E21B 7 - Special methods or apparatus for drilling

Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
11/2006
11/21/2006	CA2273626C Wellbore cuttings re-cycling system
11/21/2006	CA2260448C Apparatus and methods for sealing a wellbore junction
11/16/2006	WO2006119797A1 Method for laying pipes without digging trenches
11/16/2006	US20060254827 Flexible drill string member
11/16/2006	US20060254825 Drilling assembly with a steering device for coiled-tubing operations
11/16/2006	US20060254824 Flow operated orienter
11/15/2006	EP1470316B1 Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence
11/15/2006	CN1863981A Method and device for boring holes in soil or rock
11/15/2006	CN1863980A Method and device for boring holes in soil or rock
11/14/2006	US7136795 Control method for use with a steerable drilling system
11/14/2006	US7134611 Air nozzle for pneumatic tools
11/14/2006	US7134514 Dual wall drill string assembly
11/14/2006	US7134513 Drive mechanism for boring machine
11/14/2006	US7134512 Method of downhole drilling and apparatus therefor
11/14/2006	CA2385795C Assembly and method for locating lateral wellbores
11/14/2006	CA2349223C Method and apparatus for connecting a lateral branch liner to a main well bore
11/14/2006	CA2300683C Coiled tubing drilling with supercritical carbon dioxide
11/14/2006	CA2298656C Drilling tool for down-the-hole drilling, reamer means and body element for use in the tool
11/09/2006	WO2006119294A1 Methods and systems for determining angular orientation of a drill string
11/09/2006	WO2006119022A2 Rotary steerable motor system for underground drilling
11/09/2006	WO2006118920A2 Systems and methods for managing downhole pressure
11/09/2006	WO2006118390A1 Low noise hydraulic breaker
11/09/2006	WO2006117935A1 Drilling method and device of stratum in liquid
11/09/2006	WO2005021920B1 Downhole tubular splitter assembly and method
11/09/2006	US20060249310 Whipstock kick off radius
11/09/2006	US20060249287 Steerable drilling system
11/09/2006	DE102005021216A1 Verfahren und Vorrichtungen zur grabenlosen Verlegung von Rohrleitungen Methods and apparatus for grave loose laying of pipelines
11/09/2006	CA2606428A1 Rotary steerable motor system for underground drilling
11/08/2006	EP1319115B1 Methods and apparatus for forming a lateral wellbore
11/08/2006	CN2835532Y Whipstock anchoring device
11/08/2006	CN2835522Y Pressure regulating valve for deviation control
11/08/2006	CN2835521Y Whipstock for casing sidetracking
11/08/2006	CN2835520Y Anchor rod boring directing device
11/08/2006	CN2835349Y Under-reamed device
11/08/2006	CN2835348Y Under-reamed device for foundation construction
11/08/2006	CN2835345Y Under-reamed device for building foundation construction
11/08/2006	CN2835344Y Bottom-enlarging device capable of being used together with immersed tube
11/08/2006	CN2835343Y Limiting mechanism for bottom-enlarging device for construction
11/08/2006	CN1283980C Integral optical electric axial angle encoder
11/08/2006	CN1283897C Method and system for defining serious sand sedimentation section in drilling process
11/08/2006	CN1283895C Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations
11/07/2006	US7131505 Drilling with concentric strings of casing
11/07/2006	US7131504 Pressure activated release member for an expandable drillbit
11/05/2006	CA2545765A1 Steerable drilling system
11/02/2006	WO2006116635A2 Conductor pipe string deflector and method
11/02/2006	WO2006099637A3 Rock drill and method of breaking rock
11/02/2006	US20060243492 Inner and outer motor with eccentric stabilizer
11/02/2006	US20060243487 Rotary steerable motor system for underground drilling
11/02/2006	US20060243486 Portable and directional electrocrushing drill
11/02/2006	US20060243485 Conductor pipe string deflector and method
11/02/2006	US20060243452 System for lining a section of a wellbore
11/01/2006	CN1854455A Guide rail spline oriented drilling tool
11/01/2006	CN1854454A Casing drilling method
11/01/2006	CN1282818C Drill bit advancing direction predicting method, controlling method and controlling system for horizontal well
11/01/2006	CN1282816C A drilling tool used in horizontal drilling applications
10/2006
10/31/2006	US7128170 Adjustable stabiliser for directional drilling
10/31/2006	US7128168 Reamer apparatus for ground boring machine
10/31/2006	CA2184322C Multiple lateral hydrocarbon recovery system and method
10/26/2006	WO2006112763A1 Drilling tool and method for down-the-hole drilling
10/26/2006	US20060238201 Boring tool tracking/guiding system and method with unconstrained target location geometry
10/26/2006	US20060237233 Methods of using a laser to spall and drill holes in rocks
10/25/2006	EP1442320A4 Relative drill bit direction measurement
10/25/2006	EP1354119B1 Method for rock-chiselling
10/25/2006	EP1343994B1 Apparatus and method for inserting and removing a flexible first material into a second material
10/25/2006	EP1295005B1 Milling of casing using coiled tubing
10/25/2006	EP1086291B1 Directional drilling system and apparatus
10/25/2006	CN1853029A Angle and reactive torque control device for a gerotor type motor provided with a spindle and drilling bit in a bended drill string
10/25/2006	CN1851229A Well drilling method of underground power drilling tool for geophysical prospecting
10/25/2006	CN1851228A Non-excavation underground pipeline tunnel wall tension propulsion machine
10/25/2006	CN1281845C System for carrying well equipment in the well
10/24/2006	US7124843 Bit assembly for a hammering drill
10/24/2006	US7124827 Expandable whipstock anchor assembly
10/24/2006	US7124826 Procedures and equipment for profiling and jointing of pipes
10/24/2006	US7124825 Casing wear band and method of attachment
10/24/2006	US7124821 Apparatus and method for expanding a tubular
10/19/2006	WO2006110461A2 Drilling with casing
10/19/2006	WO2006110040A1 Drilling- or service rig
10/19/2006	WO2005110020A3 Apparatus and method for modified horizontal directional drilling assembly
10/19/2006	US20060231258 Method of forming a window in a casing
10/18/2006	EP1712727A1 Method of completing a subterranean well and associated apparatus
10/18/2006	EP1711682A1 Automated drill string position survey
10/18/2006	EP1711679A1 Method, drilling machine, drill bit and bottom hole assembly for drilling by electrical discharge pulses
10/18/2006	CN1280518C Building machinery
10/18/2006	CN1280515C Hole drilling equipment and method
10/18/2006	CN1280514C Earth formation surveying method
10/17/2006	US7121340 Method and apparatus for reducing pressure in a perforating gun
10/17/2006	US7121337 Apparatus for expanding a tubular member
10/17/2006	CA2250030C Method of assaying downhole occurrences and conditions
10/12/2006	US20060225923 Drilling assembly and method for drilling a barehole into geological formations
10/12/2006	US20060225922 Vibrational heads and assemblies and uses thereof
10/11/2006	EP1709293A1 Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements
10/11/2006	EP1709281A2 Rotary vector gear for use in rotary steerable tools
10/11/2006	EP1709280A2 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
10/11/2006	EP1092077B1 Milling system for forming a window in the wall of a tubular
10/11/2006	CN2825915Y Oriented well drilling tool with guide rail and spline
10/10/2006	US7120565 Method and apparatus for determining figure
10/10/2006	US7117960 Bits for use in drilling with casting and method of making the same
10/10/2006	US7117959 Systems and methods for remotely determining and changing cutting modes during decoking
10/10/2006	US7117958 One-step directional coring or drilling system
10/10/2006	US7117957 Methods for drilling and lining a wellbore

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