| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 04/13/2011 | CN201794515U Walking engineering driller seat |
| 04/13/2011 | CN201794514U Portable rotary drilling rig |
| 04/13/2011 | CN201794513U Multifunctional double-fold hydraulic drilling rig with movable arms |
| 04/13/2011 | CN102016218A A method and system for installing geothermal heat exchangers, energy piles, concrete piles, micropiles, and anchors using a sonic drill and a removable or retrievable drill bit |
| 04/13/2011 | CN102011547A Moving device for petroleum drilling machine |
| 04/12/2011 | US7921917 Multi-deployable subsea stack system |
| 04/12/2011 | CA2540175C Activity data capture system for a well service vehicle |
| 04/12/2011 | CA2521658C Expanded liner system and method |
| 04/12/2011 | CA2438826C Two stage downhole drilling fluid filter |
| 04/07/2011 | WO2011041685A2 Milling tool for establishing openings in wellbore obstructions |
| 04/07/2011 | WO2011041553A2 Tools for use in drilling or enlarging well bores having expandable structures and methods of making and using such tools |
| 04/07/2011 | WO2011041532A2 Earth-boring tools having expandable members and related methods |
| 04/07/2011 | WO2011041521A2 Earth-boring tools having expandable cutting structures and methods of using such earth-boring tools |
| 04/07/2011 | WO2011041174A2 Earth boring tools having expandable members |
| 04/07/2011 | WO2011002602A3 Wellsite equipment replacement system and method for using same |
| 04/07/2011 | US20110079439 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 04/07/2011 | US20110079438 Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of directional and off center drilling |
| 04/07/2011 | US20110079437 System and method for drilling and completing lateral boreholes |
| 04/07/2011 | US20110079433 Pump-in seal |
| 04/07/2011 | US20110079432 Method and device for core drilling |
| 04/07/2011 | US20110079397 Jet-drilling and completion process |
| 04/07/2011 | DE102009043716A1 Bohrelement einer Erdbohrvorrichtung Drilling element of a boring apparatus |
| 04/07/2011 | DE102009043158A1 Earth-drilling device for expanding drilling, has tool installed at end of connecting rod comprising conical sheath body and complementary parts, where body is formed as hollow cone and loosely connected with connecting rod end piece |
| 04/07/2011 | CA2776158A1 Wellbore milling tool with wear pad |
| 04/07/2011 | CA2775842A1 Earth-boring tools having expandable members |
| 04/07/2011 | CA2775740A1 Tools for use in drilling or enlarging well bores having expandable structures and methods of making and using such tools |
| 04/07/2011 | CA2775729A1 Earth-boring tools having expandable members and related methods |
| 04/07/2011 | CA2775725A1 Earth-boring tools having expandable cutting structures and methods of using such earth-boring tools |
| 04/06/2011 | EP2304178A1 Rock drilling device |
| 04/06/2011 | EP2304160A1 Multi-function geothermal and water well drilling machine |
| 04/06/2011 | EP2304159A2 Signal operated tools for milling, drilling, and/or fishing operations |
| 04/06/2011 | EP2304158A1 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device |
| 04/06/2011 | EP1545839B1 Sonic drill |
| 04/06/2011 | CN201786265U Polycrystalline diamond compact (PDC) drill head with stable tool face for directional driller |
| 04/06/2011 | CN201786260U Slewer of drill wagon for mining use |
| 04/06/2011 | CN201786259U Drill carriage with transposable supporting mechanism |
| 04/06/2011 | CN201786258U Working host of deep hole drill for mines |
| 04/06/2011 | CN201786257U Split-type mining deep-hole drill rig |
| 04/06/2011 | CN201786256U Abnormal protrusion mine coal road digging anti-protrusion boring jumbo loading set |
| 04/06/2011 | CN201786255U Depth drill carriage pumping station for mine |
| 04/06/2011 | CN201786254U Stepless adjustable borehole track control tool |
| 04/06/2011 | CN201786244U Rotary drilling rig |
| 04/06/2011 | CN201786242U Hydraulic spiral drilling machine |
| 04/06/2011 | CN201785752U Transverse rotation type deep-mixing pile driver |
| 04/06/2011 | CN201784728U Traveling gear for rotary drilling rig |
| 04/06/2011 | CN102003145A Hole driven type horizontal directional drilling reverse circulation hole dilating drill |
| 04/06/2011 | CN102003143A Multidirectional hydraulic rock drilling machine with integrated drives |
| 04/06/2011 | CN102003142A Screw anchor drilling machine |
| 04/06/2011 | CN102003141A Monitoring walking drilling equipment |
| 04/06/2011 | CN102003140A Traversing reverse circulating drilling method of horizontal directional drilling pipeline and special drilling bit |
| 04/06/2011 | CN102003137A Drilling equipment and method |
| 04/06/2011 | CN101603309B Occlusive pile of long spiral stirring water-stop curtain and construction process thereof |
| 04/05/2011 | US7919437 Wellbore fluid comprising sulfonated copolymers with pendant alkyl groups |
| 04/05/2011 | US7918289 Method of completing a well with sand screens |
| 04/05/2011 | US7918287 Suction coring device and method |
| 04/05/2011 | CA2512641C Apparatus and methods for drilling a wellbore using casing |
| 04/05/2011 | CA2407541C Calculating directional drilling tool face offsets |
| 03/31/2011 | WO2011036471A2 A method and apparatus for communicating with a device located in a borehole |
| 03/31/2011 | WO2010151796A3 Stabilizing downhole tool |
| 03/31/2011 | WO2010132433A3 Drilling rig ice protector apparatus and methods |
| 03/31/2011 | WO2009106897A3 A method and system for facilitating assembly of a drilling rig |
| 03/31/2011 | US20110073374 Flow Pulsing Device for a Drilling Motor |
| 03/31/2011 | US20110073372 Mechanism for providing controllable angular orientation while transmitting torsional load |
| 03/31/2011 | US20110073371 Tools for use in drilling or enlarging well bores having expandable structures and methods of making and using such tools |
| 03/31/2011 | US20110073370 Earth-boring tools having expandable cutting structures and methods of using such earth-boring tools |
| 03/31/2011 | US20110073369 Earth-boring tools, methods of making earth-boring tools and methods of drilling with earth-boring tools |
| 03/31/2011 | US20110072737 Portable drilling rig apparatus and assembly method |
| 03/31/2011 | CA2775022A1 A method and apparatus for communicating with a device located in a borehole |
| 03/30/2011 | EP2302159A2 Earth removal member with features for facilitating drill-through |
| 03/30/2011 | EP2300682A1 Method and drilling apparatus for drilling |
| 03/30/2011 | EP2300681A2 System and method for improving operational characteristics of devices used in a well |
| 03/30/2011 | EP2205813B1 Method and device for testing the coating of a pipeline while laying the pipeline in a liquid-filled borehole |
| 03/30/2011 | EP2150674B1 Method and device for verifying the casing of a pipeline when the pipeline is inserted into a liquid-filled borehole |
| 03/30/2011 | CN201778657U Inclining-preventive drilling tool for gas drilling |
| 03/30/2011 | CN201778656U Hydraulic drilling machine for tunneller |
| 03/30/2011 | CN201778655U Rotating device of vehicular drilling and repairing machine rear operating room |
| 03/30/2011 | CN201778654U Air bag low-pressure automatic water drain valve of workover rig for oil field |
| 03/30/2011 | CN201778652U Low-amplitude and high-frequency torsional pulse generator |
| 03/30/2011 | CN201778650U Equal-contour-line high-yield oblique screw drilling jig |
| 03/30/2011 | CN101994505A Drilling construction method by cooperation of horizontal wells and extraction straight wells for coal bed methane in multiple objective layers |
| 03/30/2011 | CN101748899B Method for pore forming by embedding assistant bonded rebar in reinforced concrete structure |
| 03/29/2011 | US7914266 Submersible pumping system and method for boosting subsea production flow |
| 03/29/2011 | US7914233 Method and apparatus for installing an underground pipe |
| 03/29/2011 | US7913768 Release device |
| 03/29/2011 | US7913767 System and method for connecting tubular members |
| 03/29/2011 | US7913764 Return line mounted pump for riserless mud return system |
| 03/29/2011 | CA2544318C Mobile drilling rig with replaceable dolly |
| 03/24/2011 | WO2011034519A1 Directional setting tool and associated methods |
| 03/24/2011 | WO2011032874A1 Resonance enhanced rotary drilling |
| 03/24/2011 | WO2011032289A1 Offshore casing drilling method |
| 03/24/2011 | WO2010127233A3 Casing bits, drilling assemblies, and methods for use in forming wellbores with expandable casing |
| 03/24/2011 | WO2010106124A3 Method and device for drilling shafts in ground layers consisting of rock, clay and/or related materials |
| 03/24/2011 | US20110067925 Flexible directional drilling apparatus and related methods |
| 03/24/2011 | US20110067924 Impregnated cutting elements with large abrasive cutting media and methods of making and using the same |
| 03/24/2011 | US20110067923 Method of Drilling a Subterranean Borehole |
| 03/24/2011 | CA2774323A1 Resonance enhanced rotary drilling |
| 03/24/2011 | CA2774305A1 Offshore casing drilling method |
| 03/23/2011 | EP2299006A1 Method of attaching a submerged structure to a floor of a body of water |
| 03/23/2011 | EP2297422A1 Drill packer member, drill pipe, and corresponding drill pipe string |
| 03/23/2011 | EP2094933B1 Device for percussion drilling or rotary percussion drilling in rocky material |