Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 7 - Special methods or apparatus for drilling
Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
09/2012
09/07/2012CA2830721A1 High performance wellbore departure and drilling system
09/06/2012US20120222902 High performance wellbore departure and drilling system
09/06/2012US20120222901 Synthetic Formation Evaluation Logs Based on Drilling Vibrations
09/06/2012US20120222900 Vibration detection in a drill string based on multi-positioned sensors
09/05/2012EP2495388A1 Drilling head for drilling machines
09/05/2012EP2494137A1 Method for attaching protective structure to feed beam, and protective structure in rock drilling rig
09/05/2012CN202417311U Arm-embraced torque transmission device of rotary drilling rig
09/05/2012CN202417310U Hollow whipstock for sidetrack drilling of branch wells
09/05/2012CN202417309U Track rotary type full-hydraulic underground drill rig
09/05/2012CN202417308U Dual-functional rotary digging machine
09/05/2012CN202417307U Multifunctional longhole drilling machine
09/05/2012CN202417306U Novel water well drilling machine
09/05/2012CN202417305U Special loading platform for rotary drilling machine
09/05/2012CN202417304U Rolling type shifting device capable of being installed at well drilling site and used for cluster well drilling machine
09/05/2012CN202417303U Hydraulic excavator type drilling machine
09/05/2012CN202417302U Vibrating drilling type impact digging drilling machine
09/05/2012CN202417301U Telegraph pole foundation pit excavating machine
09/05/2012CN202416295U Rock stratum hole pile excavating machine tool
09/05/2012CN1944939B Separable driving type sleeve screw drilling rig and its construction method
09/05/2012CN102654024A Hydraulic chambering device for drilling
09/05/2012CN102654023A Main and auxiliary underwater system for deepwater drilling and setting method thereof
09/05/2012CN102654022A Multi-process pile hole construction method
09/05/2012CN101871322B Pressurizing and pushing device of sleeve pipe
09/05/2012CN101737007B Self-propelled heavy desert workover rig chassis
09/05/2012CN101713278B One-pile double-machine construction method for drilling pouring pile hole formation
09/05/2012CN101672178B Touch-down self-stopping device of drill rod of rotary drilling rig
09/05/2012CN101672159B Vertical well wall small-bore bare hole horizontal well drilling method for oil-water well
09/05/2012CN101644136B Combination of reaming stabilizer and bottom drilling device
09/04/2012US8256587 Shock absorber
09/04/2012US8256537 Blasting lateral holes from existing well bores
09/04/2012US8256535 Mill-through tailpipe liner exit and method of use thereof
09/04/2012US8256533 Distance holder with helical slot
09/04/2012US8256531 Vertizontal geothermal loop and installation method
09/04/2012US8256530 Method of processing rock with laser and apparatus for the same
09/04/2012US8256520 Drill ship
09/04/2012US8256519 System and method for sub-cooling hydrocarbon production fluid for transport
09/04/2012CA2472313C Carrier vehicle for drilling or rockbolting machine
08/2012
08/30/2012WO2012116155A1 Electric motor for laser-mechanical drilling
08/30/2012WO2012116148A1 Method of high power laser-mechanical drilling
08/30/2012WO2012115803A2 Improved method of replacing an underground pipe
08/30/2012WO2012115644A1 Adjustable body supported cutter arms for underreamer
08/30/2012WO2012113024A1 Fluid drilling head nozzle design
08/30/2012WO2012113023A1 Fluid drilling head with sliding gauging ring
08/30/2012US20120217068 Lateral Well Drilling Apparatus and Method
08/30/2012US20120217067 Systems and methods for improving drilling efficiency
08/30/2012US20120217066 Link carrier apparatus for a drilling rig
08/30/2012US20120217064 Pulsed Electric Rock Drilling Apparatus with Non-Rotating Bit and Directional Control
08/30/2012US20120217063 Hoisting device
08/30/2012US20120217019 Shear laser module and method of retrofitting and use
08/30/2012US20120217018 Laser assisted blowout preventer and methods of use
08/30/2012US20120217017 Laser assisted system for controlling deep water drilling emergency situations
08/30/2012US20120217015 Laser assisted riser disconnect and method of use
08/30/2012US20120217008 System and Method for Stress Field Based Wellbore Steering
08/30/2012DE10359880B4 Bohrgestängesystem mit einem flexiblen Biegeelement und Verfahren zum optimierten Richtungsbohren Bohrgestängesystem with a flexible bending element and method for optimized directional drilling
08/30/2012DE102008036722B4 Verfahren, Vorrichtung und Bohrkopf zum Einbringen einer Bohrung in das Erdreich Method, device and drill head for introducing a hole in the ground
08/30/2012CA2827989A1 Fluid drilling head nozzle design
08/30/2012CA2827988A1 Fluid drilling head with sliding gauging ring
08/30/2012CA2826068A1 Adjustable body supported cutter arms for underreamer
08/29/2012EP2491220A2 Wellbore completion
08/29/2012EP2491187A2 Tether tracking system and method for mobile machine
08/29/2012CN202401980U Mast and long spiral drilling machine with same
08/29/2012CN202401968U Hydraulic spring roller wheel stabilizer
08/29/2012CN202401967U Gauge protection guide and drill with same
08/29/2012CN202401966U Rotary drilling rig
08/29/2012CN202401965U Vehicle-mounted long auger
08/29/2012CN202401964U Long spiral long-hole drilling machine
08/29/2012CN202401963U Connection structure between base plate and pile frame and drilling machine using connection structure
08/29/2012CN102650203A Buoyant valve and self-balancing arrangement method for valve-contained operation sleeve for gas pumping hole
08/29/2012CN101956530B Underground horizontal bore drilling tool used for petroleum drilling
08/29/2012CN101899949B Multifunctional scour-preventing jet flow drilling and joint-cutting spray head for coal bed
08/29/2012CN101793125B Horizontal directional drilling pipeline rock strata crossing composite reaming construction method
08/29/2012CN101235705B All-cover type skid-mounted film separation and nitrogen-making device
08/28/2012US8251148 System for active heave compensation and use thereof
08/28/2012CA2714983C Drilling unit, method for slot drilling and slotting device
08/28/2012CA2525793C Drill bit and system for drilling a borehole
08/23/2012WO2012112926A2 Method and apparatus for strengthening a wellbore
08/23/2012WO2012112155A1 System and method for kicking-off a rotary steerable
08/23/2012WO2012109759A1 Low headroom confined space geoexchange drilling system and method
08/23/2012US20120211281 Low headroom confined space geoexchange drilling system and method
08/23/2012US20120211279 Method and apparatus for strengthening a wellbore
08/22/2012EP2489823A1 Device for splitting solid materials
08/22/2012EP1989390B1 Running bore-lining tubulars
08/22/2012CN202392109U Two-stage seal structure for dynamic seal of underground dynamic drilling tool
08/22/2012CN202391466U Mine refuge vehicle with drilling function
08/22/2012CN202391432U Rock drilling and slagging-off dual-purpose trolley for roadway
08/22/2012CN202391358U Variable frequency driving electric workover rig
08/22/2012CN202391346U Tensioned mooring underwater drilling system
08/22/2012CN202391345U Recyclable well drilling and well completion whipstock for oil drilling
08/22/2012CN202391344U Double-layer cylinder sealing structure for rotary guide drilling hydraulic actuating mechanism
08/22/2012CN202391343U Downhole in-hole drilling machine
08/22/2012CN202391342U Locking device of driving shaft end cover of rotary drilling machine
08/22/2012CN102644477A Method for extracting gas of protected layer through wear layer drilling in protective layer airway high-position drilling field
08/22/2012CN102644476A Method for pumping gas of protected layer by layer penetration and hole drilling on high-position drilling fields of protecting layer machinery tunnel
08/22/2012CN102644445A Self-lubricating method and structure of roller type stabilizer and roller component of redresser
08/22/2012CN102080526B Method for extracting gas from bedding level fractured well of ground coal seam roof
08/22/2012CN102080518B Method for extracting gas from coal seam roof complex branched well
08/22/2012CN101864896B Hydraulic drilling rig device on construction drill carriage
08/22/2012CA2748994A1 Downhole hydraulic jetting assembly, and method for stimulating a production wellbore
08/21/2012US8245787 Utility skid tree support system for subsea wellhead
08/21/2012US8245786 System, method and apparatus for sleeved tensioner rod with annular adhesive retention
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