Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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10/23/2013 | CN102287137B Self-excitation sympathetic vibration well drilling device and method thereof |
10/23/2013 | CN101600847B Dual-direction ram-type blowout preventer seal |
10/22/2013 | US8563480 Subterranean bridging agents |
10/22/2013 | US8561724 Expanding mill having camming sleeve for extending cutting blade |
10/22/2013 | US8561722 Methods of controllably milling a window in a cased wellbore using a pressure differential to cause movement of a mill |
10/22/2013 | US8561720 Methods and systems for drilling |
10/22/2013 | US8561718 System and method for the thermal conditioning of a fluid more particularly a drilling mud |
10/22/2013 | US8561714 Hand-held power tool |
10/22/2013 | US8561706 Riser pipe with rigid auxiliary lines and offset connectors |
10/22/2013 | US8561705 Lead impression wear bushing |
10/22/2013 | CA2576897C Sleeve arrangement |
10/22/2013 | CA2576893C Housing arrangement |
10/17/2013 | WO2013155176A2 Drop away funnel for modular drilling templates |
10/17/2013 | WO2013155061A1 Triggered heating of wellbore fluids by carbon nanomaterials |
10/17/2013 | WO2013155059A2 System and method for forming a lateral wellbore |
10/17/2013 | WO2013154617A2 Modular stress joint and methods for compensating for forces applied to a subsea riser |
10/17/2013 | US20130270009 Method and system of drilling laterals in shale formations |
10/17/2013 | US20130270005 Methods and systems for drilling |
10/17/2013 | US20130270004 Boring ram |
10/17/2013 | US20130269946 Modular stress joint and methods for compensating for forces applied to a subsea riser |
10/16/2013 | EP2649265A2 Resonance enhanced rotary drilling module |
10/16/2013 | EP2394015B1 Equipment for realisation of deep boreholes and method of realisation of deep boreholes |
10/16/2013 | CN203239255U Hydraulic pushing device |
10/16/2013 | CN203239238U Drum-type moving device of mine hydraulic underground drill rig |
10/16/2013 | CN203239232U Crawler-type drilling machine |
10/16/2013 | CN203239231U Movable well head device under tail portion power head of automotive drilling machine |
10/16/2013 | CN203239230U Downhole jet flow auxiliary drilling speed increasing device |
10/16/2013 | CN103352687A Method controlling hole deviation in hole drilling |
10/16/2013 | CN103352656A Drilling system |
10/16/2013 | CN103352655A Hollow drill rod drilling machine unit for surface drilling |
10/16/2013 | CN101696628B Steering bias tool and steering bias method |
10/15/2013 | US8556002 Steering component, steering assembly and method of steering a drill bit in a borehole |
10/15/2013 | US8555978 Dual pathway riser and its use for production of petroleum products in multi-phase fluid pipelines |
10/11/2013 | CA2773632A1 Apparatuses and methods for cooling position sensor components while drilling gravity drainage wells in hot formations |
10/10/2013 | WO2013152219A1 Rotating and reciprocating swivel apparatus and method |
10/10/2013 | WO2013151477A1 Apparatus for drilling and lining a borehole |
10/10/2013 | WO2013149283A1 A roof bolter |
10/10/2013 | WO2012158575A3 Vortex controlled variable flow resistance device and related tools and methods |
10/10/2013 | WO2012158144A8 Apparatus and method for drilling a well |
10/10/2013 | US20130264121 Graphene-based material for shale stabilization and method of use |
10/10/2013 | US20130264120 System and Method for Forming a Lateral Wellbore |
10/10/2013 | US20130264117 Drop away funnel for modular drilling templates |
10/10/2013 | DE102012006770A1 Compression device for introducing pipe strings in soil, has abutment portions supported on roller carriage, which are provided for receiving the driving force equivalent to the driving shaft |
10/09/2013 | EP2646644A2 Bottom preventer for use in a drilling system |
10/09/2013 | EP2646640A2 Method and device for drilling a pit or passage, and flexible tube therefor |
10/09/2013 | EP2646639A2 Vibration transmission and isolation |
10/09/2013 | EP2646638A1 Method for controlling drilling unit of rock drilling rig, and rock drilling rig |
10/09/2013 | CN203230641U High-emission open-type hydraulic system of non-excavation horizontal directional drilling machine |
10/09/2013 | CN203230341U Single-axis stable platform device for rotary-steering drilling tool |
10/09/2013 | CN203230340U Drilling well guider |
10/09/2013 | CN203230339U Table type drilling machine for highways |
10/09/2013 | CN103348090A Centraliser |
10/09/2013 | CN103348085A Vibration transmission and isolation |
10/09/2013 | CN103343665A Method for reducing exterior angle deviation measuring errors of directional drilling assembly and drilling tool |
10/08/2013 | US8550186 Rotary steerable tool employing a timed connection |
10/08/2013 | US8550185 Stochastic bit noise |
10/08/2013 | US8550183 Drilling method |
10/08/2013 | US8550182 Electromagnetic energy assisted drilling system and method |
10/08/2013 | US8550171 Flexible hang-off arrangement for a catenary riser |
10/08/2013 | US8550168 Stabplate connections |
10/08/2013 | US8550167 Remote operated vehicle interface with overtorque protection |
10/08/2013 | CA2712580C Method and system of monitoring rotational time of rotatable equipment |
10/08/2013 | CA2581701C Pulsed electric rock drilling, fracturing, and crushing methods and apparatus |
10/03/2013 | WO2013148521A1 Hammer drill |
10/03/2013 | WO2013148026A1 Igniter and method of making |
10/03/2013 | US20130256030 Method and device for establishing a borehole in the seabed |
10/03/2013 | US20130255956 Seal Sub System |
10/02/2013 | CN203223187U Riser shoe with elliptic conical teeth |
10/02/2013 | CN203223175U Concrete body opening bottom reamer |
10/02/2013 | CN203223174U 可移动式智能钻岩机 Removable smart rock drilling machine |
10/02/2013 | CN203223173U Adjustable rotary-drilling electric power recovery truck |
10/02/2013 | CN203223172U Highway drilling machine |
10/02/2013 | CN203223171U Simple highway drilling machine |
10/02/2013 | CN203223170U Percussion drill hammerhead applied to drilling for pile foundation under inclined rock geological condition |
10/02/2013 | CN103334699A Coal mine underground coal bed drilling and cave-building device and method of use |
10/02/2013 | CN103334698A Transmission device for roadway drilling device |
10/02/2013 | CN103334697A Rotary guide device of drilling tool and drilling tool |
10/02/2013 | CN103334696A Full-hydraulic crawler pump truck for coal mine underground directional drilling |
10/02/2013 | CN103334695A Rotary excavation combined pneumatic down-the-hole hammer drilling pore forming method and device |
10/02/2013 | CN103334467A Power-type engineering operation platform based on excavator |
10/02/2013 | CN101871319B Double-caterpillar drilling machine used in coal mines |
10/02/2013 | CN101755102B Constant-mode auto-drill with pressure derivative control |
10/02/2013 | CN101473102B Device for steering drilling tools |
10/01/2013 | US8544550 Subsea wellhead with segmented fatigue reduction sleeve |
10/01/2013 | CA2780351C Flow operated orienter |
10/01/2013 | CA2735901C Deep sea mining riser and lift system |
10/01/2013 | CA2639343C Method and system for governing block speed |
10/01/2013 | CA2621544C Method for determining block properties of a service rig by evaluating rig data |
09/26/2013 | WO2013142242A1 Methods and systems for downhole thermal energy for vertical wellbores |
09/26/2013 | US20130248252 Reaming Shoe for Increased Borehole Clearance |
09/26/2013 | US20130248251 Mathematical Modeling of Shale Swelling in Water Based Muds |
09/25/2013 | EP2640932A2 Open-hole logging instrument and method for making ultra-deep magnetic and resistivity measurements |
09/25/2013 | EP2640922A1 Method, system and rock drilling apparatus for installing a pipe in drilled holes in rock drilling |
09/25/2013 | CN203214042U Automatic decelerating operation protection system for horizontal directional drilling machine power heads |
09/25/2013 | CN203213960U Power head with limiting structure |
09/25/2013 | CN203213959U Pneumatic slipping following-up type drilling rod centering device |
09/25/2013 | CN203213958U Drilling boom of drill loader |
09/25/2013 | CN203213957U Vehicle-mounted drilling rig for geological exploration |
09/25/2013 | CN203213956U Drill boom for integrated drilling machine |
09/25/2013 | CN203213955U Arch center pipe shed drilling rig |