| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 05/30/2013 | US20130133949 Extendable cutting tools for use in a wellbore |
| 05/30/2013 | US20130133948 Use of downhole pressure measurements while drilling to detect and mitigate influxes |
| 05/30/2013 | CA2856365A1 Systems and methods for continuous and near continuous drilling |
| 05/29/2013 | EP2597249A1 Drilling device and method for creating a vertical borehole |
| 05/29/2013 | DE102011087096A1 Drilling tool of construction machine used in pile foundation of building, has drilling heads whose rotation axis is transverse to feed direction and is retained position along feed direction |
| 05/29/2013 | CN202954744U Train type translation leveling device |
| 05/29/2013 | CN202954739U Casing buoyancy weight reduction system |
| 05/29/2013 | CN202954738U Water drilling splash-proof safety cover |
| 05/29/2013 | CN202954737U Drilling machine underground working condition simulating experiment frame |
| 05/29/2013 | CN103124828A Rotary steerable tool actuator tool face control |
| 05/29/2013 | CN102191915B Resonant pulse vibrating drilling device |
| 05/29/2013 | CN101802343B Vertical direction adjustment tool for downhole drilling apparatus |
| 05/29/2013 | CN101597563B Waste landfill gas collection and generation equipment and method for constructing gas collection well |
| 05/28/2013 | US8448721 Directional drilling system |
| 05/28/2013 | US8448709 Method of killing an uncontrolled oil-gas fountain appeared after an explosion of an offshore oil platform |
| 05/28/2013 | CA2731641C Deep water pile driver |
| 05/28/2013 | CA2553236C Downhole drilling of a lateral hole |
| 05/23/2013 | WO2013074765A2 Methods for geosteering a drill bit in real time using surface acoustic signals |
| 05/23/2013 | WO2013074745A2 Methods for geosteering a drill bit in real time using drilling acoustic signals |
| 05/23/2013 | WO2013074091A1 Look-ahead of the bit applications |
| 05/23/2013 | WO2012151303A3 Liner cementation process and system |
| 05/23/2013 | WO2012028949A3 Dual activity drilling ship |
| 05/23/2013 | US20130126242 Methods and apparatus for drilling wells |
| 05/23/2013 | US20130126241 Directional drilling control apparatus and methods |
| 05/23/2013 | US20130126240 Method for salt and cross-bed proximity detection using deep directional electromagnetic measurements while drilling |
| 05/23/2013 | US20130126239 Directional Drilling Attitude Hold Controller |
| 05/23/2013 | US20130126182 Riserless, pollutionless drilling system |
| 05/23/2013 | CA2854666A1 Methods for geosteering a drill bit in real time using drilling acoustic signals |
| 05/23/2013 | CA2854480A1 Methods for geosteering a drill bit in real time using surface acoustic signals |
| 05/23/2013 | CA2854440A1 Look-ahead of the bit applications |
| 05/23/2013 | CA2794355A1 Wedge deflecting device for sidetracking |
| 05/22/2013 | EP2593629A1 Electromagnetic orientation system for deep wells |
| 05/22/2013 | CN202946019U Vibration acceleration tool used for drilling |
| 05/22/2013 | CN202946018U Grinding material jet bit |
| 05/22/2013 | CN202946017U Independent water feeder for water drill |
| 05/22/2013 | CN202946016U Deep-water drilling device |
| 05/22/2013 | CN202946015U Main and auxiliary underwater system for deepwater drilling |
| 05/22/2013 | CN202946014U Directional deflection bit |
| 05/22/2013 | CN202946013U Non-excavation guiding boring machine integrating main engine with autocrane |
| 05/22/2013 | CN202946012U Sleeving spiral drilling machine for pile head processing |
| 05/22/2013 | CN202946011U Track walking deck rotation full hydraulic underground drilling rig |
| 05/22/2013 | CN103119244A Downhole closed-loop geosteering methodology |
| 05/22/2013 | CN103119239A Multi-operational multi-drilling system |
| 05/22/2013 | CN103114810A Coal seam drilling hole-collapse preventing lower sleeve device capable of drilling along with drill and drilling method |
| 05/22/2013 | CN103114809A Vibration absorption type downhole hydraulic pulse generation device and well drilling method thereof |
| 05/22/2013 | CN103114808A Arch centering pipe shed drilling machine |
| 05/22/2013 | CN103114807A Eccentric drilling hole-forming method of down-the-hole drill |
| 05/22/2013 | CN102345441B Self-propelled drilling method and pulsed cavitation swirling jet nozzle |
| 05/22/2013 | CN102287136B Hydraulic jetting drilling-well shower nozzle |
| 05/22/2013 | CN102268963B Basement rock fractured formation mixed drilling well completion process |
| 05/22/2013 | CN102102490B Method for feeding and expanding forked three-way mechanism based on downward orientation |
| 05/22/2013 | CN102080530B Method for constructing horizontal coal bed gas well and vertical drainage and mining well |
| 05/22/2013 | CN101975077B High-outburst coal mine coal roadway drilling-loading-bolting integrated machine |
| 05/22/2013 | CN101158267B Method and system for accessing subterranean deposits from the surface |
| 05/22/2013 | CN101052779B Device for a drilling tool |
| 05/21/2013 | US8443897 Subsea safety system having a protective frangible liner and method of operating same |
| 05/21/2013 | US8443896 Riser floatation with anti-vibration strakes |
| 05/21/2013 | CA2707053C Method and equipment for small-charge blasting |
| 05/16/2013 | WO2013070935A1 Spiral whipstock for low-side casing exits |
| 05/16/2013 | WO2013070084A1 Method and device for riserless drilling fluid recovery |
| 05/16/2013 | WO2013067756A1 Integrated sidetrack drilling tool |
| 05/16/2013 | WO2013015967A4 Whipstock assembly and method for low side exit |
| 05/16/2013 | US20130118812 Rotary Steerable Push-the-Bit Drilling Apparatus with Self-Cleaning Fluid Filter |
| 05/16/2013 | US20130118811 Drilling Apparatus Including Milling Devices Configured to Rotate at Different Speeds |
| 05/16/2013 | US20130118810 Boring tool control using remote locator |
| 05/16/2013 | US20130118807 Methods For Geosteering A Drill Bit In Real Time Using Drilling Acoustic Signals |
| 05/16/2013 | US20130118806 System and Method for Managing Heave Pressure from a Floating Rig |
| 05/16/2013 | CA2876482A1 Managed pressure cementing |
| 05/16/2013 | CA2854841A1 Orienting and supporting a casing of a coaxial geothermal borehole |
| 05/16/2013 | CA2854755A1 Method and device for riserless drilling fluid recovery |
| 05/16/2013 | CA2854185A1 Spiral whipstock for low-side casing exits |
| 05/15/2013 | EP2592224A2 Methods and systems for drilling |
| 05/15/2013 | EP2592223A2 Methods and systems for drilling |
| 05/15/2013 | EP2592222A2 Methods and systems for drilling |
| 05/15/2013 | EP2592215A1 Laser drilling device |
| 05/15/2013 | CN202937187U Coal seam drilling positioning device |
| 05/15/2013 | CN202937186U Automatic vertical well drilling tool part |
| 05/15/2013 | CN103109033A Radial vibrational apparatus |
| 05/15/2013 | CN103104207A Nitrogen well-drilling system in well-drilling field and well-drilling method thereof |
| 05/15/2013 | CN103104205A Nitrogen well-drilling method in well-drilling field |
| 05/15/2013 | CN103104196A Large-diameter engineering well casing running method |
| 05/15/2013 | CN103104195A Deviation rectifying method, device and system of all casing drilling machine |
| 05/15/2013 | CN103104194A Hand-push type drilling machine |
| 05/15/2013 | CN102359347B Machine-locked drilling machine, drilling rod monitoring method, controller and monitoring system thereof |
| 05/15/2013 | CN102022081B Method and device for drilling under condition of complicated stratum |
| 05/15/2013 | CN101652531B Noise-dampening shield structure for rock drilling apparatus |
| 05/15/2013 | CA2758440A1 Top plate alignment template device |
| 05/14/2013 | US8439132 Microtunnelling system and apparatus |
| 05/14/2013 | US8439131 Drill bit assembly and method of performing an operation in a wellbore |
| 05/14/2013 | US8439125 Apparatus, method and system for deep earth grounding |
| 05/14/2013 | CA2707341C Method and apparatus for small-charge blasting |
| 05/10/2013 | WO2013066695A2 Eccentric sleeve for directional drilling systems |
| 05/10/2013 | WO2013066276A2 Method of disintegrating rock by melting and by synergism of water streams |
| 05/10/2013 | WO2013065013A2 Drilling arrangement |
| 05/10/2013 | WO2013064738A1 Mining vehicle |
| 05/10/2013 | WO2013028558A3 All electric powered mobile jumbo drill machine |
| 05/10/2013 | CA2856170A1 Eccentric sleeve for directional drilling systems |
| 05/10/2013 | CA2853973A1 Method and system for an automatic milling operation |
| 05/10/2013 | CA2851171A1 Mining vehicle |
| 05/09/2013 | US20130112484 Eccentric sleeve for directional drilling systems |