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)
09/2012
09/26/2012CN202451058U Bearing-type roller device of reamer
09/26/2012CN202451057U Special slewing drilling machine for water floating platform
09/26/2012CN202451056U Expansion tube positioning whipstock
09/26/2012CN202451055U Drilling locating device for down-the-hole drill
09/26/2012CN202451054U Rotary drilling guider
09/26/2012CN202451053U 180-degree anchor rod drill carriage for coal mine
09/26/2012CN202451052U Vehicle-mounted type rock-core drilling machine
09/26/2012CN202451051U Casing drilling machine while drilling for casing pile construction method while drilling
09/26/2012CN102691323A Multifunctional engineering machinery based on excavator platform
09/26/2012CN101992937B Helical conveyor grouting antifriction mechanism for earth pressure balance push bench
09/26/2012CN101871320B Automatic hydraulic offset-correcting method for horizontal drilling and specific drilling tool
09/26/2012CN101586440B Oriented rotational guide drilling tool
09/26/2012CN101466911B Method and apparatus for oscillating a drill string
09/25/2012US8272455 Methods for forming wellbores in heated formations
09/25/2012CA2687174C A system for geothermal loop installation
09/25/2012CA2666180C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
09/25/2012CA2641982C Sonic drill head
09/25/2012CA2609737C Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material
09/20/2012WO2012125196A1 Composite frac ball
09/20/2012WO2012087752A3 High temperature drilling motor drive with cycloidal speed reducer
09/20/2012WO2012015894A8 System and method for directional drilling
09/20/2012US20120234780 Compact portable auger rack for single-operator function
09/20/2012US20120234605 Apparatus and methods of locating downhole anomalies
09/20/2012US20120234604 Timed Steering Nozzle on a Downhole Drill Bit
09/20/2012US20120234603 Mud motor assembly
09/20/2012US20120234602 Method and means for installing geothermal heat loops
09/20/2012US20120234601 Bit breaker
09/20/2012US20120234600 Downhole Rebound Hardness Measurement While Drilling or Wireline Logging
09/20/2012US20120234551 System and Method For Drilling A Well That Extends For A Large Horizontal Distance
09/20/2012DE10345700B4 Bohrkopf Wellhead
09/19/2012EP2499326A1 Jacking units and bellows for down hole intervention tools
09/19/2012EP2499325A1 Method for coupling of a casing tube to a drill bit
09/19/2012EP2499322A2 Downhole tractor
09/19/2012EP2499321A1 Injection drill bit
09/19/2012CN202441268U Water filling drill
09/19/2012CN202441258U Multifunctional anti-deflection device for drilling tool
09/19/2012CN202441257U Large-inclination angle guide mechanism of tunnel drilling machine
09/19/2012CN202441256U Motion interlock system for horizontal orientation drilling rig
09/19/2012CN202441255U Ultra-low-height hydraulic power head type rotary drilling machine
09/19/2012CN202441254U Deep frozen soil grouting and drilling device for mine
09/19/2012CN102686822A Determining a property of a formation material
09/19/2012CN102686821A Method of drilling and jet drilling system
09/19/2012CN102686820A Air hammer for a boring machine
09/19/2012CN102686440A Rock drilling device
09/19/2012CN102678075A Mudline managed pressure drilling and enhanced influx detection
09/19/2012CN102678048A Multi-stage hydraulic punching drill
09/19/2012CN102678047A Drilling machine and drill arm mechanism thereof
09/19/2012CN102678046A Mining drill carriage
09/19/2012CN102678045A Oil-electricity dual-purpose rotary drilling rig
09/19/2012CN102678044A Well drilling rod and pulse plasma drilling machine system
09/19/2012CN102678043A Method for constructing flow plastic interlayer by adjusting hole drill
09/19/2012CN101915251B Telescopic hydraulic cylinder
09/19/2012CN101586441B High-pressure water jet system and method for drilling and enlarging holes on coal bed
09/18/2012US8267199 Perforating and jet drilling method and apparatus
09/18/2012US8267198 Perforating and jet drilling method and apparatus
09/18/2012US8267197 Apparatus and methods for controlling bottomhole assembly temperature during a pause in drilling boreholes
09/18/2012US8267195 Grave site thawing, softening and boring apparatus for vertical burial containers in frozen ground
09/18/2012US8267193 Valve tester suspension assembly
09/18/2012US8267172 System and method for determining position within a wellbore
09/18/2012CA2638285C Tool face sensor method
09/13/2012WO2012122337A2 Altra-low friction coatings for drill stem assemblies
09/13/2012WO2012122211A1 Magnetostrictive motor for a borehole assembly
09/13/2012WO2012122159A2 Subsea actuation system
09/13/2012WO2012121707A1 Method and system of drilling laterals in shale formations
09/13/2012WO2012120403A1 Mechanical force generator for a downhole excitation apparatus
09/13/2012US20120228033 Method and apparatus for forming a borehole
09/13/2012US20120228032 Expandable window milling bit and methods of milling a window in casing
09/13/2012US20120228031 Ram boring device
09/13/2012US20120228030 Subsea Solids Processing Apparatuses and Methods
09/13/2012US20120228028 Apparatus And Method For Damping Vibration In A Drill String
09/13/2012CA2828717A1 Method and system of drilling laterals in shale formations
09/13/2012CA2828675A1 Mechanical force generator for a downhole excitation apparatus
09/12/2012EP2497896A1 Tool, facility and method for making horizontal boreholes
09/12/2012EP2497895A1 Methods of off-center drilling
09/12/2012EP2496790A2 Drive mechanism
09/12/2012EP2496786A2 Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor
09/12/2012CN202431190U Pile driving device capable of drilling rugged topography
09/12/2012CN202431189U Variable-diameter guiding device for drilling holes
09/12/2012CN202431188U Vehicle-mounted drilling machine for oilfield or coal bed gas exploitation
09/12/2012CN202431187U Vehicle-mounted drilling machine for oilfield or coal bed gas exploitation
09/12/2012CN202431186U Drilling machine and drill arm mechanism thereof
09/12/2012CN202431185U Mining hydraulic multilayer construction drilling deep-hole drilling machine
09/12/2012CN202431184U Split self-propelled coal mine tunnel drill rig
09/12/2012CN202431183U Anchor rod drilling machine
09/12/2012CN202430716U Automatic revolution mechanism of walking type pile driving machine
09/12/2012CN202430710U Five-axis concrete mixing pile device
09/12/2012CN202429249U Coal bed gas drilling machine chassis frame
09/12/2012CN102667048A Drilling a borehole and hybrid drill string
09/12/2012CN102667047A Method of drilling and jet drilling system
09/12/2012CN102661122A Coaxial and automatic water feeder for water drill
09/11/2012US8261856 Methods and systems for drilling boreholes
09/11/2012US8261855 Methods and systems for drilling boreholes
09/11/2012US8261837 Adjustable hanger for inner production riser
09/11/2012CA2650152C Flow operated orienter
09/11/2012CA2616946C An energy transfer assembly
09/11/2012CA2550821C System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
09/07/2012WO2012119092A2 Synthetic formation evaluation logs based on drilling vibrations
09/07/2012WO2012118992A2 High performance wellbore departure and drilling system
09/07/2012WO2012118807A2 Lateral well drilling apparatus and method
09/07/2012WO2012082779A3 Method, system and apparatus for deployment of umbilicals in subsea well operations
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