| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 05/26/2011 | US20110120775 Drilling Assembly with a Steering Unit |
| 05/26/2011 | US20110120774 Drill Bit and Method for Inserting, Expanding, Collapsing, and Retrieving Drill Bit |
| 05/26/2011 | US20110120773 Switchable circulating tool |
| 05/26/2011 | US20110120772 Downhole assembly |
| 05/26/2011 | US20110120771 Gas cutting borehole drilling apparatus |
| 05/26/2011 | US20110120725 Wellbore instruments using magnetic motion converters |
| 05/25/2011 | EP2324199A1 Method of cracking rock material, and breaking device |
| 05/25/2011 | CN201843525U Automobile rotary drilling rig and getting-on platform thereof |
| 05/25/2011 | CN201843521U Side tracking bent pipe guider |
| 05/25/2011 | CN201843520U Integrated driven multidimensional hydraulic rock drilling machine |
| 05/25/2011 | CN201843519U Rotary installing machine for truck-mounted embedded parts |
| 05/25/2011 | CN201843518U Vehicle-mounted petroleum drill and power head thereof |
| 05/25/2011 | CN201843517U Light automobile drilling machine |
| 05/25/2011 | CN201843516U Rotary drilling rig for automobiles |
| 05/25/2011 | CN201843515U Long screw drilling machine |
| 05/25/2011 | CN201843514U Movable pit driller of electric concrete pole |
| 05/25/2011 | CN201843513U Double-liquid grouting pipe |
| 05/25/2011 | CN201843509U Quick power head lifting device and vehicle-mounted drill using same |
| 05/25/2011 | CN201843506U Multi-functional long spiral rotary drilling rig |
| 05/25/2011 | CN201843131U Long auger drilling machine |
| 05/25/2011 | CN102071921A Underground drilling and fracturing-integrated staged fracturing device and gas drainage process |
| 05/25/2011 | CN102071875A Automatic control system for winch and control method of automatic control system |
| 05/25/2011 | CN102071874A Drilling method suitable for gravel area |
| 05/25/2011 | CN102071873A Clean water drilling process of coal bed gas well |
| 05/25/2011 | CN102071682A Method for correcting inclined hole formed by high strength stratum bridge drilling pile in karst growing area |
| 05/25/2011 | CN101463712B Eccentric center-adjustable reducing stabilizer |
| 05/25/2011 | CN101173598B Funicular curve well drilling rail design method using stratum natural deflecting rule |
| 05/25/2011 | CN101115905B Rotation device for a boom of a mining or constructions work rig, rig and boom |
| 05/24/2011 | US7946768 Bearing apparatuses, systems including same, and related methods |
| 05/24/2011 | US7946361 Flow operated orienter and method of directional drilling using the flow operated orienter |
| 05/24/2011 | US7946360 Downhole drilling of a lateral hole |
| 05/24/2011 | US7946359 Methods and apparatus for well construction |
| 05/24/2011 | CA2600600C Method and apparatus for directional drilling with variable drill string rotation |
| 05/19/2011 | WO2011058015A1 Jacking units and bellows for down hole intervention tools |
| 05/19/2011 | WO2011058014A1 Injection drill bit |
| 05/19/2011 | WO2011057319A1 Laser alignment device for use with a drill rig |
| 05/19/2011 | WO2011036471A3 A method and apparatus for communicating with a device located in a borehole |
| 05/19/2011 | WO2009137537A3 Signal operated tools for milling, drilling, and/or fishing operations |
| 05/19/2011 | US20110114390 Sleeve arrangement |
| 05/19/2011 | US20110114388 Methods and apparatus for drilling, completing and configuring U-tube boreholes |
| 05/19/2011 | US20110114387 Annulus pressure control drilling systems and methods |
| 05/19/2011 | US20110114328 Downhole swivel apparatus and method |
| 05/19/2011 | US20110114307 Open hole non-rotating sleeve and assembly |
| 05/19/2011 | CA2785706A1 Jacking units and bellows for down hole intervention tools |
| 05/19/2011 | CA2780321A1 Laser alignment device for use with a drill rig |
| 05/18/2011 | EP2321488A1 Tilted drive sub |
| 05/18/2011 | EP2321487A1 Rock drilling rig and method of moving drilling boom thereof |
| 05/18/2011 | EP2321472A2 Deep water pile driver |
| 05/18/2011 | CN201835748U Jumbolter with rear-mounted impact mechanism |
| 05/18/2011 | CN201835747U Drilling machine with screw anchor |
| 05/18/2011 | CN201835746U Track detection and safety control system of rotary drilling rig |
| 05/18/2011 | CN201835745U Multifunctional simple folding movable arm hydraulic drill with universal articulated pair |
| 05/18/2011 | CN201835744U Multifunctional movable arm folding hydraulic drill |
| 05/18/2011 | CN201835743U Anti-dust pistol drill |
| 05/18/2011 | CN102066793A Drive shaft assembly for a downhole motor |
| 05/18/2011 | CN102066687A Method and equipment for displaying drill holes and method for directing drill rod when holes are drilled into rock |
| 05/18/2011 | CN102061933A Long drilling positioning construction process |
| 05/18/2011 | CN102061899A Hydraulic pressure balance work over rig |
| 05/18/2011 | CN102061885A Hollow drill of dead-soft coal bed zone casing |
| 05/18/2011 | CN102061883A Eccentric wheel clamp and method for running casing in drill hole of mine |
| 05/18/2011 | CN102061882A Multifunctional self-propelled tower-machine integrated core drill machine |
| 05/18/2011 | CN102061881A Unidiameter well drilling and completing method |
| 05/17/2011 | US7942481 Rock drill and method of breaking rock |
| 05/17/2011 | US7942214 Steerable drilling system |
| 05/17/2011 | US7942213 Using hydrostatic bearings for downhole applications |
| 05/17/2011 | CA2720430A1 Underwater drilling arrangement and method for introducing a tubular foundation element into the bed of a body of water |
| 05/12/2011 | WO2011055180A2 Drive mechanism |
| 05/12/2011 | WO2011055001A1 Method for coupling of a casing tube to a drill bit |
| 05/12/2011 | WO2011054020A2 Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor |
| 05/12/2011 | WO2011011505A3 Offshore drilling system |
| 05/12/2011 | WO2009070521A3 Method and apparatus for hydraulic steering of downhole rotary drilling systems |
| 05/12/2011 | US20110108327 Directional drilling control using periodic perturbation of the drill bit |
| 05/12/2011 | US20110108326 Drill Bit With Recessed Center |
| 05/12/2011 | US20110108325 Integrating Multiple Data Sources for Drilling Applications |
| 05/12/2011 | US20110108282 Apparatus and Method for Managed Pressure Drilling |
| 05/12/2011 | US20110108281 Method of providing buoyancy for a drilling riser |
| 05/12/2011 | CA2791524A1 Method for drilling, in particular percussion or rotary percussion drilling, holes in soil or rock material, and device therefor |
| 05/12/2011 | CA2779648A1 Method for coupling of a casing tube to a drill bit |
| 05/11/2011 | EP2320023A1 Method and device for expanding a pilot borehole in soil |
| 05/11/2011 | EP2319990A2 Method and system for placing at least one foundation element in the ground |
| 05/11/2011 | EP2057344B1 A method for reaming in the construction of a well |
| 05/11/2011 | CN201826837U Movable double-platform partitioned four-arm drill carriage for construction of hangwall anchor rods and anchor cables |
| 05/11/2011 | CN201826836U Audio frequency vibration head for sampling drill |
| 05/11/2011 | CN201826759U Lifting platform for construction vehicle |
| 05/11/2011 | CN201826750U Drainage drilling machine provided with self-moving device |
| 05/11/2011 | CN201826747U Transverse hydraulic drilling machine |
| 05/11/2011 | CN102052057A Pore water pressure orientator |
| 05/11/2011 | CN101382039B Full-hydraulic drive while drilling of major diameter drill while drilling and casing |
| 05/11/2011 | CN101343995B Control device of down-hole horizontal boring machine |
| 05/11/2011 | CN101225735B Trestle supporting pneumatic drilling machine |
| 05/10/2011 | US7938201 Deep water drilling with casing |
| 05/10/2011 | US7938198 Rotary digging and compression enlarging driller and boring method |
| 05/10/2011 | US7938175 Drilling, perforating and formation analysis |
| 05/10/2011 | CA2446868C Apparatus and method for drilling a wellbore with casing and cementing the casing in the wellbore |
| 05/10/2011 | CA2432038C Borehole stabilization while drilling |
| 05/05/2011 | WO2011053364A1 Downhole surveying utilizing multiple measurements |
| 05/05/2011 | WO2011051564A1 Method for attaching protective structure to feed beam, and protective structure in rock drilling rig |
| 05/05/2011 | WO2011011399A3 Slip ring apparatus for a rotary steerable tool |
| 05/05/2011 | WO2011010101A3 Downhole apparatus and method |
| 05/05/2011 | WO2011008680A3 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods |