| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 09/30/2010 | WO2009085753A8 Steerable drilling system |
| 09/30/2010 | US20100243331 Helical drilling apparatus, systems, and methods |
| 09/30/2010 | US20100243330 Impact Excavation System and Method With Injection System |
| 09/30/2010 | US20100243329 Vacuum feed supply system for drilling fluid additives |
| 09/30/2010 | US20100243328 Continuous geomechanically stable wellbore trajectories |
| 09/30/2010 | US20100243327 Hydraulic control system for drilling systems |
| 09/30/2010 | US20100243326 Common Interface Architecture for Horizontal Directional Drilling Machines and Walk-Over Guidance Systems |
| 09/30/2010 | US20100243242 Method for completing tight oil and gas reservoirs |
| 09/30/2010 | US20100243240 Device and method for feeding particles into a stream |
| 09/30/2010 | CA2755628A1 Helical drilling apparatus, systems, and methods |
| 09/29/2010 | EP2231991A1 Earth-boring tools attachable to a casing string and methods for their manufacture |
| 09/29/2010 | EP2231989A2 Vibratory unit for drilling systems |
| 09/29/2010 | CN201593394U Completion tool hydraulic piston type swirl tube for sidetracking horizontal wells |
| 09/29/2010 | CN201593378U Multifunctional jumbo loader |
| 09/29/2010 | CN201593377U Pressurization mechanism suitable for device reconstructing oil-gas well head under fire existing condition |
| 09/29/2010 | CN1690358B Method and apparatus for reducing pressure in a perforating gun |
| 09/29/2010 | CN101845952A Movable three-arm top-assisting anchor rod and anchor cable construction drill carriage |
| 09/29/2010 | CN101844588A Crawler tension device and crawler-type engineering machinery |
| 09/29/2010 | CN101122211B Sailing course drill |
| 09/28/2010 | USRE41759 Lockable swivel apparatus and method |
| 09/28/2010 | US7802637 Steerable bit system assembly and methods |
| 09/28/2010 | CA2572240C Drilling systems and methods utilizing independently deployable multiple tubular strings |
| 09/27/2010 | CA2688733A1 Transportable well service platform |
| 09/23/2010 | WO2010107606A2 System and method for directional boring including continuous reverse rotation |
| 09/23/2010 | WO2010106124A2 Method and device for drilling shafts in ground layers consisting of rock, clay and/or related materials |
| 09/23/2010 | WO2010088231A3 Expandable stabilizer with roller reamer elements |
| 09/23/2010 | US20100238762 Method and Apparatus For Evaluating Submarine Formations |
| 09/23/2010 | US20100236833 Displaceable Plug in a Tool String Filter |
| 09/23/2010 | US20100236830 Apparatus for directional control of a drilling tool |
| 09/23/2010 | US20100236828 Tool for drilling through loosely packed materials |
| 09/23/2010 | CA2755764A1 Method and device for drilling shafts in ground layers consisting of rock, clay and/or related materials |
| 09/22/2010 | EP2230375A1 Resonance enhanced drilling: method and apparatus |
| 09/22/2010 | EP2229498A2 Directional drilling control using modulated bit rotation |
| 09/22/2010 | EP2229497A1 Drilling system |
| 09/22/2010 | CN201588545U Punching squirt gun |
| 09/22/2010 | CN201588544U Drilling guide centering device for drilling machine |
| 09/22/2010 | CN201588543U Radial well drilling device |
| 09/22/2010 | CN201588542U Self-advancing high-pressure jet head for horizontal drilling |
| 09/22/2010 | CN201588541U Lateral drill horizontal well high-effective compound windowing mill tap |
| 09/22/2010 | CN201588540U Large-bore separated arm type diving drill |
| 09/22/2010 | CN201588539U Guide pulley of ground anchor vehicle portal frame |
| 09/22/2010 | CN201588538U All-hydraulic tunnel drilling machine used in coal mines |
| 09/22/2010 | CN201588537U 套式电锤钻 Nested Hammer Drill |
| 09/22/2010 | CN201588536U Shearing-type down-the-hole drill |
| 09/22/2010 | CN101839113A Underground deviation-correcting energy extraction device |
| 09/22/2010 | CN101839112A Adjusting device of frame pillar drilling machine |
| 09/22/2010 | CN101158269B Method for drilling roadbed small-caliber horizontal jacking pipe and drill bit |
| 09/22/2010 | CN101057059B Method for installing horizon catheter used for aborsbing sea water |
| 09/21/2010 | US7798251 Circulation system for retrieval of bottom hole assembly during casing while drilling operations |
| 09/21/2010 | US7798249 Impact excavation system and method with suspension flow control |
| 09/21/2010 | CA2515296C Methods and apparatus for wellbore construction and completion |
| 09/16/2010 | WO2009087068A3 Method of expanding a tubular element in a wellbore |
| 09/16/2010 | US20100230168 Underground boring machine and method for controlling underground boring |
| 09/16/2010 | US20100230167 Tension/collar/reamer assemblies and methods |
| 09/16/2010 | US20100230164 Compositions and methods for inhibiting lost circulation during well operation |
| 09/16/2010 | DE10325576B4 Führungskopf zum Erdbohren und Erdbohrmaschine Guide head to Erdbohren and earth boring machine |
| 09/16/2010 | DE102009023910A1 Erdbohrvorrichtung Boring apparatus |
| 09/16/2010 | DE102007045979B4 Bohrvorrichtung und Verfahren zum Einbringen einer Bohrung in das Erdreich Drilling apparatus and method for introducing a bore into the earth |
| 09/16/2010 | CA2792463A1 A borehole cutting assembly for directional cutting |
| 09/15/2010 | EP2227617A1 Method and apparatus for small-charge blasting |
| 09/15/2010 | CN201581828U Hoister transverse prospecting drill |
| 09/15/2010 | CN201581809U Hydraulic fishable whipstock |
| 09/15/2010 | CN201581808U Head mechanism of direction-controlled curve punching machine |
| 09/15/2010 | CN201581807U Tool specially used for drilling holes on underground sleeve of radial horizontal well with ultra-short radius |
| 09/15/2010 | CN201581806U Coal face projection prevention hydraulic drill system |
| 09/15/2010 | CN201581805U Drilling tool for sleeving anchor rope |
| 09/15/2010 | CN201581804U Earth drill |
| 09/15/2010 | CN101835953A Well construction using small laterals |
| 09/15/2010 | CN101832105A Method for well drilling and cementing of radial horizontal well with ultra-short radius and equipment thereof |
| 09/15/2010 | CN101832104A Retractable chassis structure for rotary drill |
| 09/15/2010 | CN101832103A Movable two-arm hanging wall anchor rod and anchor cable construction drill carriage |
| 09/15/2010 | CN101832102A Movable two-platform partitioned four-arm hanging wall anchor rod and anchor cable construction drill carriage |
| 09/15/2010 | CN101832101A Jet grouting and stirring drill tool |
| 09/15/2010 | CN101831906A Dry type pneumatic rock drilling pile-driving machine and working method thereof |
| 09/15/2010 | CN101429847B Oil field well workover operation machine |
| 09/15/2010 | CN101429846B Hydraulic bearing walking device |
| 09/14/2010 | US7793741 Impact excavation system and method with injection system |
| 09/14/2010 | US7793723 Submerged loading system |
| 09/10/2010 | WO2010102015A1 Hydraulically released window mill |
| 09/10/2010 | WO2010101987A2 Two pipe horizontal directional drilling system |
| 09/10/2010 | WO2010100317A1 A method for mounting a tube in the ground |
| 09/10/2010 | WO2010099949A2 Earth boring device |
| 09/10/2010 | WO2010065573A3 Ball piston steering devices and methods of use |
| 09/10/2010 | WO2010042725A3 Methods and apparatus for wellbore enhancement |
| 09/10/2010 | WO2010042719A3 Methods and apparatus for mechanical and thermal drilling |
| 09/10/2010 | WO2009074636A3 Method of expanding a tubular element in a wellbore |
| 09/10/2010 | CA2754452A1 Hydraulically released window mill |
| 09/09/2010 | US20100224415 Methods and apparatus for drilling, completing and configuring U-tube boreholes |
| 09/09/2010 | US20100224414 Chip deflector on a blade of a downhole reamer and methods therefore |
| 09/09/2010 | US20100224413 Method of Selecting a Drilling Motor for a Casing Drill String |
| 09/09/2010 | US20100224412 Vibrating downhole tool and methods |
| 09/09/2010 | US20100224411 Boring Tool Tracking Fundamentally Based on Drill String Length, Pitch and Roll |
| 09/09/2010 | US20100224410 System and method for damping vibration in a drill string using a magnetorheological damper |
| 09/09/2010 | US20100224408 Equipment for excavation of deep boreholes in geological formation and the manner of energy and material transport in the boreholes |
| 09/09/2010 | US20100224381 Mobile Self-Erecting Directional Drilling Rig Apparatus |
| 09/09/2010 | US20100224356 Apparatus for electrical power and/or data transfer between rotating components in a drill string |
| 09/08/2010 | CN201574687U Three-pipe high-pressure rotary jetting driller |
| 09/08/2010 | CN201574686U Handheld double-power well-point drilling machine |
| 09/08/2010 | CN201574421U Rotary drill carriage and its sliding mechanism |
| 09/08/2010 | CN1791732B Drill bit and drilling system with underreamer- and stabilization-section |