| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 02/17/2010 | CN101652531A Noise-dampening shield structure for rock drilling apparatus |
| 02/17/2010 | CN101649722A Prefabricated drill scout |
| 02/16/2010 | US7661488 Regulator of angle and reactive moment of a gerotor type motor having a spindle and drilling bit in a bent drilling string |
| 02/16/2010 | CA2542024C Electrically sequenced tractor |
| 02/16/2010 | CA2468886C Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence |
| 02/16/2010 | CA2384815C Downhole latch assembly and method of using the same |
| 02/11/2010 | WO2010017200A2 Subsea differential-area accumulator |
| 02/11/2010 | WO2010017139A2 Apparatus and method for controlling the feed-in speed of a high pressure hose in jet drilling operations |
| 02/11/2010 | WO2010016862A1 Downhole adjustable bent-angle mechanism for use with a motor for directional drilling |
| 02/11/2010 | WO2010015412A2 Method, device and drill head for making a borehole in the soil |
| 02/11/2010 | WO2006116635A3 Conductor pipe string deflector and method |
| 02/11/2010 | US20100032212 Downhole adjustable bent-angle mechanism for use with a motor for directional drilling |
| 02/11/2010 | US20100032209 Percussion assisted rotary earth bit and method of operating the same |
| 02/11/2010 | US20100032208 Drillstring Swivel Torque Monitor |
| 02/11/2010 | US20100032207 Method and System for Forming a Non-Circular Borehole |
| 02/11/2010 | US20100032206 Device and method for explosive drilling |
| 02/11/2010 | US20100031653 Method and device for the utilization of supercritical subsurface steam in combination with supercritical thermal and hydraulic power stations |
| 02/11/2010 | CA2733064A1 Downhole adjustable bent-angle mechanism for use with a motor for directional drilling |
| 02/10/2010 | EP2150674A2 Method and device for verifying the casing of a pipeline when the pipeline is inserted into a liquid-filled borehole |
| 02/10/2010 | EP2150673A1 Method of quarrying dimensional stone, and line drilling apparatus |
| 02/10/2010 | CN201401167Y Hydraulic tunnel drilling machine |
| 02/10/2010 | CN201401130Y All-hydraulic rock drilling crawler |
| 02/10/2010 | CN201401129Y Hybrid well maintenance operation machine |
| 02/10/2010 | CN101646836A Method and assembly for abrasive jet drilling |
| 02/10/2010 | CN101644137A Underwater confining pressure-resistant flexible insulation belt |
| 02/10/2010 | CN101644136A Combination of reaming stabilizer and bottom drilling device |
| 02/10/2010 | CN101644135A Rotary drilling rig and drilling device thereof |
| 02/10/2010 | CN100588816C Construction method for horizontal drilling |
| 02/10/2010 | CN100588815C Vertical axis type drilling machine inclined hole boring machine |
| 02/09/2010 | US7658243 System and method for preventing slippage and rotation of components in a tubular housing |
| 02/09/2010 | US7658241 Underreaming and stabilizing tool and method for its use |
| 02/09/2010 | US7658240 Methods and apparatus for forming hole in ground |
| 02/09/2010 | US7658228 High pressure system |
| 02/09/2010 | CA2463684C Rock drilling apparatus and rock breaking machine |
| 02/04/2010 | WO2010013075A1 Radial collector well and method for constructing or improving radial collector wells |
| 02/04/2010 | US20100025116 Steerable rotary directional drilling tool for drilling boreholes |
| 02/04/2010 | US20100025115 Directional control drilling system |
| 02/04/2010 | US20100025114 PCD Percussion Drill Bit |
| 02/04/2010 | US20100025112 In-situ refraction apparatus and method |
| 02/04/2010 | US20100025110 System and method for controlling the integrity of a drilling system |
| 02/04/2010 | US20100025109 Apparatus and Method for Generating Formation Textural Feature Images |
| 02/04/2010 | US20100025108 Method for drilling rock |
| 02/04/2010 | US20100025042 Drilling method and downhole cleaning tool |
| 02/04/2010 | DE102008034083A1 Erdbohrvorrichtung Boring apparatus |
| 02/03/2010 | EP2149671A2 Method and apparatus for retrieving an assembly from a wellbore |
| 02/03/2010 | CN201396154Y Gas drilling well site sample gas filter |
| 02/03/2010 | CN201396078Y Combined type flow increasing connector for offshore oil-drilling marine riser |
| 02/03/2010 | CN201396070Y Adjustment mechanism and drilling rig with same |
| 02/03/2010 | CN201396069Y Anti-deviation combined drill tool for well drilling at deviation-prone stratum |
| 02/03/2010 | CN201396068Y Folding tube trunking moving along with drilling machine |
| 02/03/2010 | CN201396067Y Down-hole drilling tool for increasing mechanical drilling rate of slim holes |
| 02/03/2010 | CN201396066Y Reverse direction hole-guiding machine for PBA border pile construction |
| 02/03/2010 | CN201396064Y Luffing mechanism and rotary drilling rig with same |
| 02/03/2010 | CN101641492A System, method, and apparatus for passive and active updrill features on roller cone drill bits |
| 02/03/2010 | CN101641491A Distance holder with helical slot |
| 02/03/2010 | CN101641490A Distance holder with jet deflector |
| 02/03/2010 | CN101638975A Head drop preventer for screw drill |
| 02/02/2010 | US7654343 Deviated drilling method for water production |
| 02/02/2010 | US7654340 Directional reaming system |
| 02/02/2010 | US7654327 Tensioner assembly |
| 02/02/2010 | US7654317 Drill hole measuring device and rock drilling unit |
| 02/02/2010 | CA2499760C Reverse circulation directional and horizontal drilling using concentric coil tubing |
| 02/02/2010 | CA2454409C Wear resistant tubular connection |
| 02/02/2010 | CA2200937C One trip milling system |
| 02/01/2010 | CA2674350A1 Method and apparatus for retrieving an assembly from a wellbore |
| 01/28/2010 | WO2010011308A1 Tilted drive sub |
| 01/28/2010 | WO2010011282A2 Deep water pile driver |
| 01/28/2010 | WO2010010487A2 System and method for drilling a borehole |
| 01/28/2010 | WO2010009826A1 Earth auger device |
| 01/28/2010 | US20100021239 Drilling rig placed on the sea bed and equipped for drilling of oil and gas wells |
| 01/28/2010 | US20100018775 Drilling Tool with Fluid Cleaner |
| 01/28/2010 | US20100018774 Excavator apparatus for underground excavation |
| 01/28/2010 | US20100018773 Tilted Drive Sub |
| 01/28/2010 | US20100018772 Articulated extraction pipe |
| 01/28/2010 | US20100018771 Rotary Drill Bit |
| 01/28/2010 | US20100018715 Offshore universal riser system |
| 01/28/2010 | CA2732036A1 System and method for drilling a borehole |
| 01/28/2010 | CA2731733A1 Tilted drive sub |
| 01/28/2010 | CA2731641A1 Deep water pile driver |
| 01/27/2010 | EP2147182A1 A method and a device for intervention in an underwater production well |
| 01/27/2010 | EP2147162A1 Installation of underwater ground anchorages |
| 01/27/2010 | CN201391331Y Integral in-hole drilling tool for drilling slotting punched hole of coal seam |
| 01/27/2010 | CN201391251Y Adjustable-type back-frame on-vehicle hydraulic energy-storage workover rig |
| 01/27/2010 | CN201391232Y Idler wheel stabilizer |
| 01/27/2010 | CN201391231Y Drilling positioner |
| 01/27/2010 | CN201391230Y Combined type countable guider |
| 01/27/2010 | CN201391229Y Wheel-type ditcher |
| 01/27/2010 | CN201391228Y High wear resistance bent housing of screw drill |
| 01/27/2010 | CN201391227Y Automatic explosive-decreasing device for geophysical prospecting shot hole |
| 01/27/2010 | CN201391226Y Anti-dropping alarm device of screw drill |
| 01/27/2010 | CN201391225Y Anchoring drill based on double-pump complementary automatic interflowing working mode |
| 01/27/2010 | CN101634218A Combined drilling tool with a drilling grouting-control device |
| 01/27/2010 | CN100585090C Spray grouting method and spray grouting boring tool |
| 01/26/2010 | US7650952 Passive vertical drilling motor stabilization |
| 01/26/2010 | US7650951 Resettable actuator for downhole tool |
| 01/26/2010 | US7650944 Vessel for well intervention |
| 01/21/2010 | WO2009129116A3 Combination whipstock and seal bore diverter system |
| 01/21/2010 | WO2009029821A3 Apparatus and method for estimating orientation of a liner during drilling of a wellbore |
| 01/21/2010 | WO2009029816A3 Apparatus and method for estimating orientation of a liner during drilling of a wellbore |
| 01/21/2010 | WO2008103031A8 Apparatus for driving elongated elements into the ground |