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)
11/2007
11/21/2007EP1856367A1 Rotation device for a boom of a mining or constructions work rig, rig and boom
11/21/2007EP1709293B1 Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements
11/21/2007CN200978640Y Turning type deep sea hard rock fidelity core-picking device
11/21/2007CN200978628Y Salvaging type casing drilling surface dedicated drill bit
11/21/2007CN200978624Y Salvaging type casing drilling surface dedicated drill bit
11/21/2007CN200978623Y Drill-manipulable casing drilling surface dedicated drill bit
11/21/2007CN200978622Y High pressure water force jet marble jump drilling device
11/21/2007CN200978621Y wheeled type spiral rotary drilling rig
11/21/2007CN101076651A Method for casing drilling, drilling unit and adapter device
11/21/2007CN101074596A Diameter variable location stabilizer
11/21/2007CN100350129C Crushing method using large boreholes in underwater rock
11/20/2007US7298285 Rotary downlink system
11/20/2007US7296639 Wellstring assembly
11/20/2007CA2415057C Displacement and support device for a portable power tool
11/20/2007CA2371133C Method of creating a wellbore
11/15/2007WO2007129899A1 Seabed rig with coiled tubing
11/15/2007WO2007129120A1 Method and apparatus for oscillating a drill string
11/15/2007WO2007129115A1 Apparatus and method for selectively orienting a bit
11/15/2007US20070261892 Device for a drilling tool
11/15/2007US20070261887 Steering Systems for Coiled Tubing Drilling
11/14/2007EP1853789A1 A method of geothermal loop installation
11/14/2007EP1747343B1 Pipe tension measuring device
11/14/2007EP1668220B1 Method and device for boring holes in soil or rock
11/14/2007EP1644608B1 Coupling for dual member pipe
11/14/2007EP1558832B1 A reamer assembly
11/14/2007EP1488071B1 Method and device for directional down-hole drilling
11/14/2007CN200975218Y Recoverable apparatus at bottom hole of casing tube well drilling
11/14/2007CN200975217Y Canula drilling machine
11/14/2007CN200975216Y Integral semi-pull-hang transporting type drilling machine foundation
11/14/2007CN200975215Y Integral well-repairing device
11/14/2007CN200975214Y Forced raising down drilling equipment
11/14/2007CN101070750A Dust-removing device for gas drilling-well
11/14/2007CN101070749A Perforating machine for drilling hole
11/13/2007CA2481847C Methods for increasing production from a wellbore
11/13/2007CA2443111C Method and apparatus for analyzing casing wear and retrieval of metallic fragments
11/13/2007CA2421137C Realtime control of a drilling system using an output from the combination of an earth model and a drilling process model
11/09/2007CA2588170A1 Impact excavation system and method with particle separation
11/08/2007WO2007126833A1 Reverse circulation pressure control method and system
11/08/2007WO2007124789A1 Method and devices for trenchless pipeline laying
11/08/2007WO2007124567A1 Downhole motor with a continuous conductive path
11/08/2007US20070256865 Orientation tool
11/08/2007US20070256863 Directional drilling control
11/08/2007US20070256860 Ice Drill
11/08/2007US20070256841 Sidetrack option for monobore casing string
11/08/2007DE102006019261A1 Drilling device, especially for injection drilling in special underground workings, has support rope as guide for backstay and is connected to flushing head and to counterweight which is movably arranged on guide mast
11/07/2007EP1702133B1 Method for drilling and lining a wellbore
11/07/2007EP1618279B1 Method of creating a borehole in an earth formation
11/07/2007CN200972531Y Track measuring target prism device for small diameter hole drilling
11/07/2007CN200971760Y Device for implementing double-gradient drilling
11/07/2007CN101067366A Air-filling well-drilling sealing device
11/07/2007CN100347398C Wellstring assembly
11/07/2007CN100347397C Steerable rotary drill bit assembly with pilot bit
11/06/2007US7290624 Method and device for drilling holes in soil or rock material
11/06/2007US7290623 Welded joints for rotary-vibratory drills having reduced stress
11/06/2007US7290621 Integrated mast and top drive for drilling rig
11/06/2007CA2327098C Extended reach tie-back system
11/01/2007WO2007124330A2 Pressure safety system for use with a dynamic annular pressure control system
11/01/2007WO2007124228A2 Edging and trenching blade
11/01/2007WO2007122003A1 Method and device for the utilization of supercritical subsurface steam in combination with supercritical thermal and hydraulic power stations
11/01/2007WO2007121510A1 Improved drilling apparatus and drive unit
11/01/2007WO2007104025A3 A failure protection apparatus for a pressure control assembly
11/01/2007US20070251728 Automated arm for positioning of drilling tools such as an iron roughneck
11/01/2007US20070251727 Reamer bit
11/01/2007US20070251726 Rotary Steerable Drilling System
11/01/2007US20070251694 Umbilical assembly, subsea system, and methods of use
10/2007
10/31/2007EP1766179B1 Enlarging and stabilising tool for a borehole
10/31/2007EP1740793B1 A telescopic conductor casing for a well installation and a method of driving same into the underground
10/31/2007CN200968198Y Telescopic compression sealing grouting device
10/31/2007CN200968178Y Multifunctional rock boring machine
10/31/2007CN200968177Y Rotary digging, jostling and enlarging drill
10/31/2007CN200968176Y Drilling machine for piling
10/31/2007CN200968175Y Well-repairing machine with wind loading stabilizing device
10/31/2007CN101065554A One trip milling system
10/31/2007CN101063401A Internal combustion fluid jet boring device
10/31/2007CN101063400A Drilling device for producing drilling column in soil and method thereof
10/31/2007CN101063399A Drilling implement for erecting a drilling pillar in the ground and method thereof
10/30/2007US7287607 Directional drilling apparatus
10/30/2007US7287606 Drilling method for enlarging a borehole using a kick sub
10/30/2007US7287605 Steerable drilling apparatus having a differential displacement side-force exerting mechanism
10/30/2007US7287604 Steerable bit assembly and methods
10/30/2007US7287603 Combined casing expansion/casing while drilling method and apparatus
10/30/2007US7287584 Anchoring device for a wellbore tool
10/30/2007US7287337 Pitch sensing in drilling machines
10/30/2007CA2338492C Whipstock
10/30/2007CA2270268C Orienting tool and method
10/25/2007WO2007121306A1 Non-metallic whipstock
10/25/2007WO2007120027A1 Device for thermo-mechanically fracturing rocks
10/25/2007US20070246263 Pressure Safety System for Use With a Dynamic Annular Pressure Control System
10/25/2007US20070246260 Edging and trenching blade
10/25/2007US20070246221 Dispersive riserless drilling fluid
10/25/2007CA2643763A1 Non-metallic whipstock
10/25/2007CA2552793A1 Earth drilling rig having electronically controlled air compressor
10/24/2007EP1847678A1 A thermic lance
10/24/2007CN200964816Y Lateral well whipstock-salvaging tool
10/24/2007CN200964795Y Submergence type double-well hydraulic drilling machine
10/24/2007CN200964794Y Slant-proof drill combination device
10/24/2007CN200964793Y Dedicated upper part for rotary drilling rig
10/24/2007CN200964788Y Rock core drilling machine
10/24/2007CN101059075A Method for forecasting slurry performance in emulating horizontal directional drilling construction and its experimental device
10/24/2007CN101059074A Underground drill for controlling underground drilling and the method
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