E21B 7 - Special methods or apparatus for drilling

Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
11/2009
11/25/2009	CN101586441A High-pressure water jet system and method for drilling and enlarging holes on coal bed
11/25/2009	CN101586440A Oriented rotational guide drilling tool
11/24/2009	US7621351 Reaming tool suitable for running on casing or liner
11/24/2009	US7621343 Steerable drilling system and method
11/19/2009	WO2009138558A1 Method for determining dead zone of valve
11/19/2009	WO2009138556A1 Rotating device
11/19/2009	WO2009137923A1 Hydraulic drilling method with penetration control
11/19/2009	WO2009075777A3 Method and system for delineating a second wellbore from a first wellbore
11/19/2009	US20090283329 Sonic latch mechanism
11/19/2009	US20090283328 Reamer with polycrystalline diamond compact inserts
11/19/2009	US20090283326 Sonic drill bit for core sampling
11/19/2009	US20090283325 Polycrystalline Diamond Compact Drill Bit Blade Design and Nozzle Placement
11/19/2009	US20090283322 Drilling String Back off Sub Apparatus and Method for Making and Using Same
11/19/2009	US20090283273 Well construction and completion
11/19/2009	CA2824828A1 A drilling rig and a method for moving a drilling rig
11/19/2009	CA2724442A1 A drilling rig and a method for moving a drilling rig
11/19/2009	CA2724182A1 Hydraulic drilling method with penetration control
11/19/2009	CA2720282A1 Rotating device
11/18/2009	EP2118437A2 Reservoir stimulation while running casing related applications
11/18/2009	CN201347725Y Non-rotating outer sleeve stabilizing device of rotary steerable drilling tool
11/18/2009	CN201347721Y Flexible shaft passing through measuring chamber
11/18/2009	CN201347720Y Wet dust removal device for rotary drilling machine
11/18/2009	CN101581202A Upper feed pipe nipple device of riser pipe under simulated injection method
11/18/2009	CN101581197A Design method for optimization of matching between pile hammer and riser pipe
11/18/2009	CN100560930C Yield increasing technique for fixed point deep penetration horizontal drilling in oil-water well oil layer
11/17/2009	US7617886 Fluid-actuated hammer bit
11/17/2009	US7617884 Drill slide for rock drilling apparatus
11/17/2009	CA2573888C Steerable underreamer/stabilizer assembly and method
11/12/2009	WO2009137537A2 Signal operated tools for milling, drilling, and/or fishing operations
11/12/2009	WO2009136843A1 Rock drilling device
11/12/2009	WO2009136841A1 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device
11/12/2009	WO2009088571A4 Counterbalance enabled power generator for horizontal directional drilling systems
11/12/2009	DE102007025917B4 Verfahren und Vorrichtung zur Überprüfung der Umhüllung einer Rohrleitung während des Einzugs in ein mit Flüssigkeit gefülltes Bohrloch Method and apparatus for checking the serving of a pipeline during feeding in a fluid-filled borehole
11/12/2009	CA2722612A1 Signal operated tools for milling, drilling, and/or fishing operations
11/11/2009	EP2115338A1 Method and device for laying pipes in the ground
11/11/2009	EP1784553B1 Apparatus and method for joining a pipe conduit to a drilling device, expanding device, or feeding device
11/11/2009	CN201343993Y Drilling rig with water spraying device
11/11/2009	CN101575950A Riser pipe shoe
11/11/2009	CN101575943A Hydraulic high-speed drill
11/11/2009	CN101575851A Two-way cement mixing pile machine
11/10/2009	US7614461 Lubricated pilot tubes for use with auger boring machine pilot steering system and use thereof
11/05/2009	WO2009135119A2 Modular hybrid drill bit
11/05/2009	WO2009134842A2 Steerable bit
11/05/2009	WO2009134125A1 Floating offshore structure for hydrocarbon production
11/05/2009	WO2009132414A1 Drive shaft assembly for a downhole motor
11/05/2009	WO2009108940A3 Underground sequestration system and method
11/05/2009	WO2009105470A3 Devices and methods for horizontal directional drilling with a boring tool library
11/05/2009	WO2009102578A3 Method and system of monitoring rotational time of rotatable equipment
11/05/2009	WO2009085615A9 Borehole imaging and orientation of downhole tools
11/05/2009	WO2009055380A4 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production
11/05/2009	US20090272617 Friction shaft coupling with perpendicular adjustment
11/05/2009	US20090272578 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
11/05/2009	US20090272547 Method and apparatus for a downhole excavation in a wellbore
11/05/2009	US20090272537 Aluminum riser assembly
11/04/2009	EP2113632A1 Attachment device for forming a fluid supply
11/03/2009	US7610971 One trip milling system and method
11/03/2009	CA2537333C Expandable tubulars for use in a wellbore
11/03/2009	CA2452903C Apparatus and method of drilling with casing
11/03/2009	CA2379806C Rotary seal for directional drilling tools
11/03/2009	CA2308845C Combination whipstock and anchor assembly
10/2009
10/29/2009	WO2009106863A3 A method for facilitating construction of a drilling rig
10/29/2009	WO2009055381A4 Apparatus and method for conveyance and control of a high pressure hose in jet drilling operations
10/29/2009	US20090266618 Rotating drill pipe protector attachment and fastener assembly
10/29/2009	US20090266617 Sleeve arrangement
10/29/2009	US20090266614 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
10/29/2009	US20090266612 Vibrating downhole tool
10/29/2009	US20090266544 Signal operated tools for milling, drilling, and/or fishing operations
10/29/2009	DE102008020691A1 Bearing producing method for pipe drive, involves using influenced press forces by pipe drive to generate sufficient bearing force, in which lateral pressure is included by lateral pressure plates and carried off into lower ground by anchor
10/28/2009	CN101566045A Structure design method for guiding type rotary steering drilling tool
10/28/2009	CN101566044A Automatic vertical well drilling tool utilizing aerodynamics
10/28/2009	CN101566043A Cast-in-situ cylinder pile rotary drilling rig and piling method thereof
10/28/2009	CN101566042A Heavy hydraulic walking chassis
10/27/2009	US7607496 Drilling apparatus and system for drilling wells
10/27/2009	US7607494 Earth penetrating apparatus and method employing radar imaging and rate sensing
10/27/2009	US7607232 Vegetation cutting device
10/22/2009	WO2009129386A2 Steering device for downhole tools
10/22/2009	WO2009129116A2 Combination whipstock and seal bore diverter system
10/22/2009	WO2009064941A3 Tensioner anti-rotation device
10/22/2009	US20090260892 Drill rod, drill bit, and drilling tool
10/22/2009	US20090260884 Steering Device for Downhole Tools
10/22/2009	US20090260882 Braking devices and methods for use in drilling operations
10/22/2009	US20090260881 Formation Dip Geo-Steering Method
10/22/2009	US20090260878 Method for drilling wells in close relationship using magnetic ranging while drilling
10/22/2009	US20090260818 Microwave-Based Downhole Activation Method For Wellbore Consolidation Applications
10/21/2009	CN201330565Y Semi-trailing drilling platform for oil drilling and repairing equipment
10/21/2009	CN201330560Y Column type backplane jumbolter
10/21/2009	CN201329804Y Crawler-type electric well drill chassis
10/21/2009	CN201329528Y Device for polishing partial wall of exploration bore
10/20/2009	US7605112 adding a two-phase polymer system of a water soluble copolymer of vinyl pyrrolidone and dimethylaminopropyl methacrylamide and in-situ formed water-insoluble particles of such copolymer into a drilling well fluid under aqueous, high temperature, high salinity conditions
10/20/2009	CA2393754C Drilling bit for drilling while running casing
10/15/2009	WO2009126429A2 Kinetic energy harvesting in a drill string
10/15/2009	WO2009082453A3 Pulse rate of penetration enhancement device and method
10/15/2009	WO2009077715A3 Stimulation through fracturing while drilling
10/15/2009	US20090255733 Lead the Bit Rotary Steerable System
10/15/2009	US20090255732 Method and apparatus for lateral well drilling with enhanced capability for clearing cuttings and other particles
10/15/2009	US20090255730 Establishing Positions of Locating Field Detectors and Path Mapping in Underground Boring Tool Applications
10/15/2009	US20090255728 Wireline System
10/15/2009	US20090255701 Rod assembly driver
10/15/2009	US20090255689 Method of radially expanding a tubular element
10/15/2009	US20090255664 Combination whipstock and seal bore diverter system

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