| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/23/2013 | CN102888837A Method for constructing end-bearing pile on consequent bedding rock slope |
| 01/23/2013 | CN102155162B Floating chassis foldable boom type hydraulic drill carriage |
| 01/23/2013 | CN102146770B Drill boom beam structure of propelling beam capable of rotating by 360 degrees |
| 01/23/2013 | CN102071955B Soft outburst coal seam tunneling reserved coal body reinforcement and outburst-proof method |
| 01/23/2013 | CN101824964B Downhole drill of intelligent underground multi-branch horizontal drilling completion system |
| 01/23/2013 | CN101775959B Drilling machine of coaxial double-drill large-caliber multifunctional foundation pile |
| 01/22/2013 | US8356677 Methods of preloading a sonic drill head and methods of drilling using the same |
| 01/22/2013 | US8356672 Riser joint coupling |
| 01/22/2013 | CA2724565C Cutting windows for lateral wellbore drilling |
| 01/17/2013 | WO2013009285A1 Rotary steerable drilling system and method |
| 01/17/2013 | WO2013007879A1 Method and arrangement for calibrating sensors in drilling equipment |
| 01/17/2013 | WO2012158026A3 Pipe guiding device, pipe pusher, roller bock and method for laying a pipe in a subsurface |
| 01/17/2013 | US20130014991 Drilling system and method of operating a drilling system |
| 01/17/2013 | CA2841662A1 An improved directional drilling tool |
| 01/16/2013 | CN202673290U Double-cantilever hard rock coal roadway tunneling anchor device |
| 01/16/2013 | CN202673146U Expanding type ball-throwing structure for reamer while drilling |
| 01/16/2013 | CN202673145U Guide apparatus used in rotary drilling |
| 01/16/2013 | CN202673144U South pole ultralow temperature bedrock drilling equipment |
| 01/16/2013 | CN202673143U All-directional hydraulic anchor rod drill rig for coal mines |
| 01/16/2013 | CN202673142U Coal-mine omnibearing deep-hole drilling carriage |
| 01/16/2013 | CN202673141U Mount type integrated hydraulic rock driller |
| 01/16/2013 | CN202673140U Pulse plasma drilling machine system |
| 01/16/2013 | CN102884487A An apparatus and a control method for controlling the apparatus |
| 01/16/2013 | CN102877829A Correcting mechanism for perpendicularity and section of pile hole and construction method for correcting mechanism |
| 01/16/2013 | CN102877788A Outburst prevention track drilling machine for laneway excavation |
| 01/16/2013 | CN102877787A Engineering machine and detachable portable pedal plate thereof |
| 01/16/2013 | CN102147033B Non-excavation directional traversing construction method for thermal power pipeline |
| 01/16/2013 | CN101934991B Lifting mechanism and rotary drilling rig |
| 01/16/2013 | CN101824965B Hydraulic pulse cavitating jet generation device |
| 01/15/2013 | US8355623 Temperature limited heaters with high power factors |
| 01/15/2013 | US8353368 Resonance enhanced drilling: method and apparatus |
| 01/15/2013 | US8353367 Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring perforating, assisting annular flow, and associated methods |
| 01/15/2013 | US8353366 Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods |
| 01/15/2013 | US8353365 Boring tool control using remote locator |
| 01/15/2013 | CA2695443C Directional drilling control using modulated bit rotation |
| 01/15/2013 | CA2684426C Method of modifying drilling pattern, rock drilling rig, and software product |
| 01/15/2013 | CA2505556C Steerable drill bit arrangement |
| 01/15/2013 | CA2502165C Bottom hole assembly |
| 01/10/2013 | WO2013004956A1 Drilling mast having a double drawing capacity |
| 01/10/2013 | WO2013004610A1 Method and system of radially expanding a tubular element in a wellbore |
| 01/10/2013 | WO2012138904A3 System and method for coupling a drill bit to a whipstock |
| 01/10/2013 | WO2012138126A3 Rod mounting device for drilling machine |
| 01/10/2013 | US20130011202 Tideway positioning system |
| 01/10/2013 | US20130008718 Control system and interface for a tunneling apparatus |
| 01/10/2013 | US20130008716 Rock Drilling Rig and Method for Positioning the Same |
| 01/10/2013 | US20130008715 Double Valve Block and Actuator Assembly Including Same |
| 01/10/2013 | US20130008664 Above mudline whipstock for marine platform drilling operations |
| 01/09/2013 | CN202659146U Double-drilling combined drill structure suitable for drilling operation of oil well and horizontal well |
| 01/09/2013 | CN202659145U Multipurpose motor-driven variable-frequency drilling machine |
| 01/09/2013 | CN202659144U Movable drilling machine |
| 01/09/2013 | CN202659143U Hole-digging and rod-erecting all-in-one machine |
| 01/09/2013 | CN202659142U Integrated joint of water slagging system |
| 01/09/2013 | CN202659141U Dismountable all-hydraulic core drilling machine structure |
| 01/09/2013 | CN102865041A Rock penetrating reaming device |
| 01/09/2013 | CN102865040A Sleeve buoyancy weight reduction system |
| 01/09/2013 | CN102865039A Structure bending corner locking mechanism for rotating guide drilling tool |
| 01/09/2013 | CN102865038A Offset guide mechanism design method of dynamic directional type rotary steering well drilling tool |
| 01/09/2013 | CN102864786A Hole deviation control method for drilling in deep hole curtain grouting |
| 01/09/2013 | CN102168529B Bolt-driven double-cone locking piece type riser connector |
| 01/09/2013 | CN102071874B Drilling method suitable for gravel area |
| 01/09/2013 | CN101994505B Drilling construction method by cooperation of horizontal wells and extraction straight wells for coal bed methane in multiple objective layers |
| 01/09/2013 | CN101886521B Pneumatic reverse circulating drilling tool for fixing holes |
| 01/09/2013 | CN101852069B Supporting rotating control head of underbalanced coal bed methane well drilling |
| 01/08/2013 | US8347987 Apparatus and method for installing ground anchoring systems |
| 01/08/2013 | US8347984 Variable force/variable frequency sonic drill head |
| 01/08/2013 | US8347983 Drilling with a high pressure rotating control device |
| 01/08/2013 | CA2693839C Downhole applications of composites having aligned nanotubes for heat transport |
| 01/08/2013 | CA2687405C Arrangement for employing drill steel centralizer travelling on feed beam of rock drill machine |
| 01/08/2013 | CA2661725C Method and system for accessing subterranean deposits from the surface |
| 01/08/2013 | CA2635503C Mobile self-erecting directional drilling rig apparatus |
| 01/08/2013 | CA2467381C Mono diameter wellbore casing |
| 01/03/2013 | WO2013002782A1 System and method for automatic weight-on-bit sensor calibration |
| 01/03/2013 | WO2013001139A1 Positioning method for a drilling head |
| 01/03/2013 | WO2013000764A2 A fluid diverter system for a drilling facility. |
| 01/03/2013 | WO2012094164A3 Method and apparatus for multi-drop tool control |
| 01/03/2013 | WO2011120692A3 Method for producing a horizontally drilled bore hole in the ground and horizontal drilling device |
| 01/03/2013 | US20130000988 Drilling unit |
| 01/03/2013 | US20130000987 Steerable ground piercing tools |
| 01/03/2013 | US20130000984 Adjustable rotary steerable system |
| 01/03/2013 | US20130000982 Erosion Resistant Hard Composite Materials |
| 01/03/2013 | US20130000981 Control of downhole safety devices |
| 01/03/2013 | CA2840298A1 Positioning method for a drilling head |
| 01/03/2013 | CA2839620A1 A fluid diverter system for a drilling facility |
| 01/02/2013 | EP2540954A1 Drilling device |
| 01/02/2013 | EP2540402A2 Method and apparatus for prepping surfaces with a high-frequency forced pulsed waterjet |
| 01/02/2013 | EP2540401A2 Method and apparatus for prepping surfaces with a high-frequency forced pulsed waterjet |
| 01/02/2013 | EP2539658A2 Cleaning apparatus and method for a material dryer |
| 01/02/2013 | EP2539539A1 Method of presenting positioning information, user interface, and rock drilling rig |
| 01/02/2013 | EP2539531A2 Method and device for direction-controlled drilling |
| 01/02/2013 | EP2539530A1 Rock drilling rig, method for rock drilling, and control system of rock drilling rig |
| 01/02/2013 | CN202645530U Anti-tipping system of rotary drilling rig and rotary drilling rig |
| 01/02/2013 | CN202645430U Vibration punching device |
| 01/02/2013 | CN202645429U Self-increasing flow device of downhole hydraulic piston for oil and natural gas drilled wells |
| 01/02/2013 | CN202645428U Deflecting device for horizontal drilling |
| 01/02/2013 | CN202645427U Preferential action hydraulic system for horizontal directional drilling machine |
| 01/02/2013 | CN202645426U Push-and-pull hydraulic system for horizontal directional drilling machine |
| 01/02/2013 | CN202645425U Drilling machine |
| 01/02/2013 | CN202645424U Quick drilling machine |
| 01/02/2013 | CN202641260U Rotary drilling rig chassis traveling mechanism front idler assembly |
| 01/02/2013 | CN102852547A Drilling and cutting integrated outburst preventing and permeability improving system for mines |