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)
06/2010
06/02/2010CN101718173A Petroleum multilateral well solid expandable tubular (SET) bifurcation structure and construction method
06/02/2010CN101718172A Underground branching device for multi-branch well
06/02/2010CN101718171A Matching method of well completion of laterally-drilling horizontal well
06/02/2010CN101718170A Performing six-grade branch well system tool
06/02/2010CN101718169A Method for implementing six-stage multilateral well completion by posterior inferior three-way branching mechanism
06/02/2010CN101718168A Travelling mechanism applicable to device for rebuilding well head with fire of oil and gas well
06/02/2010CN101718167A Check valve device installed on well out of control
06/01/2010CA2560461C Modular design for downhole ecd-management devices and related methods
06/01/2010CA2460688C Wellbore recovery operation
05/2010
05/27/2010WO2010059536A2 Modifying expansion forces by adding compression
05/27/2010WO2010059535A2 Enhanced jack for drawing a mandrel
05/27/2010WO2010027866A3 Pulsed electric rock drilling apparatus with non-rotating bit and directional control
05/27/2010US20100129159 Device and method for suppressing vortex-induced vibrations
05/27/2010US20100126778 Cutter assembly for a raise boring reamer
05/27/2010US20100126776 Subsea Drilling With Casing
05/27/2010US20100126775 Helical chisel insert for rock bits
05/27/2010US20100126774 Valve-controlled downhole motor
05/27/2010US20100126773 Drilling apparatus and system for drilling wells
05/27/2010US20100126772 Hydro-percussive mechanisims for drilling systems
05/27/2010US20100126771 Methods and Apparatus For Controlling Cutting Ribbons During A Drilling Operation
05/27/2010US20100126770 Non-Azimuthal and Azimuthal Formation Evaluation Measurement in a Slowly Rotating Housing
05/27/2010US20100126769 Method of modifying drilling pattern, rock drilling rig, and software product
05/27/2010DE102008056262A1 Drilling goods e.g. drilling cuttings, extracting device for use during producing and filling boreholes for forming casting pit, has container, where opening is formed at upper side of container and permits penetration of drilling rod
05/26/2010EP2188484A1 System and method for controlling a drilling system for drilling a borehole in an earth formation
05/26/2010EP2188483A1 System and method for directionally drilling a borehole with a rotary drilling system
05/26/2010CN201486579U Drilling anchor rod hole positioning device
05/26/2010CN201486549U Micro-spherical hydraulic geolock
05/26/2010CN201486512U Blowout plug for oblique borehole protection construction
05/26/2010CN201486469U Anchoring device of trenchless directional drilling machine
05/26/2010CN201486468U Friction reduction device for underground horizontal drilling machine of oil-water well
05/26/2010CN201486467U Fully hydraulic top-drive truck-mounted drilling rig
05/26/2010CN201486466U Trestle column type double-arrangement hydraulic outburst-prevention drill
05/26/2010CN1952343B Mechanical self-excited interactive hydraulic pulse drill bit pup joint
05/26/2010CN1952342B Drill bit with pulse generation cavity
05/26/2010CN101715505A Arrangement for employing drill steel centralizer travelling on feed beam of rock drill machine
05/26/2010CN101713602A Method for embedding ground heat exchanger of ground source heat pump by high-pressure jet grouting
05/26/2010CN101713279A Deviation prevention and fast drilling technology of eccentric drilling tool assembly
05/26/2010CN101713278A Drilling pouring pile hole formation one-pile double-machine construction method
05/25/2010US7721826 Downhole jack assembly sensor
05/25/2010US7721825 Portable concrete boring machine
05/25/2010US7721823 Moveable blades and bearing pads
05/25/2010US7721816 Drilling/bolting machine having a manual operator input device with enable switch and related methods
05/25/2010CA2601568C Rock drill and method of breaking rock
05/25/2010CA2527063C Running/retrieval tool
05/20/2010WO2010057221A2 Subsea drilling with casing
05/20/2010WO2009146895A3 Drill head
05/20/2010WO2009090421A3 Method and apparatus for drilling auxiliary holes
05/20/2010WO2008107798A3 Heating device for passage through subterranean asphalt and method of use
05/20/2010US20100122850 Systems and methods for protecting drill blades in high speed turbine drills
05/20/2010US20100122849 System and method for preventing slippage and rotation of component along a tubular shaft
05/20/2010US20100122847 Methods for visualizing distances between wellbore and formation boundaries
05/20/2010US20100122846 Boring green-hydro, cryo vertical drilling
05/20/2010CA2744047A1 Subsea drilling with casing
05/19/2010CN201474711U Movable anchor block for fixing drilling machine
05/19/2010CN201474680U Directional perforating gun for inclined shaft
05/19/2010CN201474673U Oil-producing pipe column for sectional water control of horizontal well
05/19/2010CN201474610U Injection rock excitation device of rotary drilling rig
05/19/2010CN201474609U Runner wagon type drilling rod heave compensation device for floating drilling platform
05/19/2010CN201474608U Coal-bed-gas production-increase and gas water-inrush-prevention horizontal well
05/19/2010CN201474607U Double-power well servicing rig
05/19/2010CN201474606U Device for transportation and installation of derrick hoisting hydraulic cylinder
05/19/2010CN201474605U Power takeoff device of hydraulic disc type brake power source for oil field reaming equipment
05/19/2010CN201474604U Hydraulic disc type braking power source device
05/19/2010CN201474603U Self-propelling electric workover rig
05/19/2010CN201474602U Prestressed pipe pile perforated pile-driving machine
05/19/2010CN201474601U Drilling tool for eliminating negative soil squeezing effect of piles
05/19/2010CN201474600U Traction device for miniature drilling machine
05/19/2010CN101709625A Vertical drilling scopperil eccentric slope-correcting method
05/19/2010CN101709624A Automatic loading shotcrete machine for coal mine
05/19/2010CN101709623A Integral coal mine drilling machine hydraulic system capable of satisfying multiple drilling modes
05/19/2010CN101709622A Novel drilling machine
05/19/2010CN101029559B Long-spiral replaceable and extruded borehole construction
05/18/2010US7717472 Method of locking tubular components in end to end relation
05/18/2010US7717197 Apparatus for keeping a down hole drilling tool vertically aligned
05/18/2010US7717195 Auger stabilizer
05/18/2010US7717194 Borehole drilling control system, method and apparatus
05/14/2010WO2010053812A2 Control package container
05/14/2010WO2010017139A3 Apparatus and method for controlling the feed-in speed of a high pressure hose in jet drilling operations
05/14/2010WO2010015412A3 Method, device and drill head for making a borehole in the soil
05/14/2010WO2010009826A4 Earth auger device
05/14/2010WO2009053343A3 Method of radially expanding a tubular element in a wellbore provided with a control line
05/13/2010US20100116555 Noise-dampening shield structure for rock drilling apparatus
05/13/2010US20100116551 Rotary directional drilling apparatus and method of use
05/13/2010US20100116507 Mobile equipment for riserless drilling, well intervention, subsea construction and the like from a vessel
05/12/2010CN201460984U System for monitoring personnel in transportation inclined shaft
05/12/2010CN201460973U All-in-one machine for loading and drilling
05/12/2010CN201460780U Seabed deep hole core drilling rig
05/12/2010CN201460758U Quick connector of riser pipe
05/12/2010CN201460735U Vibration device of drilling machine
05/12/2010CN201460734U High-pressure water jet coal seam drilling and reaming system
05/12/2010CN201460733U Carbon brush gear of horizontal directional drill
05/12/2010CN201460732U Limiting device
05/12/2010CN201460731U Directional rotary steering drilling tool
05/12/2010CN201460730U Drilling machine for bored pile construction
05/12/2010CN201460729U Excavation machine onboard jumbolter
05/12/2010CN201460728U Hydraulic drilling device arranged on road-header
05/12/2010CN201460727U Drill boom horizontal movement system
05/12/2010CN201460726U Rotary drilling rig and drilling device thereof
05/12/2010CN201460725U Split-type light prospecting drill
05/12/2010CN201460724U Permafrost steam drilling pile machine
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