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)
11/2005
11/08/2005US6962214 Rotary seal for directional drilling tools
11/08/2005US6962030 Method and apparatus for interconnected, rolling rig and oilfield building(s)
11/03/2005WO2005103547A1 Tube connector and device for production of a tube connector
11/03/2005WO2005103435A1 Enlarging and stabilising tool for a borehole and method for the use thereof
11/03/2005WO2005103434A1 Elongated coil assembly for electromagnetic borehole surveying
11/03/2005US20050244229 Method and apparatus for replacement of underground pipe
11/03/2005US20050242818 Bore location system
11/03/2005US20050241859 Bedrock drilling and excavating apparatus
11/03/2005US20050241858 Apparatus and method for drilling and reaming a borehole
11/03/2005US20050241857 Method to transport and operate a small footprint tower to reduce environmental impact
11/03/2005US20050241856 Underreaming and stabilizing tool and method for its use
11/03/2005US20050241855 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
11/03/2005US20050241834 Tubing/casing connection for U-tube wells
11/03/2005CA2505667A1 Tubing/casing connection for u-tube wells
11/02/2005EP1373675B1 Method for drilling and drilling apparatus
11/02/2005CN2737927Y Non-liquid circulating fast well drilling machine
11/02/2005CN1690358A Method and apparatus for reducing pressure in a perforating gun
11/01/2005US6961251 Waveform independent high frequency power system
11/01/2005US6959774 Drilling apparatus
11/01/2005US6959772 Self-penetrating soil exploration device and associated methods
11/01/2005US6959770 Portable drilling apparatus
11/01/2005CA2278932C Tool for making an opening in a tubular in a wellbore
11/01/2005CA2120486C Method and apparatus for locating and re-entering one or more horizontal wells using mandrel means
11/01/2005CA2120365C Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks
10/2005
10/27/2005WO2005100734A1 System and method for directional drilling utilizing clutch assembly
10/27/2005WO2005100732A1 A telescopic conductor casing for a well installation and a method of driving same into the underground
10/27/2005WO2005099424A2 Rotary vector gear for use in rotary steerable tools
10/27/2005WO2005080742B1 Casing and liner drilling bits, cutting elements therefor, and methods of use
10/27/2005WO2005031913A3 Antenna system
10/27/2005US20050236190 Acoustic flow pulsing apparatus and method for drill string
10/27/2005US20050236189 Coiled tubing directional drilling apparatus
10/27/2005US20050236188 Systems and methods for remotely determining and changing cutting modes during decoking
10/27/2005US20050236187 Drilling with casing
10/27/2005US20050236186 Boring tool control using remote locator
10/27/2005US20050236183 Method and Apparatus for Reducing Pressure in a Perforating Gun
10/27/2005DE102004033566B3 System for tensioning pipe sections to form pipe run has linear tensioning drive parallel to pipe run with one side of drive supported on adapter and other side supported on traction element via at least one holding element
10/27/2005CA2562891A1 A telescopic conductor casing for a well installation and a method of driving same into the underground
10/27/2005CA2561036A1 System and method for directional drilling utilizing clutch assembly
10/26/2005EP1589187A1 Bedrock drilling and excavating apparatus
10/26/2005EP1588016A1 Wellstring assembly
10/26/2005EP1588015A2 Apparatus and methods for drilling a wellbore using casing
10/26/2005EP0901560B1 Apparatus and a method for drilling boreholes
10/25/2005US6957707 Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence
10/25/2005CA2487182C Hydraulic underreamer and sections for use therein
10/25/2005CA2411363C Apparatus and method to complete a multilateral junction
10/20/2005WO2005098195A1 Equipment and procedure of coupling socket pipe sections for trenchless laying
10/20/2005WO2005098194A1 Device for a drilling tool
10/20/2005WO2005098193A1 New untraditional tunnel boring technique for all soil types
10/20/2005US20050230153 Device for simulataneously casing a hole while drilling
10/20/2005US20050230152 Suspended abrasive waterjet hole drilling system and method
10/20/2005US20050230151 Apparatus and method for opening and closing lateral boreholes
10/20/2005US20050230104 Apparatus for expanding a tubular member
10/20/2005US20050230103 Apparatus for expanding a tubular member
10/20/2005US20050230102 Apparatus for expanding a tubular member
10/20/2005US20050230101 Method and apparatus to vibrate a downhole component
10/20/2005US20050230098 Energized slip ring assembly
10/20/2005DE202005012724U1 Drop hammer drilling device, especially for overlap drilling, has overlap tube connected to drilling crown and casing tube between hammer and overlap tube that is preferably closed at bottom
10/20/2005DE202005012722U1 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
10/19/2005CN2734973Y Light rig for petroleum and geological exploration
10/19/2005CN1683743A Multiple head screw drilling and milling machine
10/18/2005US6955234 Auger bit
10/18/2005US6955232 Equipment for drilling vertical boreholes
10/18/2005US6955231 Tool for changing the drilling direction while drilling
10/18/2005US6955219 Earth loop installation with sonic drilling
10/18/2005CA2487169C Hydraulic underreamer and sections for use therein
10/18/2005CA2221301C Adjustable stabilizer for directional drilling
10/18/2005CA2190260C Whipstock and method for setting such a whipstock
10/18/2005CA2156987C Diverter and method for running a diverter
10/13/2005WO2005095752A1 Method and device for drilling holes in the ground or in rock
10/13/2005WO2005095751A1 Modular design for downhole ecd-management devices and related methods
10/13/2005US20050224258 Apparatus and methods for powering downhole electrical devices
10/13/2005US20050224225 Apparatus for expanding a tubular member
10/13/2005DE102004014134A1 Laying gas or single or multiphase liquid flow pipelines over larger distances without trenches involves passing prefabricated production pipe runs through shafts into pilot sections and connecting them at already installed shafts
10/13/2005CA2560829A1 Method and device for drilling holes in the ground or in rock
10/12/2005EP1583886A2 Isolated electrical connection in a drill string
10/12/2005EP1157187B1 Moulten bath drilling method
10/12/2005CN2732974Y Down-the-hole drill
10/12/2005CN1682007A Drilling method
10/12/2005CN1222677C Method for steering drilling head and rotation steerable drilling system
10/12/2005CN1222676C Rotary steering drilling system and method
10/11/2005US6953306 Method of accurate trenchless installation of underground pipe
10/11/2005US6953305 Bundle of pipes and method for parallel arrangement of pipes according to a bore and swivel method
10/06/2005US20050217899 Cutting structure based hydraulics
10/06/2005US20050217896 Adaptive borehole assembly visualization in a three-dimensional scene
10/06/2005US20050217858 Apparatus and method of drilling with casing
10/06/2005DE10344353B4 Bohrvorrichtung und Verfahren zum Verdrängungsbohren im Boden Drilling apparatus and method for displacement drilling in the ground
10/06/2005DE102004026234B3 Hole drilling system forming enlarged chamber at bottom of hole in ground for concrete pile has tube with boring crown at bottom end and fixed and swinging side arms for enlarging bore
10/06/2005CA2558424A1 Extracting and processing hydrocarbon-bearing formations
10/05/2005EP1582274A2 Procedures and equipment for profiling and jointing of pipes
10/05/2005CN2731064Y Deflection guider capable of being taking out
10/05/2005CN1678812A Tool apparatus, system and method of use
10/05/2005CN1678432A Sonic drill
10/05/2005CN1676880A Rock salt deposit horizontal chamber type oil-gas depot and its building method
10/05/2005CN1676862A Mechanical automatic vertical drilling tool
10/04/2005US6951257 Drilling mast with movable and fixed unscrewing vice
10/04/2005CA2356148C Profile formation on a tube
10/04/2005CA2190798C Shaft alignment
09/2005
09/30/2005CA2502800A1 Enhancement of flow rates through porous media
09/29/2005WO2005090876A1 Blade assembly especially for an ice auger or like
09/29/2005WO2005090750A1 Method and apparatus and program storage device adapted for automatic drill string design based on wellbore geometry and trajectory requirements
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