
11/15/2012WO2012076401A3 Resonance enhanced rotary drilling module
11/15/2012US20120285746 Device for directional drilling
11/15/2012US20120285745 Drilling fluids
11/15/2012US20120285744 Pressure and flow control in drilling operations
11/15/2012US20120285700 Harvesting By-Passed Resource
11/15/2012DE202012005973U1 Erdwurm Earthworm
11/15/2012DE102011101442A1 Carriage for tunneling device for positioning soil displacement hammer in starting pit, has hammer that is lowered by height adjusting unit at predetermined angle with respect to starting pit
11/15/2012CA2834822A1 Device and method for directional drilling
11/14/2012CN202531055U Integrated type vehicle-mounted workover rig capable of operating with pressure
11/14/2012CN202531027U Multi-blade cutting hydraulic hole enlarger
11/14/2012CN202531026U Drilling machine for construction of inclined pile
11/14/2012CN202531025U Folding type driller platform of vehicle-mounted workover rig working under pressure
11/14/2012CN202531024U 90-degree rotating deep hole drill carriage for coal mine
11/14/2012CN202531023U 180-degree deep hole drill carriage for coal mine
11/14/2012CN202531022U Coal mine high-applicability deep hole drill carriage capable rotating by 90 degrees
11/14/2012CN202531021U Safe and stable 90-degree rotating coal mine deep hole boring rig
11/14/2012CN202531020U Long earth auger using hydraulic main hoist
11/14/2012CN202531019U Multi-blade cutting hydraulic hole enlarging drilling machine
11/14/2012CN102782242A Hybrid buoyed and stayed towers and risers for deepwater
11/14/2012CN102782241A Rock drilling rig, method for rock drilling, and control system of rock drilling rig
11/14/2012CN102782219A Steel wall and construction method for steel wall
11/14/2012CN102777180A Method for actively and regionally preventing and controlling rock burst in coal mines
11/14/2012CN102777135A Expanding drill and pile forming method
11/14/2012CN102777125A Monitoring electrohydraulic control pile foundation enlarged base device
11/14/2012CN102777124A Integrated core drilling machine for single-cylinder double-acting tower crane
11/14/2012CN102777123A High-expansibility naked eye suspension adhering system and method
11/14/2012CN102086755B Continuous oil pipe-based guide high-pressure jet drilling system
11/14/2012CN101979816B Coal bed gas horizontal well and drainage-mining straight well combined well drilling construction method
11/14/2012CN101942962B Well drilling method of through tubing of gas lift under-balanced coiled tubing
11/14/2012CN101737009B Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc
11/14/2012CN101484658B Coupling for dual member pipe
11/14/2012CN101451427B Drilling device and drilling method
11/14/2012CN101253471B Adaptive user interface for rock drilling rig
11/13/2012US8307914 Drill bits and methods of drilling curved boreholes
11/13/2012CA2700258C Directional drilling control
11/13/2012CA2586298C Rotary steerable drilling system
11/12/2012DE202012008036U1 Vortriebseinheit Propulsion unit
11/08/2012US20120279784 Slide reamer and stabilizer tool
11/08/2012US20120279783 Apparatus and Method for Drilling Wellbores Based on Mechanical Specific Energy Determined from Bit-Based Weight and Torque Sensors
11/08/2012US20120279782 Laser alignment device for use with a drill rig
11/08/2012DE102011100691A1 Bohrgerät und Verfahren zum Betreiben eines Bohrgeräts Drill and method of operating a drill
11/08/2012DE102011100358A1 Device for lead-through of vertical, inclined or horizontal bores in ground, has horizontally placed drill pipe and devices for coupling or decoupling individual drill pipes, for lifting or lowering or pulling or sliding drill pipe
11/08/2012DE102011100186A1 "Gestänge und Vorrichtung zum grabenlosen Sanieren von Rohrleitungen" "Linkage and apparatus for grave loose renovation of pipelines"
11/08/2012CA2834915A1 Liner cementation process and system
11/07/2012EP2520755A2 Rod and device for retrofitting pipelines without digging
11/07/2012EP2519707A1 Downhole guiding tool
11/07/2012EP2519420A1 Mining vehicle and method for its energy supply
11/07/2012EP2519419A1 Mining vehicle and method for its energy supply
11/07/2012EP2519418A1 Rock drilling device
11/07/2012CN202520259U Tooth division core drill
11/07/2012CN202520224U Coal seam drilling, seam cutting and pressure releasing device
11/07/2012CN202520223U Outdoor portable steam drill
11/07/2012CN202520222U Novel submarine deep-hole pressure-maintaining core drilling machine
11/07/2012CN202520221U Control device applied to traveling mechanism of drilling machine
11/07/2012CN102767333A Particle impact drilling simulation experiment method and device thereof
11/07/2012CN102767332A Screw pile machine and cast-in place pile construction method
11/07/2012CN102767331A Movable drill rig
11/07/2012CN102182397B Multi-angle coal petrography drilling machine
11/07/2012CN101929310B Active alternating magnetic field information-based method for guiding and positioning well drilling track
11/07/2012CN101915061B Alternating magnetic field guiding device
11/07/2012CN101629470B Drilling construction method for dry rock-socketed bored pile
11/07/2012CN101313125B A bearing in connection with a boom
11/07/2012CN101250981B Construction method for accurate locating small distance air face hole-drilling
11/06/2012US8302706 Apparatus and method for installing ground anchoring systems
11/06/2012US8302705 Steering system
11/06/2012US8302704 Steering head
11/06/2012US8302703 Method and apparatus for hydraulic steering of downhole rotary drilling systems
11/06/2012US8302693 Wireless downhole tool positioning system
11/01/2012WO2012148782A2 Offshore fluid transfer systems and methods
11/01/2012WO2012091985A3 Plasma charges
11/01/2012WO2012087752A4 High temperature drilling motor drive with cycloidal speed reducer
11/01/2012WO2012023043A3 High load universal joint for downhole rotary steerable drilling tool
11/01/2012US20120273277 Method of drilling and jet drillilng system
11/01/2012US20120273276 Method and Jetting Head for Making a Long and Narrow Penetration in the Ground
11/01/2012US20120273275 Method and apparatus for dual speed, dual torque drilling
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