E21B 7 - Special methods or apparatus for drilling

Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
12/2006
12/27/2006	CN2851503Y Hydraulic automatic anti-deflection drilling tools
12/27/2006	CN2851501Y Positioning device for whipstock
12/27/2006	CN2851500Y Reclaimable drilling completion integrated whipstock
12/27/2006	CN1884786A Fish bone type branch well drilling and completing method
12/27/2006	CN1292144C Direction control technological device for bit of horizontal screw drill machine
12/26/2006	US7154411 Reservoir management system and method
12/26/2006	US7152700 Dual wall drill string assembly
12/26/2006	US7152698 Downhole motor locking assembly and method
12/26/2006	US7152696 Method and control system for directional drilling
12/21/2006	WO2006133706A1 A holding device for holding pull rods in a pulling tool as well as use thereof
12/21/2006	WO2005084376A3 Rotating systems associated with drill pipe
12/21/2006	US20060285436 Intelligent system for use in subterranean drilling applications
12/21/2006	US20060283635 Downhole steering tool having a non-rotating bendable section
12/21/2006	US20060283633 Method and apparatus for conducting earth borehole operations using coiled casing
12/21/2006	DE102005026921A1 Hammer-drilling arrangement for drilling purposes comprises a hammer-drill head, a flushing medium supply unit, a drill pipe with a conveying channel for the drillings and an overlaying pipe connected to a drilling crown
12/20/2006	EP1734206A1 Method for pre-attaching-fixing anchor bolt, and method and device for excavating anchor bolt burying hole
12/20/2006	EP1733116A1 Device for a drilling tool
12/20/2006	CN2849116Y Mechanical fixed solid slope guiding device
12/20/2006	CN2849115Y Rotary guiding well drilling tool
12/19/2006	US7151376 Bore location system
12/19/2006	US7150329 Auto-extending/retracting electrically isolated conductors in a segmented drill string
12/19/2006	US7150324 Method and apparatus for riserless drilling
12/19/2006	CA2322693C An arrangement for drilling slots
12/14/2006	WO2006131339A1 Dth-hammer drilling device and overburden drilling method
12/14/2006	WO2006130889A1 Method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material
12/14/2006	WO2005103438A3 Drilling method and assembly for drilling large-diameter holes
12/14/2006	US20060278418 Modular self-propelled drilling apparatus
12/14/2006	CA2654785A1 Dth-hammer drilling device and overburden drilling method
12/14/2006	CA2621350A1 Pipes, systems, and methods for transporting fluids
12/13/2006	EP1731708A1 Sledgehammer drilling apparatus and method
12/13/2006	EP1730386A2 Rotating systems associated with drill pipe
12/13/2006	EP1730382A1 Method and device for drilling holes in the ground or in rock
12/13/2006	EP1339939B1 A drilling tool used in horizontal drilling applications
12/13/2006	EP1272728B1 Apparatus and method for directional drilling
12/13/2006	CN2846703Y Antomatic anti-inclination well drilling tool
12/13/2006	CN2846701Y Pulse oscillation generator for drilling well
12/13/2006	CN2846700Y Sleeve pressurizing device
12/13/2006	CN1878928A Method of reducing sand production from a wellbore
12/13/2006	CN1877074A Down-hole multiple radialized holes ultra-deep boring device by abrasive water jet
12/13/2006	CN1877073A Side wall boring process for pipeline, water source well, geothermal well and petroleum extraction well, and boring machine therefor
12/13/2006	CN1289785C Method for solving air screw drill runaway problem and pneumatic speed limiting valve device
12/13/2006	CN1289780C Packer for hydraulic underreamer
12/12/2006	US7147068 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
12/12/2006	US7147066 Steerable drilling system and method
12/12/2006	US7147065 Connection design and sonde housing assembly for a directional drill
12/12/2006	US7147064 Laser spectroscopy/chromatography drill bit and methods
12/12/2006	CA2434378C Easy hold power auger
12/12/2006	CA2388241C Underreamer and method of use
12/12/2006	CA2356144C Method and apparatus for expanding an isolation tubing
12/08/2006	CA2509300A1 Modular self-propelled drillling apparatus
12/07/2006	WO2006129050A1 Method and apparatus for generating fluid pressure pulses
12/07/2006	WO2005050714A3 High temperature electronic devices
12/07/2006	DE102004059711A1 Boring device consists of casing tubes with boring chisel located in last casing tube as well as cutting spindle that facilitates driving of the casing tube into the ground
12/06/2006	CN2844394Y Mechanical rotary joint for extracting oil well
12/06/2006	CN1875167A 流体喷射钻具 Drilling fluid jet
12/06/2006	CN1288323C Jet-flow perforating device
12/06/2006	CA2549537A1 Intelligent system for use in subterranean drilling applications
12/05/2006	US7143846 Method for drilling and drilling apparatus to enable reverse circulation
12/05/2006	US7143844 Earth penetrating apparatus and method employing radar imaging and rate sensing
12/05/2006	CA2220920C Method and apparatus for blasting hard rock
11/2006
11/30/2006	WO2006125948A1 Apparatus and method for driving casing or conductor pipe
11/30/2006	WO2006125373A1 A intermittent creeping push-type driller
11/30/2006	WO2006105013A3 Multiple pulsejet boring device
11/30/2006	US20060269361 Apparatus for on-grade boring
11/30/2006	US20060266555 Steerable drilling system and method
11/30/2006	US20060266554 System and method for making a hole in an object
11/30/2006	US20060266551 Shaped Charges for Creating Enhanced Perforation Tunnel in a Well Formation
11/30/2006	US20060266531 Sealed branch wellbore transition joint
11/30/2006	US20060266517 Method for drilling with improved fluid collection pattern
11/30/2006	DE102005024572A1 Vorrichtung zum Überbohren von erdverlegten Leitungen Apparatus for drilling of underground lines
11/30/2006	DE102004039865B4 Bohrgerät Drill
11/30/2006	CA2609227A1 Apparatus and method for driving casing or conductor pipe
11/29/2006	EP1726187A2 Extracting and processing hydrocarbon-bearing formations
11/29/2006	EP1725736A1 Single pass drilling apparatus, use a one -piece drill bit, method and rock bolt for single pass rock bolting.
11/29/2006	EP1725735A1 Boring system and method therefor
11/29/2006	EP1654436B1 Method for heat drilling holes in ice and device for carrying out said method
11/29/2006	CN1871408A Nozzle unit and method for excavating a hole in an object
11/29/2006	CN1869398A Fracture method for horizontal well
11/28/2006	US7141901 Downhole torque-generating and generator combination apparatus
11/28/2006	US7140456 Easy hold power auger
11/28/2006	US7140455 Valve method for drilling with casing using pressurized drilling fluid
11/28/2006	US7140445 Method and apparatus for drilling with casing
11/28/2006	US7140444 Downhole cutting tool and method
11/28/2006	US7140430 Expander for expanding a tubular element
11/28/2006	CA2448149C Sprung member and actuator for downhole tools
11/28/2006	CA2427034C Expanding wellbore junction
11/23/2006	WO2006124028A1 Method of drilling a stable borehole
11/23/2006	US20060263215 Roll stabilised unit
11/23/2006	US20060260843 Methods and systems for determining angular orientation of a drill string
11/23/2006	DE102005023715A1 Process and assembly to cut a duct within an existing wall by holographic laser beam or focused ultrasonic emitter
11/23/2006	CA2621655A1 Method of drilling a stable borehole
11/22/2006	EP1570150B1 One-step directional coring or drilling system
11/22/2006	EP1350003B1 Method of drilling and operating a subsea well
11/22/2006	CN2839542Y Boring machine for foundation boring pile construction
11/22/2006	CN1865650A Construction method for push pipe by cooperation of horizontal auger driller and horizontal directional driller
11/22/2006	CN1285825C Radiation well horizontal radiation pipe full hydraulic construction equipment
11/21/2006	US7137451 Controlling and/or testing a hydrocarbon production system
11/21/2006	CA2547036A1 Roll stabilished unit
11/21/2006	CA2405993C Whipstock assembly
11/21/2006	CA2292639C An erectable arm assembly for use in boreholes

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