| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 01/02/2013 | CN102852460A Downhole deflecting device for drilling ice layer of polar region and downhole deflecting method |
| 01/02/2013 | CN102852459A Automatic vertical drilling tool on basis of eccentric divided gas dynamics |
| 01/02/2013 | CN102852458A 钻孔单元 Drilling unit |
| 01/02/2013 | CN102061883B Eccentric wheel clamp and method for running casing in drill hole of mine |
| 01/02/2013 | CN101985888B Method for draining gas of highly gassy coal mine |
| 01/02/2013 | CN101713279B Deviation prevention and fast drilling technology of eccentric drilling tool assembly |
| 01/02/2013 | CN101655000B Full-hydraulic top-drive truck-mounted drilling rig |
| 01/01/2013 | US8342266 Timed steering nozzle on a downhole drill bit |
| 01/01/2013 | US8342265 Shot blocking using drilling mud |
| 01/01/2013 | US8342263 Vibratory drill head mounting and rotation coupling system |
| 01/01/2013 | US8342262 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 01/01/2013 | US8342249 Offshore drilling system |
| 12/27/2012 | WO2012178020A1 Robotic tunneling system |
| 12/27/2012 | WO2012177781A2 Adjustable bent drilling tool having in situ drilling direction change capability |
| 12/27/2012 | WO2012177275A1 Powered and manual auger and method of drilling a hole using the auger |
| 12/27/2012 | WO2012174608A1 Mobile support system for a raise-boring rig |
| 12/27/2012 | WO2012148782A3 Offshore fluid transfer systems and methods |
| 12/27/2012 | WO2012145160A3 Galvanically isolated exit joint for well junction |
| 12/27/2012 | US20120325558 Rock Drill Bit, a Drilling Assembly and a Method for Percussive Rock Drilling |
| 12/27/2012 | US20120325557 Water/slurry containment device |
| 12/27/2012 | US20120325556 Computer-Based Method for Real-Time Three-Dimensional Geological Model Calculation and Reservoir Navigation |
| 12/27/2012 | US20120325492 Drilling Composition, Process for its Preparation, and Applications Thereof |
| 12/27/2012 | CA2838278A1 Adjustable bent drilling tool having in situ drilling direction change capability |
| 12/26/2012 | CN202628651U Speed switching safety device for motor of drilling machine |
| 12/26/2012 | CN202627968U Diameter variable reaming while drilling device |
| 12/26/2012 | CN202627967U Multistage hydraulic punching drill |
| 12/26/2012 | CN202627966U Release device for window of coiled tube |
| 12/26/2012 | CN202627965U Track type automatic drill jumbo |
| 12/26/2012 | CN202627964U Multi-function full-automatic paying-off, pole-erecting, and hole-digging all-in-one machine |
| 12/26/2012 | CN202627963U Movable guide rail device for rock drill |
| 12/26/2012 | CN202627962U Drilling and digging interchange dual-purpose machine |
| 12/26/2012 | CN202627958U Locked type hole digging pile machine |
| 12/26/2012 | CN102844519A Jacking units and bellows for down hole intervention tools |
| 12/26/2012 | CN102839918A Ice directional drilling hot-melt drill |
| 12/26/2012 | CN102839917A Rotary hot-melting drill bit |
| 12/26/2012 | CN102839916A Method for drilling high-gas tunnel geological forecast prospect hole by using impact type drilling machine |
| 12/26/2012 | CN102220841B Submarine sampling drilling rig |
| 12/26/2012 | CN102116136B Reverse circulation drill and gripper for same |
| 12/26/2012 | CN102108836B Punch die |
| 12/26/2012 | CN102031929B PLC (Programmable Logic Controller) controlled variable-frequency piling machine |
| 12/26/2012 | CN101892806B Method and device for rock-breaking and well-drilling by high temperature and high pressure air jet |
| 12/25/2012 | US8336643 Vibratory drilling apparatus |
| 12/20/2012 | WO2012174295A2 Control system for downhole operations |
| 12/20/2012 | WO2012173395A2 Drilling system having slot for underwater storage of bop assembly |
| 12/20/2012 | WO2012172181A1 Method and arrangement for preparing a charging plan |
| 12/20/2012 | WO2012172180A1 Method and arrangement for designing drilling plan |
| 12/20/2012 | WO2012112926A8 Method and apparatus for strengthening a wellbore |
| 12/20/2012 | WO2011120697A3 Horizontal drilling device |
| 12/20/2012 | WO2011120696A3 Method for operating a horizontal drilling device and horizontal drilling device |
| 12/20/2012 | US20120318582 Multilateral system with rapidtrip intervention sleeve and technique for use in a well |
| 12/20/2012 | US20120318580 Earth-boring tools including retractable pads, cartridges including retractable pads for such tools, and related methods |
| 12/20/2012 | US20120318578 Method of and system for drilling information management and resource planning |
| 12/20/2012 | US20120318577 Powered and manual auger |
| 12/20/2012 | US20120318519 Apparatus and method for connecting fluid lines |
| 12/20/2012 | CA2837905A1 Method and arrangement for preparing a charging plan |
| 12/20/2012 | CA2837902A1 Method and arrangement for designing drilling plan |
| 12/19/2012 | EP2535502A1 Systems and methods for improved positioning of pads |
| 12/19/2012 | CN202611695U Novel rectangular coal roadway quick driving and bolting all-in-one machine |
| 12/19/2012 | CN202611592U Broaching drilling tool and rotary drilling machine thereof |
| 12/19/2012 | CN202611591U Three-dimensional waterpower vibrator for petroleum drilling |
| 12/19/2012 | CN202611590U Hydro-jet radial drilling wellhead azimuth angle adjustment special tool |
| 12/19/2012 | CN202611589U Crawler-type belt-crossing wide-angle coal rock drilling device |
| 12/19/2012 | CN202611588U Crawler-type omnibearing hydraulic roofbolter |
| 12/19/2012 | CN102834289A Rock drilling rig and method for positioning the same |
| 12/19/2012 | CN102828692A Pneumatic drilling method for casing pipe type spiral drilling machine |
| 12/19/2012 | CN102828691A Packed hole deviation control and near-drill-bit decompression compound way-type drilling unit |
| 12/19/2012 | CN102828690A Walking dual-swing downhole drill |
| 12/19/2012 | CN102086766B Drilling machine tool special for opencast mining rotary drill rig and using method thereof |
| 12/19/2012 | CN102032225B Hydraulic system of continuous oil pipe radial drilling equipment |
| 12/19/2012 | CN101886520B Oilfield underground high-pressure fluid-driven spinning horizontal perforating device and application thereof |
| 12/19/2012 | CN101696620B Drilling system of semi-submersible type drilling platform |
| 12/19/2012 | CN101260783B Prebending kinetics deviation control and fast drilling method |
| 12/18/2012 | US8333254 Steering mechanism with a ring disposed about an outer diameter of a drill bit and method for drilling |
| 12/18/2012 | CA2689578C Rotary steerable drilling system |
| 12/18/2012 | CA2674120C Method and device for laying pipelines in the ground |
| 12/18/2012 | CA2612983C Arrangement for positioning rock drilling rig on drilling site |
| 12/18/2012 | CA2576756C Method and device for excavating submerged stratum |
| 12/18/2012 | CA2576138C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 12/14/2012 | DE212010000211U1 Steuersystem und Schnittstelle für eine Tunnelvorrichtung Control system and interface for a tunnel device |
| 12/13/2012 | WO2012170030A1 Method and apparatus for shaping a well hole |
| 12/13/2012 | WO2012088115A3 Method and apparatus for drilling a zero-radius lateral |
| 12/13/2012 | US20120312599 Cutting elements comprising sensors, earth-boring tools having such sensors, and associated methods |
| 12/13/2012 | US20120312537 System and Method For Enhancing The Production of Hydrocarbons |
| 12/13/2012 | CA2838803A1 Method and apparatus for shaping a well hole |
| 12/12/2012 | EP2532826A1 Construction device and method for aligning a mast |
| 12/12/2012 | EP2532790A1 Method for producing an underwater foundation element, adjustment head for an underwater foundation element and underwater working assembly |
| 12/12/2012 | CN202597302U Hydraulic system and long spiral drilling machine with hydraulic system |
| 12/12/2012 | CN202597299U Hydraulic control system for super-deep radial well operation |
| 12/12/2012 | CN202597298U Hydraulic oil pipe control system for radially drilling by employing injection head |
| 12/12/2012 | CN202597297U Hydraulic control system used for radial well operation |
| 12/12/2012 | CN202596607U Operating device of drilling wellhead fork and vehicular drilling machine |
| 12/12/2012 | CN202596580U Novel pulse generator device |
| 12/12/2012 | CN202596579U Device reducing annular confining pressure at bottom of well and improving rock breaking efficiency of horizontal well |
| 12/12/2012 | CN202596578U Horizontal orientation drilling system |
| 12/12/2012 | CN202596577U Radial horizontal well orienting device |
| 12/12/2012 | CN202596576U Vehicular full hydraulic core drilling machine structure |
| 12/12/2012 | CN202596575U Automatic retractable-type working platform for vehicle-mounted under-pressure operation workover rig |
| 12/12/2012 | CN202596574U Novel amplitude variable big triangle mechanism of rotary drilling rig |
| 12/12/2012 | CN202596573U Novel square box structure |
| 12/12/2012 | CN202596572U Well drilling rod and pulse plasma drilling machine system |