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)
09/2010
09/08/2010CN1773074B Construction apparatus
09/08/2010CN1773073B Construction apparatus
09/08/2010CN101827995A System and method for controlling a drilling system for drilling a borehole in an earth formation
09/08/2010CN101827994A System and method for directionally drilling a borehole with a rotary drilling system
09/08/2010CN101824966A Device for jetting ultrashort radius horizontal hole by using high-pressure water
09/08/2010CN101824965A Hydraulic pulse cavitating jet generation device
09/08/2010CN101824964A Downhole drill of intelligent underground multi-branch horizontal drilling completion system
09/08/2010CN101824963A Push-pull clutch of horizontal directional drill
09/08/2010CN101824962A Jet mixing drilling tool and method with the same for soil mass supporting construction
09/08/2010CN101824960A Full-hydraulic screw drilling machine
09/07/2010US7789162 Method for running tubulars in wellbores
09/07/2010CA2444776C Drilling system with expandable sleeve
09/02/2010WO2010099465A2 Downhole vibration apparatus and method
09/02/2010WO2010098755A1 Apparatus and method for steerable drilling
09/02/2010WO2010080946A3 Non-stick articles
09/02/2010US20100218999 Drill bit for earth boring
09/02/2010US20100218997 Cutting device with multiple cutting structures
09/02/2010US20100218996 Directional sidetrack well drilling system
09/02/2010US20100218995 Bearing apparatuses, systems including same, and related methods
09/02/2010US20100218994 Borehole drilling control system, method and apparatus
09/02/2010US20100218993 Methods and Apparatus for Mechanical and Thermal Drilling
09/02/2010CA2753595A1 Downhole vibration apparatus and method
09/01/2010EP2222992A1 Tool for drilling through loosely-packed materials
09/01/2010EP2222931A1 Method and equipment for small-charge blasting
09/01/2010EP1583886B1 Isolated electrical connection in a drill string
09/01/2010CN201570743U Signal transmission lead swerving connecting tool
09/01/2010CN201567982U Gas drilling well precipitate dust prevention tool with heterogeneous structure flow division spray holes
09/01/2010CN201567979U Drilling-assisted pressurizing device for extraction of petroleum and CBM (coal bed methane)
09/01/2010CN201567969U Drill rod of drilling machine
09/01/2010CN201567961U Hydraulic variable hole expander while drilling
09/01/2010CN201567960U Floating casing pipe installing pipe series
09/01/2010CN201567959U Boring machine for embedding electric column
09/01/2010CN201567958U Vehicle-mounted drilling machine for coal bed gas
09/01/2010CN201567957U Back walking control board of hydraulic downhole drill
09/01/2010CN201567956U Anchor drill with sliding support
09/01/2010CN201567955U Water driller of circulating self-absorption adapting form engineering
09/01/2010CN201567953U Open-air down-hole driller
09/01/2010CN201567951U Down-the-hole drill machine sliding frame compensation mechanism
09/01/2010CN101821472A Devices and methods for dynamic boring procedure reconfiguration
09/01/2010CN101821471A Magnetic hammer
09/01/2010CN101818644A Well digging process of mining vertical shaft by adopting one-drilling well completion and well drilling method
09/01/2010CN101818620A Mining method for maximum reservoir contact well and maximum reservoir contact well structure
09/01/2010CN101818619A Well cementation and completion structure and process for cased branch well with temporarily-sealed opening
09/01/2010CN101476312B Semi-dragging and suspension drill floor used for petroleum drilling-workover equipment
08/2010
08/31/2010US7786732 Apparatus for monitoring a positional relationship between a boring tool and an inground line
08/31/2010US7784566 Bit balling treatment
08/31/2010US7784565 Top drive systems with main shaft deflecting sensing
08/31/2010US7784563 Method, drilling machine, drill bit and bottom hole assembly for drilling by electrical discharge by electrical discharge pulses
08/31/2010US7784547 Subsea connector insulation device
08/31/2010CA2579647C Control systems and methods for active controlled bottomhole pressure systems
08/26/2010WO2010096629A2 Stabilizer assemblies with bearing pad locking structures and tools incorporating same
08/26/2010WO2010096346A2 Drilling scorecard
08/26/2010WO2010096086A1 Method and system for advancement of a borehole using a high power laser
08/26/2010WO2010095998A1 A start kit, a casing tube and a starter rod for drilling equipments for percussive rock drilling
08/26/2010WO2010095947A1 Method and device for pressure regulation of a well
08/26/2010WO2010094054A1 Drilling method and assembly
08/26/2010WO2010064002A3 Rotary steerable drilling devices and methods of use
08/26/2010US20100212964 Drill Bit With Adjustable Cutters
08/26/2010US20100212960 Method for optimizing the prediction and assessment of earthquakes and/or seismic vibrations
08/26/2010US20100212913 Drilling and Completion Deflector
08/26/2010US20100212901 Downhole vibration apparatus and methods
08/26/2010US20100212900 Running and Cement Tubing
08/26/2010DE102010002101A1 Method for laying portion of line underneath ground surface, involves guiding line in concavity to allow laying of portion of line underneath ground surface, and washing portion of line with liquid and/or gaseous medium
08/26/2010DE102008031490B4 Vorrichtung zum Einbringen eines Tiefbohrloches in Gestein Means for introducing a low borehole in rock
08/26/2010CA2823922A1 Method and system for advancement of a borehole using a high power laser
08/26/2010CA2751029A1 Drilling scorecard
08/26/2010CA2734492A1 Method and system for advancement of a borehole using a high power laser
08/26/2010CA2655593A1 Bearing assembly for use in earth drilling
08/25/2010EP2221446A2 Drilling and completion deflector
08/25/2010EP2220336A1 Rock drilling rig and method for drilling
08/25/2010EP2220329A1 Outer pipe sleeve for sea floor mooring pile
08/25/2010EP1792052B1 Integrated magnetic ranging tool
08/25/2010CN201560921U Automatic variable-frequency and variable control mechanism for pumping station of mining surface protrusion-dispelling drilling machine in high Outbursting coal mine
08/25/2010CN201560760U Track type four-arm drill jumbo
08/25/2010CN201560759U Horizontal directional sampling drilling tool
08/25/2010CN201560756U Center cabling type directional water delivery device
08/25/2010CN201560734U Wabbing workover vehicle
08/25/2010CN201560711U Horizontal direction finder power head convenient for being disassembled
08/25/2010CN201560710U Integral all-hydraulic drill for mining capable of satisfying several drilling styles
08/25/2010CN201560709U Integral all-hydraulic drill for mining capable of satisfying several drilling styles
08/25/2010CN201560708U Automatic walking mechanism of host machine unit of integral transportation petroleum drilling machine
08/25/2010CN201560707U Petroleum electrohydraulic workover rig with two operation chamber
08/25/2010CN201560704U Unit head sliding device and horizontal directional drilling machine with the same
08/25/2010CN101812978A Inclined wedge type clamp
08/25/2010CN101812975A Anti-icing conductor tube composite structure
08/25/2010CN101812974A Lifting platform of construction vehicle
08/25/2010CN101812969A Full-capacity eccentric bearing for extracting underground deviation correcting energy
08/25/2010CN101812968A Walking type horizontal directional drilling machine
08/25/2010CN101812967A Deep hole drilling machine for mining
08/25/2010CN101812966A engineering driller
08/25/2010CN101095239B High temperature electronic device
08/24/2010US7781379 Treated with quaternary ammonium surfactants having at least two amide linkages; preventing marine environment and groundwater contamination
08/24/2010US7779933 Apparatus and method for steering a drill bit
08/19/2010WO2010092315A1 Trenchless ducting apparatus frame
08/19/2010WO2010092314A1 Control systems and methods for temporary inhibition of side cutting
08/19/2010WO2010092313A1 Offset stochastic control
08/19/2010WO2009074643A3 Method of creating a wellbore system
08/19/2010WO2009074632A3 Wellbore system
08/19/2010US20100206637 Cutting Unit for a Tunneling Apparatus
08/19/2010US20100206634 Reamer and Methods for Directional Drilling
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