| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/27/2011 | CA2768721A1 Slip ring apparatus for a rotary steerable tool |
| 01/27/2011 | CA2767769A1 Offshore drilling system |
| 01/26/2011 | EP2278114A2 Apparatus and methods for drilling a wellbore using casing |
| 01/26/2011 | EP2278113A2 Apparatus and methods for drilling a wellbore using casing |
| 01/26/2011 | EP2278112A2 Apparatus and methods for drilling a wellbore using casing |
| 01/26/2011 | EP2278111A2 Apparatus and methods for drilling a wellbore using casing |
| 01/26/2011 | EP2122107B1 Distance holder with jet deflector |
| 01/26/2011 | EP1616071B1 Drill bit |
| 01/26/2011 | EP1390601B1 Method and apparatus for determining drilling paths to directional targets |
| 01/26/2011 | CN201723182U High-order elliptic profile connection and drilling rig feeding mechanism employing same |
| 01/26/2011 | CN201723152U Gripper of horizontal position drilling machine |
| 01/26/2011 | CN201723151U Downhole excavator |
| 01/26/2011 | CN201723150U Air heating system of low-temperature mobile drill |
| 01/26/2011 | CN201723149U Sealing structure for mud return of vertical shaft drilling machine power head |
| 01/26/2011 | CN201723148U Water head |
| 01/26/2011 | CN101960086A A method and device for making lateral openings out of a wellbore |
| 01/26/2011 | CN101960085A Method and apparatus for facilitating assembly and erection of a drilling rig |
| 01/26/2011 | CN101956531A Underground horizontal drilling combined drilling tool of oil well drilling platform |
| 01/26/2011 | CN101956530A Underground horizontal bore drilling tool used for petroleum drilling |
| 01/26/2011 | CN101956523A Multifunctional engineering driller of rock tunnel |
| 01/26/2011 | CN101082265B Working machine, especially a drilling rig |
| 01/26/2011 | CN101074596B Diameter variable location stabilizer |
| 01/25/2011 | US7874381 Pneumatic line deicing system |
| 01/25/2011 | US7874379 Damping device for an output shaft in a gearbox |
| 01/25/2011 | CA2585489C Sealed branch wellbore transition joint |
| 01/25/2011 | CA2498914C Expandable anchor |
| 01/25/2011 | CA2468433C A wellhead assembly for communicating with the casing hanger annulus |
| 01/20/2011 | WO2011008680A2 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods |
| 01/20/2011 | WO2010129169A3 Standoff-independent resistivity sensor system |
| 01/20/2011 | US20110011648 Tool for cutting coke and other hard materials in drums |
| 01/20/2011 | US20110011646 Apparatus and methods for drilling a wellbore using casing |
| 01/20/2011 | US20110011645 Crosslinked glycerol or oligoglycerol esters, and use thereof as an additive in drilling fluids |
| 01/20/2011 | US20110011644 Methods and apparatus for attenuating drillstring vibrations |
| 01/20/2011 | US20110011579 Apparatus and System to Allow Tool Passage Ahead of a Bit |
| 01/19/2011 | EP2274526A1 Drive shaft assembly for a downhole motor |
| 01/19/2011 | EP2018463B1 A whipstock |
| 01/19/2011 | CN201714307U Heavy air drill auxiliary support |
| 01/19/2011 | CN201714299U Four-wheel drive multifunctional drilling machine |
| 01/19/2011 | CN201714298U All hydraulic transverse track-mounted drilling rig for coal mines |
| 01/19/2011 | CN201714297U Mining dual-crawler drilling machine |
| 01/19/2011 | CN201714296U Double-roller wheel-type well dredger |
| 01/19/2011 | CN201714295U Underground vertical and horizontal dual-purpose drill rig |
| 01/19/2011 | CN201714294U Double-action puncher |
| 01/19/2011 | CN101952539A Systems and methods for improved positioning of pads |
| 01/19/2011 | CN101949263A Self-propelled remote control rotary drilling machine |
| 01/13/2011 | WO2011005143A1 Well completion method |
| 01/13/2011 | WO2011003157A1 Receiving lateral wellbore and method for implanting same |
| 01/13/2011 | WO2010111630A3 Continuous geomechanically stable wellbore trajectories |
| 01/13/2011 | US20110005840 Method and apparatus for rotary mining |
| 01/13/2011 | US20110005838 Horizontal directional drilling system |
| 01/13/2011 | US20110005837 Fixed cutter drill bit for abrasive applications |
| 01/13/2011 | US20110005836 Stabilizer subs for use with expandable reamer apparatus,expandable reamer apparatus including stabilizer subs and related methods |
| 01/13/2011 | US20110005834 Method to control bit load |
| 01/13/2011 | US20110005832 Offshore thermal treatment of drill cuttings fed from a bulk transfer system |
| 01/13/2011 | US20110005773 Self healing filter-cake removal system for open hole completions |
| 01/13/2011 | US20110005769 Rotating and reciprocating swivel apparatus and method |
| 01/13/2011 | US20110005758 Method and composition for curing lost circulation |
| 01/13/2011 | US20110005755 Downhole Casing Cutting Tool |
| 01/13/2011 | CA2767195A1 Well completion method |
| 01/12/2011 | EP2273064A1 Procedures and equipment for profiling and jointing of pipes |
| 01/12/2011 | EP2129859B1 Distance holder with helical slot |
| 01/12/2011 | CN201707846U Drill floor explosion-proof display |
| 01/12/2011 | CN201705207U High temperature and high pressure air injection rock breaking well drilling device |
| 01/12/2011 | CN201705206U Drilling machine clamp holder |
| 01/12/2011 | CN201705205U Traveling retarding mechanism of drilling machine |
| 01/12/2011 | CN201705204U Stepless angle regulation turntable type hydraulic crawler drilling machine |
| 01/12/2011 | CN201705203U Hydraulic single-arm medium shallow porous drill carriage used for tunnel |
| 01/12/2011 | CN201705202U Improved roller bit drilling machine |
| 01/12/2011 | CN101946059A Directional drilling system |
| 01/12/2011 | CN101946058A Steerable system |
| 01/12/2011 | CN101946057A Steerable drilling system |
| 01/12/2011 | CN101946056A Drill packer member, drill pipe, and corresponding drill pipe string |
| 01/12/2011 | CN101942963A Vehicle hydraulic drill |
| 01/12/2011 | CN101942962A Well drilling method of through tubing of gas lift under-balanced coiled tubing |
| 01/12/2011 | CN101942961A Conveyable light marine 90t workover rig |
| 01/12/2011 | CN101392529B Bored pile control method, control system and drill using the control system |
| 01/11/2011 | US7866415 Steering device for downhole tools |
| 01/11/2011 | US7866414 Active integrated well completion method and system |
| 01/11/2011 | US7866413 Methods for designing and fabricating earth-boring rotary drill bits having predictable walk characteristics and drill bits configured to exhibit predicted walk characteristics |
| 01/08/2011 | CA2708922A1 Optimized reaming system based upon weight on tool |
| 01/06/2011 | WO2011002602A2 Wellsite equipment replacement system and method for using same |
| 01/06/2011 | WO2011000102A1 Vibrating downhole tool |
| 01/06/2011 | WO2011000075A1 Vibrating downhole tool |
| 01/06/2011 | WO2010130357A3 Pulling and compressing device |
| 01/06/2011 | US20110000716 Drill bit with a flow interrupter |
| 01/06/2011 | US20110000714 Stabilizing members for fixed cutter drill bit |
| 01/06/2011 | US20110000713 System and method for drilling using drilling fluids |
| 01/06/2011 | CA2780885A1 Vibrating downhole tool |
| 01/05/2011 | EP2268886A1 Method and apparatus for jet-assisted drilling or cutting |
| 01/05/2011 | CN201696041U Double-platform four-arm drilling, loading, conveying and anchoring integrated machine for coal roadways |
| 01/05/2011 | CN201696029U Angle fixer |
| 01/05/2011 | CN201695966U One-way locking mechanism and expansion pipe assembly for oil well subsidy construction |
| 01/05/2011 | CN201695950U Push device for driving casing pipe |
| 01/05/2011 | CN201695949U Casing driver and rotary drilling rig |
| 01/05/2011 | CN201695948U Multifunctional open-air hydraulic drill rig |
| 01/05/2011 | CN201695947U Up and down machining rotary adjustable mechanical lock rod of rotary drilling rig |
| 01/05/2011 | CN201695946U Rotary drilling machine |
| 01/05/2011 | CN201695945U 旋挖钻机 Rotary Drilling Rig |
| 01/05/2011 | CN201695944U Side motor arrangement type high-efficiency pneumatic jumbolter |
| 01/05/2011 | CN101936142A Aerated underbalanced drilling method for coal-bed gas |