E21B 7 - Special methods or apparatus for drilling

Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
10/2011
10/27/2011	US20110259642 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements and related methods
10/27/2011	US20110259641 Apparatus and Method for Modifying the Sidewalls of a Borehole
10/27/2011	US20110259639 Downhole Axial Flux Generator
10/27/2011	US20110259608 Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods
10/27/2011	US20110259606 Casing shoes having drillable and non-drillable cutting elements in different regions and related methods
10/27/2011	US20110259605 Casing and liner drilling shoes having selected profile geometries, and related methods
10/27/2011	US20110259604 Casing and liner drilling shoes having integrated operational components, and related methods
10/26/2011	EP2381062A2 Rotary steerable tool
10/26/2011	EP2381036A1 Drill
10/26/2011	EP2379836A1 Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies
10/26/2011	EP2379835A1 Rock drilling in great depths by thermal fragmentation using highly exothermic reactions evolving in the environment of a water-based drilling fluid
10/26/2011	CN202017466U 沙漠修井机 Desert workover
10/26/2011	CN202017450U Novel vehicle-mounted auger drill
10/26/2011	CN202016506U Trailer chassis with downhole drill
10/26/2011	CN102226413A Gas extraction method of cross hole drilling area of gas discharge laneway
10/26/2011	CN102226396A Non-explosive mining method by excavation, artificial group-column reconstruction, long-hole caving and subsequent filling
10/26/2011	CN102226378A Reinforced riser pipe combined structure and construction method thereof
10/26/2011	CN102226375A Method for forming easy-to-collapse drilled hole
10/26/2011	CN102226342A Multi-functional piling machine for jet grouting pile-sinking
10/25/2011	CA2749221A1 Thrust bearing assembly for a wireline-operated directional core barrel drill
10/23/2011	CA2736781A1 Rotary steerable tool
10/20/2011	WO2011130659A1 Unconditionally stable floating offshore platforms
10/20/2011	WO2011130350A2 Cementing whipstock apparatus and methods
10/20/2011	WO2011130230A1 Transport and analysis device for use in a borehole
10/20/2011	WO2011130159A2 Methods and systems for drilling
10/20/2011	WO2011130123A2 Anchor system and method for anchoring a tool with a positional bias
10/20/2011	WO2011129841A1 Latching configuration for a microtunneling apparatus
10/20/2011	WO2011082306A3 Side-tracking system and related methods
10/20/2011	US20110253454 Mechanically modified filter cake
10/20/2011	US20110253453 Coiled tubing orienter tool with differential lead screw drive
10/20/2011	US20110253451 Borehole Impact Rock Breaker
10/20/2011	US20110253450 Cutting device for producing vertically running trenches in the ground
10/20/2011	US20110253449 Methods of preloading a sonic drill head and methods of drilling using the same
10/20/2011	US20110253446 Apparatus and Methods for Estimating Tool Inclination Using Bit-Based Gamma Ray Sensors
10/20/2011	US20110253445 System and Method for Managing Heave Pressure from a Floating Rig
10/20/2011	US20110253387 Cementing whipstock apparatus and methods
10/20/2011	DE102010015466A1 Earth drilling fixture has drive device and drill pipes, which has connected linkage shots and is formed as hollow for transport of drilling liquid
10/20/2011	DE102010015465A1 Erdbohrvorrichtung Boring apparatus
10/20/2011	CA2796454A1 Cementing whipstock apparatus and methods
10/20/2011	CA2794739A1 Methods and systems for drilling
10/19/2011	EP2378055A1 A method for the reconstruction of wells through the removal of the old casing by using a single reverse-circulation perforation and relative device
10/19/2011	EP2378054A1 Safety device for a construction machine
10/19/2011	EP2378053A1 Construction machine with computer unit for determining an adjustment range
10/19/2011	EP2378001A1 Soil cultivation device
10/19/2011	EP2153009B1 Method and apparatus for establishing a manual governor control setting in an electro-hydraulic system
10/19/2011	CN202012309U Drill pipe placing mechanism of directional drilling machine
10/19/2011	CN202012300U Novel pressure balance workover rig
10/19/2011	CN202012293U Self-adjustment balancing auxiliary device for self-propelled workover rig
10/19/2011	CN202012292U Safe automatic brake device for drilling and workover equipment in oil field
10/19/2011	CN202012291U Compound box for vehicle-mounted drilling and workover rigs
10/19/2011	CN102220863A Valve-controlled automatic confluence hydraulic system for horizontal directional drilling machine
10/19/2011	CN102220862A Safety device for a construction machine
10/19/2011	CN102220843A Turbo type negative-pressure pulse nozzle
10/19/2011	CN102220842A Radial high-pressure water jetting composite well with ultrashort radius as well as well completion tool and technology
10/19/2011	CN102220841A Submarine sampling drilling rig
10/19/2011	CN102220840A Drill boom of multi-directional driller
10/19/2011	CN102220839A Construction machine having computer unit for determining adjusting range
10/19/2011	CN102220838A Soil cultivation device
10/19/2011	CN102220759A New drilling (punching) bored concrete pile construction method
10/19/2011	CN101120155B Integrated magnetic ranging tool
10/18/2011	US8037950 Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods
10/18/2011	CA2684428C One trip milling system
10/18/2011	CA2537816C Device and method of lining a wellbore
10/18/2011	CA2437141C Apparatus and methods for anchoring and orienting equipment in well casing
10/13/2011	WO2011126844A2 Mobile offshore drilling unit
10/13/2011	WO2011126795A2 Horizontal waterjet drilling method
10/13/2011	WO2011126760A2 Bending of a shaft of a steerable borehole drilling tool
10/13/2011	WO2011126359A2 Method for introducing an elongated element, in particular geo-thermal heat exchanger, into the soil
10/13/2011	CA2794510A1 Bending of a shaft of a steerable borehole drilling tool
10/13/2011	CA2794324A1 Horizontal waterjet drilling method
10/12/2011	EP2373866A1 Trenchless ducting apparatus frame
10/12/2011	EP1532344B1 Tool apparatus, system and method of use
10/12/2011	CN202007640U Fractured formation corer driven by spiral drilling rig
10/12/2011	CN202007630U Resistance-reducing and torsion-reducing device
10/12/2011	CN102213094A Construction system and construction method for mine rock drivage
10/12/2011	CN102213077A Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement
10/12/2011	CN102213076A Vertical shaft type drilling machine with long feeding travel
10/11/2011	US8033335 Offshore universal riser system
10/11/2011	CA2539266C Managed pressure drilling
10/11/2011	CA2538196C Deep water drilling with casing
10/06/2011	WO2011123438A1 Method for maintaining wellbore pressure
10/06/2011	WO2011120697A2 Horizontal drilling device
10/06/2011	WO2011120696A2 Method for operating a horizontal drilling device and horizontal drilling device
10/06/2011	WO2011120692A2 Method for producing a horizontally drilled bore hole in the ground and horizontal drilling device
10/06/2011	WO2011084233A3 Apparatus and method for reaming a wellbore during the installation of a tubular string
10/06/2011	US20110240369 Downhole Steerable Hammer Element
10/06/2011	US20110240368 Bending of a shaft of a steerable borehole drilling tool
10/06/2011	US20110240367 Milling Tool for Establishing Openings in Wellbore Obstructions
10/06/2011	US20110240366 Inner Bit Disposed within an Outer Bit
10/06/2011	US20110240282 Well assembly with recesses facilitating branch wellbore creation
10/06/2011	DE102010013725A1 Verfahren zum Erstellen einer Horizontalbohrung im Erdreich und Horizontalbohrvorrichtung A method of creating a horizontal well in the ground and horizontal drilling
10/06/2011	DE102010013724A1 Horizontalbohrvorrichtung Horizontal drilling
10/06/2011	DE102010013723A1 Verfahren zum Betrieb einer Horizontalbohrvorrichtung und Horizontalbohrvorrichtung Method for operating a horizontal drilling and horizontal drilling
10/06/2011	CA2794755A1 Method for maintaining wellbore pressure
10/06/2011	CA2793798A1 Downhole tool having a friction stirred surface region
10/05/2011	EP2370720A1 Trenchless ducting apparatus frame
10/05/2011	EP2370657A1 Trenchless ducting apparatus frame
10/05/2011	CN202001411U Power head and walk interlocking device of rotary drilling rig
10/05/2011	CN202000945U Slurry check ring for rotary control head
10/05/2011	CN202000892U Multi-functional deep-water undersea pump drilling system

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