| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 07/25/2013 | US20130186686 Method and Apparatus for Vibrating Horizontal Drill String to Improve Weight Transfer |
| 07/25/2013 | US20130186685 High definition drilling rate of penetration for marine drilling |
| 07/25/2013 | DE102012000983A1 Vorrichtung für ein Drainage-Bohr-System Device for a drainage drilling system |
| 07/24/2013 | EP2616638A2 Apparatus and methods for drilling wellbores by ranging existing boreholes using induction devices |
| 07/24/2013 | EP2616637A2 Reservoir navigation using magnetic field of dc currents |
| 07/24/2013 | EP2616626A1 Multi-operational multi-drilling system |
| 07/24/2013 | CN203081296U Hydraulic jetting multi-nozzle radial drilling device |
| 07/24/2013 | CN203081295U Downhole laser auxiliary rock-breaking drilling rig |
| 07/24/2013 | CN203081294U Drilling tool of trenchless rig for guided construction in silty soil layer |
| 07/24/2013 | CN203081293U Novel geomagnetic direction control system with data display |
| 07/24/2013 | CN203081292U High-power remote wired direction control system |
| 07/24/2013 | CN203081291U Drilling angle adjusting device of down-the-hole drill |
| 07/24/2013 | CN203081290U Radial well casing pipe drilling device |
| 07/24/2013 | CN203081289U Novel underground drill rig directly driven by permanent magnet synchronous motor |
| 07/24/2013 | CN203081288U Drilling device |
| 07/24/2013 | CN203081287U Guardrail and pedal device of vehicle-mounted workover rig |
| 07/24/2013 | CN203081286U Anti-hole-collapse drilling tool |
| 07/24/2013 | CN203081285U Downhole laser auxiliary rock-breaking testing device |
| 07/24/2013 | CN203081284U Intelligent hydraulic integrated open-air down-the-hole drill |
| 07/24/2013 | CN203081282U Water well drilling rig |
| 07/24/2013 | CN103221627A Excavation system using a water jet, and excavation method using the same |
| 07/24/2013 | CN103221626A Downhole rotary drilling apparatus with formation-interfacing members and control system |
| 07/24/2013 | CN103216259A System protecting underground coal bed hole drilling from collapse |
| 07/24/2013 | CN103216234A Horizontal branch multi-well-group butted well and construction method thereof |
| 07/24/2013 | CN103216195A Dual-purpose device for drilling and cleaning well |
| 07/24/2013 | CN103216194A Omnibearing multi-angle rotating-type anchor rod drill wagon |
| 07/24/2013 | CN103216193A Rectangular hole well drill |
| 07/24/2013 | CN101804946B Vehicle |
| 07/23/2013 | CA2696917C Drill in sand control liner |
| 07/23/2013 | CA2685021C Seal for a drill string |
| 07/23/2013 | CA2575711C A drill rig and a method for controlling a fan therein |
| 07/19/2013 | CA2764816A1 Method and apparatus for creating a pressure pulse in drilling fluid to vibrate a drill string |
| 07/18/2013 | WO2013104069A1 Fluid or slurry pulsing casing/liner shoe |
| 07/18/2013 | WO2012041996A3 Rotating control device |
| 07/17/2013 | EP2615239A1 Device and method for drilling shafts in a ground consisting of rock, clay and/or related materials |
| 07/17/2013 | EP2614210A2 Offshore thermal treatment of drill cuttings fed from a bulk transfer system |
| 07/17/2013 | EP2614209A1 Downhole rotary drilling apparatus with formation-interfacing members and control system |
| 07/17/2013 | CN203069171U Rotation angle measurement device and engineering?machinery |
| 07/17/2013 | CN203067376U Hydraulic system of pipe rolling device and rotary drilling machine |
| 07/17/2013 | CN203066863U Mechanical arm of raise boring machine clamping drilling stem |
| 07/17/2013 | CN203066862U Rotary drilling rig provided with oil-electric dual system and drilling rod for transport |
| 07/17/2013 | CN203066861U Three-arm drill jumbo drill arm combined support |
| 07/17/2013 | CN203066860U Vehicle-mounted water well drilling rig operation room |
| 07/17/2013 | CN203066859U Feeding mechanism of raise boring machine power head |
| 07/17/2013 | CN203066858U Multifunctional front-digging and back-hanging type earth boring machine |
| 07/17/2013 | CN203066857U Drilling tool for clay layer drilling and coring |
| 07/17/2013 | CN103210181A Formation sensing and evaluation drill |
| 07/17/2013 | CN103210176A Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods |
| 07/17/2013 | CN103210169A Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools |
| 07/17/2013 | CN103210168A Combination whipstock and completion deflector |
| 07/17/2013 | CN103206174A Driving riser shoe with elliptical conical teeth |
| 07/17/2013 | CN103206170A Concrete body hole bottom reamer |
| 07/17/2013 | CN102352725B Drilling jet type coal seam cutting system |
| 07/17/2013 | CN102296957B Method of transfixing and distressing with one explosion during tunneling of seam roadway with rock burst |
| 07/17/2013 | CN102251781B Guiding horizontal jet grouting pile pre-support construction method for scattered particle rock surrounding tunnel |
| 07/17/2013 | CN101965436B Shaker deck adjustment apparatus |
| 07/17/2013 | CN101553639B Dual subsea production chokes for high pressure well production |
| 07/17/2013 | CN101107417B Vibration apparatus |
| 07/17/2013 | CN101044293B Modular drill system requiring limited field assembly |
| 07/16/2013 | US8485282 Earth-boring tools having expandable cutting structures and methods of using such earth-boring tools |
| 07/16/2013 | US8485281 Equipment for drilling secant holes |
| 07/16/2013 | US8485279 Impactor excavation system having a drill bit discharging in a cross-over pattern |
| 07/16/2013 | CA2724796C Diverting tool |
| 07/16/2013 | CA2723610C Method for determining dead zone of valve |
| 07/16/2013 | CA2589046C Vibrational apparatus |
| 07/11/2013 | WO2013103907A1 Pressure activated flow switch for a downhole tool |
| 07/11/2013 | WO2013103706A1 Directional drilling target steering apparatus and method |
| 07/11/2013 | WO2013103679A1 Pressure tolerant battery |
| 07/11/2013 | WO2013103677A1 In-riser hydraulic power recharging |
| 07/11/2013 | WO2013067263A3 Method and system for an automatic milling operation |
| 07/11/2013 | US20130175093 Apparatus and Methods Utilizing Progressive Cavity Motors and Pumps with Independent Stages |
| 07/11/2013 | US20130175092 Directional drilling target steering apparatus and method |
| 07/11/2013 | US20130175090 Method and apparatus for delivering high power laser energy over long distances |
| 07/11/2013 | US20130175046 Nanoparticle Kinetic Gas Hydrate Inhibitors |
| 07/11/2013 | CA2764302A1 Fluid or slurry pulsing casing/liner shoe |
| 07/11/2013 | CA2764210A1 Cord (controled remote drilling) |
| 07/10/2013 | EP2611970A1 Method for introducing a hollow elongated structure into a water bottom |
| 07/10/2013 | EP2611579A1 Hydraulic impact mechanism for use in equipment for treating rock and concrete |
| 07/10/2013 | CN203050692U Drill loader |
| 07/10/2013 | CN203050525U Rotary grout-jetting nozzle with forced grout-returning function |
| 07/10/2013 | CN203050510U Signal hitting-prevention wall hole punching fixing support |
| 07/10/2013 | CN203050509U High-pressure shunt used for drill stem |
| 07/10/2013 | CN203050508U Underground hydraulic punching device |
| 07/10/2013 | CN203050507U Repeat-entering whipstock for multilateral well |
| 07/10/2013 | CN203050506U Tubular column steering device |
| 07/10/2013 | CN203050505U Guide drilling device with multiple groups of pre-buried sensors adopted |
| 07/10/2013 | CN203050504U Crawler-type full hydraulic directional drilling machine for narrow tunnel |
| 07/10/2013 | CN203050503U Super-deep-hole double-tube directional drilling machine |
| 07/10/2013 | CN203050502U Gas outburst monitoring device of drilling machine |
| 07/10/2013 | CN203050501U Arched frame arch erecting mechanism |
| 07/10/2013 | CN203050500U Thousand-hand combined drilling trolley finger linkage mechanism |
| 07/10/2013 | CN203050485U Ground stabilization grouting hammer mill |
| 07/10/2013 | CN203049583U Multifunctional piler driver with three stand columns |
| 07/10/2013 | CN103201450A Rock drilling rig and method for transmission of rock drilling rig |
| 07/10/2013 | CN103195471A Method for preventing drilling collapse of downhole coal bed |
| 07/10/2013 | CN103195405A System and method of directing-type rotary steering actuator mandrel displacement vector control |
| 07/10/2013 | CN103195365A Rotary drilling rig hard rock stratum step drilling construction process |
| 07/10/2013 | CN103195364A Method and device for reducing well-bottom annulus confining pressure and improving radial horizontal well rock breaking efficiency |
| 07/10/2013 | CN103195363A Negative-pressure jet-type particle impact drilling injection device |
| 07/10/2013 | CN103195362A Integrated window sidetrack drilling tool |