| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/06/2008 | CN101235716A Prealarming method and method for avoiding oil gas well drilling neighbouring wellbore collision |
| 08/06/2008 | CN101235705A All-cover type skid-mounted film separation and nitrogen-making device |
| 08/05/2008 | US7407021 Methods for the installation of earth anchors |
| 08/05/2008 | US7407020 Rotating systems associated with drill pipe |
| 07/31/2008 | WO2008092100A2 Chemically enhanced gas-lift for oil and gas wells |
| 07/31/2008 | WO2007133331A3 Non-damaging manganese tetroxide water-based drilling fluids |
| 07/31/2008 | US20080179098 Drill Bit Assembly for Directional Drilling |
| 07/31/2008 | US20080179091 Suction Coring Device and Method |
| 07/31/2008 | US20080179090 Cuttings processing system |
| 07/31/2008 | US20080179064 Hinge-Over Riser Assembly |
| 07/31/2008 | US20080179063 Chemically enhanced gas-lift for oil and gas wells |
| 07/31/2008 | DE202008006571U1 Mobiles Erdbohrgerät Mobile earth boring |
| 07/30/2008 | EP1354120B1 Directional drilling apparatus |
| 07/30/2008 | CN201092825Y Deepwater drilling device containing automatically righting subaqueous blowout preventer |
| 07/30/2008 | CN101230777A Wellbore fluids for casing drilling |
| 07/30/2008 | CN101230776A Axial vibration reduction anti-off tool for gas drilling |
| 07/29/2008 | US7404454 Bit face orientation control in drilling operations |
| 07/29/2008 | US7404443 Compensation system for a jacking frame |
| 07/29/2008 | CA2463603C Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 07/29/2008 | CA2412153C Drilling and lining method using a spoolable tubing |
| 07/29/2008 | CA2407506C Expandable apparatus for drift and reaming a borehole |
| 07/29/2008 | CA2367009C Whipstock casing milling system |
| 07/29/2008 | CA2341119C Methods and associated apparatus for drilling and completing a wellbore junction |
| 07/29/2008 | CA2324233C Method and system for optimizing penetration rate |
| 07/29/2008 | CA2271401C Drilling with casing |
| 07/24/2008 | WO2008087446A1 Improved shoe for wellbore lining tubing |
| 07/24/2008 | WO2008070038B1 Expandable reamers for earth-boring applications and methods of using the same |
| 07/24/2008 | DE202008004164U1 Glockenbohrer mit Doppeltwendel Bells drill with double helix |
| 07/24/2008 | CA2675667A1 Improved shoe for wellbore lining tubing |
| 07/24/2008 | CA2675198A1 Drill stem guide and wrench apparatus |
| 07/23/2008 | EP1945910A1 Drill slide for rock drilling apparatus |
| 07/23/2008 | EP1781888B1 Mobile basket for consolidation work on walls |
| 07/23/2008 | EP1669539B1 Angle and reactive torque control device for a gerotor type motor provided with a spindle and drilling bit in a bended drill string |
| 07/23/2008 | CN201090239Y High pressure abradant shooting-flow drilling-skiving integration slit anti-projecting equipment |
| 07/23/2008 | CN201090157Y Callback type deflector anchorage tool for branching well |
| 07/23/2008 | CN201090138Y Lower casing rapid grouting device |
| 07/23/2008 | CN201090137Y Navigation channel drilling machine |
| 07/23/2008 | CN201090136Y Double-dynamic-force workover rig |
| 07/23/2008 | CN201090135Y Combined drilling tool |
| 07/23/2008 | CN201090132Y Drilling machine |
| 07/23/2008 | CN101228334A Apparatus and method for driving casing or conductor pipe |
| 07/23/2008 | CN101225735A Trestle supporting pneumatic drilling machine |
| 07/23/2008 | CN100404785C Method of creating a borehole in an earth formation |
| 07/23/2008 | CN100404209C Sonic drill |
| 07/22/2008 | US7403014 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 07/22/2008 | US7403013 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 07/22/2008 | US7401666 Reaming and stabilization tool and method for its use in a borehole |
| 07/22/2008 | US7401665 Apparatus and method for drilling a branch borehole from an oil well |
| 07/22/2008 | US7401648 One trip well apparatus with sand control |
| 07/22/2008 | CA2467129C A boring head and a roller cutter and a saddle for a boring head for rotary drilling |
| 07/22/2008 | CA2440876C Method of forming a trenchless flowline |
| 07/22/2008 | CA2364895C Metal melt boring process |
| 07/22/2008 | CA2308846C Small diameter run in whipstock and method for setting in large diameter casing |
| 07/22/2008 | CA2303662C Mud saver kelly valve |
| 07/18/2008 | CA2611067A1 Fluid characterization from acoustic logging data |
| 07/17/2008 | WO2007061358A8 A bearing in connection with a boom |
| 07/17/2008 | DE202007018416U1 An einem Fahrzeug montierbare Trägervorrichtung zur Aufnahme eines Eindrehgerätes Mounted on a vehicle carrying device for receiving a driving tool |
| 07/16/2008 | EP1944348A1 Wellbore fluids for casing drilling |
| 07/16/2008 | CN201087706Y Casing shoe for casing tube well drilling |
| 07/16/2008 | CN201087704Y Drilling tool stabilizer for gas drilling |
| 07/16/2008 | CN101223334A Coiled tubing drilling system |
| 07/16/2008 | CN101220591A Bottom expanding equipment of pipe sank prefabricated steel concrete bottom expansion pile |
| 07/16/2008 | CN100402794C Branched well selective guiding in tool |
| 07/15/2008 | US7398839 Impact excavation system and method with particle trap |
| 07/15/2008 | US7398838 Impact excavation system and method with two-stage inductor |
| 07/15/2008 | US7398833 Heavy load carry slips and method |
| 07/15/2008 | CA2499381C Apparatus and method for pressure-compensated telemetry and power generation in a borehole |
| 07/15/2008 | CA2315969C Underbalanced drilling tool and method |
| 07/10/2008 | WO2008080572A1 Method and device for laying pipes in the ground |
| 07/10/2008 | WO2007133929A3 Method and system for retrieving riser for storm evacuaton |
| 07/10/2008 | US20080164067 Method for Reducing Aqueous Content of Oil-Based Fluids |
| 07/10/2008 | US20080164066 Method and device for producing a cased string bore |
| 07/10/2008 | US20080164065 Construction of a Tubular at a Downhole Location |
| 07/10/2008 | CA2617432A1 Method and device for producing a cased string bore |
| 07/09/2008 | EP1942248A1 System and methods for tubular expansion |
| 07/09/2008 | EP1942247A1 Method and apparatus to drill in the soil by displacement |
| 07/09/2008 | EP1941123A1 Extended reach drilling apparatus and method |
| 07/09/2008 | CN201083084Y Mobile low-temperature prying drilling machine for train |
| 07/09/2008 | CN201083083Y Hydraulic pressurization well borer |
| 07/09/2008 | CN201083082Y Climbing rock drilling machine |
| 07/09/2008 | CN101216053A Crawler type all-hydraulic tunnel drilling rig hydraulic system for coal mine |
| 07/09/2008 | CN101215940A Boring and pole setting machine |
| 07/09/2008 | CN101215836A Construction machinery used for large diameter hollow pile and its construction method and use |
| 07/09/2008 | CN100401106C Adaptive borehole assembly visualization in a three-dimensional scene |
| 07/09/2008 | CN100400794C Method and system for accessing substerranean deposits from the surface |
| 07/08/2008 | US7395882 Casing and liner drilling bits |
| 07/08/2008 | US7395877 Apparatus and method to reduce fluid pressure in a wellbore |
| 07/08/2008 | CA2512756C Cutting device and method for producing a cut hole |
| 07/08/2008 | CA2420660C Rock drilling apparatus |
| 07/08/2008 | CA2365971C Arrangement in rock drilling apparatus |
| 07/03/2008 | US20080156536 Apparatus and Method for Vibrating a Drill Bit |
| 07/03/2008 | US20080156530 Separation Device for Material from a Drilling Rig Situated on the Seabed |
| 07/03/2008 | US20080156480 Apparatus for expanding a tubular member |
| 07/03/2008 | DE102006059301B3 Boreholes producing device for e.g. underground mining, has borehole closure utilized as pig, which is arranged in drilling direction in front of pilot crown such that pig migrates during drilling process in front of pilot crown |
| 07/02/2008 | EP1937929A1 Drill string suspension |
| 07/02/2008 | EP1815102B1 One trip milling system |
| 07/02/2008 | CN201080784Y End-face cutting drill head |
| 07/02/2008 | CN101213351A Drill slide for rock drilling apparatus |
| 07/02/2008 | CN101210481A Large curvature radiation horizontal well drilling technique and device |
| 07/02/2008 | CN101210480A Four-in-one drilling tool |