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)
04/2014
04/02/2014CN103696693A Hydraulic oscillator for well drilling
04/02/2014CN103696692A Radial hydraulic vibrator
04/02/2014CN103696691A Hydraulic continuous horizontal drilling machine for flexible steel tube
04/02/2014CN103696690A Retractable type down-the-hole drilling tool for constructing cast-in-place pile
04/02/2014CN103696689A Power head cruising drilling method, power head cruising drilling system and rotary drilling machine
04/02/2014CN103696688A Power head cruising drilling method, power head cruising drilling system and rotary drilling machine
04/02/2014CN103696687A Integral drilling pressure control system of deep well drilling rig
04/02/2014CN103696686A Jet-type explosive pressure pulse anti-drag drilling tool
04/02/2014CN102777123B High-expansibility naked eye suspension adhering system and method
04/02/2014CN102606074B Novel submarine deep hole pressure maintaining and core drilling rig
04/02/2014CN102465666B Rotary drilling rig
04/02/2014CN102418540B Hydraulic eight-arm anchor rod drill carriage for coal mine
04/02/2014CN102369335B Drilling rig with hinged, retractable outriggers
04/01/2014US8684095 Geothermal pipe setting tool
04/01/2014US8684090 Slip connection with adjustable pre-tensioning
04/01/2014US8684088 Shear laser module and method of retrofitting and use
04/01/2014CA2827180A1 Rock drilling rig and method of positioning rock drilling unit
04/01/2014CA2736148C Settable compositions comprising cement kiln dust and swellable particles
04/01/2014CA2621259C Method of breaking brittle solids
03/2014
03/27/2014WO2014047599A1 Positive displacement motor (pdm) rotary steerable system (rss) and apparatus
03/27/2014WO2014046668A1 System and method for determining drilling parameters based on hydraulic pressure associated with a directional drilling system
03/27/2014WO2014046647A1 Methods and systems for tracking a toolstring at subsea depths
03/27/2014WO2013148521A8 Hammer drill
03/27/2014WO2013127759A3 Washout preventer
03/27/2014US20140083778 Thread device, thread joint and drill string component for percussive rock drilling
03/27/2014US20140083777 Rotary steerable tool
03/27/2014US20140083769 Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection
03/27/2014US20140083768 Drilling Bottom Hole Assembly Having Wireless Power And Data Connection
03/26/2014EP2710216A1 Mobile pressure optimization unit for drilling operations
03/26/2014CN203499571U Minimally invasive non-excavation drill rig fixing base
03/26/2014CN203499562U Drilling and reaming device for well drilling
03/26/2014CN203499561U Separable type caterpillar band drill carriage for coal mine
03/26/2014CN203499560U Drill carriage propeller assembly
03/26/2014CN203499559U Conveniently moved hydraulic anchoring drill for roadway
03/26/2014CN203499558U Drilling speed increasing supercharger
03/26/2014CN203499557U Hydraulic rock drill
03/26/2014CN103671002A Well drilling hydraulic pump
03/26/2014CN103670498A Pre-pumping outburst prevention technology utilizing drill hole instead of stone drift
03/26/2014CN103670280A Blade motor driving type downhole supercharging device and blade motor driving type downhole supercharging method
03/26/2014CN103670279A Tool for construction of multilateral well
03/26/2014CN103670278A Mechanical system of coiled tubing electro-hydraulic machine control orienting tool
03/26/2014CN103670277A Perpendicularity positioner of electric transmission line pole and tower compound foundation drill hole
03/26/2014CN103670276A Monolithic horizontal movement system of wagon drill
03/26/2014CN103670275A Hydraulic rock drilling machine
03/26/2014CN103670274A Rock pile foundation pore-forming device
03/26/2014CN103670273A Rotary drilling machine and tail support device thereof
03/26/2014CN103670272A Double-speed double-torque crawler type hydraulic cutting drilling machine
03/26/2014CN103670271A Dual-cycle relay coal bed well drilling method
03/26/2014CN103670270A Balance weight mechanism of small-diameter hole drilling and tapping device
03/26/2014CN103670269A Turbine torsional impact generator
03/26/2014CN102245852B Drill head assembly, drill system and drilling method
03/26/2014CN101790620B Drilling method using sand control liner
03/25/2014US8678108 Torque transmitting elastomeric element in casing drilling drill lock assembly
03/25/2014US8678107 System and method for drilling hammer communication, formation evaluation and drilling optimization
03/25/2014US8678093 Insertion of a pack-off into a wellhead
03/25/2014US8678087 Wellbore laser operations
03/21/2014CA2827351A1 Cloud computing method for geosteering directional drilling apparatus
03/20/2014WO2014042644A1 Rotary steerable drilling system
03/20/2014WO2014041036A2 Steering system
03/20/2014WO2014040152A1 Thermo-mechanical drilling method
03/20/2014WO2013062871A3 Horizontal borehole mining system and method
03/20/2014US20140076637 Bi-Stable Valve
03/20/2014US20140076574 Method and system for installing subsea well trees
03/20/2014DE112012002117T5 Rohrführungseinrichtung, Rohrschieber, Rollenbock und Verfahren zum Verlegen eines Rohres in einem Untergrund Conduit means, tube slide, roller block and method of laying a pipe in an underground
03/20/2014DE102012018181A1 Chisel-less drilling system has cutting device with outer ring and base which is cut as two or more thin rings by very thin laser beam, piezoelectric, water or other suitable separating process
03/19/2014EP2707568A1 Device and method for pressure regulation of a well
03/19/2014EP2707565A2 Device and method for directional drilling
03/19/2014CN203488101U Intelligent oil well drilling device
03/19/2014CN203488100U 360-degree oil and electricity dual-purpose hole puncher
03/19/2014CN203488099U Hydraulic control rapid drilling machine
03/19/2014CN203488098U Caterpillar-track-type hydraulic control drilling machine
03/19/2014CN203488097U Novel trailer type water well drilling rig
03/19/2014CN203488096U Drilling machine
03/19/2014CN203488095U Full hydraulic track pump truck for directional drilling under coal mines
03/19/2014CN203488094U Intelligent oil well drilling device
03/19/2014CN103649450A Method and arrangement for calibrating sensors in drilling equipment
03/19/2014CN103644443A Intelligent lubricating system of full-hydraulic crawler-type cutting drill chain
03/19/2014CN103644215A Intelligent hydraulic braking system of full-hydraulic crawler-type cutting drill
03/19/2014CN103643918A Method for searching for and preventing mine water seepage of Ordovician limestone mine field
03/19/2014CN103643899A Integrated drilling-cutting drill rod device
03/19/2014CN103643897A Deflecting bit
03/19/2014CN103643896A Caterpillar-type deep hole hydraulic cutting drill
03/19/2014CN103643895A Crawler-type hydraulic cutting drilling machine with intelligent braking device
03/19/2014CN103643894A Crawler-type hydraulic cutting drilling machine of large-air-volume air compressor system
03/19/2014CN103643893A Sieve tube drilling process for outburst coal seam section in underground coal mine
03/19/2014CN103643892A Tool for feeding drill strings under drive of screw
03/19/2014CN103643891A Large-torque combination screw drill
03/19/2014CN102337844B Directional drilling signal transmission drill pipe
03/18/2014US8672056 System and method for controlling steering in a rotary steerable system
03/18/2014US8672055 Automated directional drilling apparatus and methods
03/18/2014US8672039 Coiled tubing inline motion eliminator apparatus and method
03/18/2014CA2762000C Downhole tool retrieval and setting system
03/18/2014CA2575275C Directional drilling control
03/18/2014CA2544596C Low friction face sealed reaction turbine rotors
03/13/2014WO2014039395A2 Preload and centralizing device for milling subterranean barrier valves
03/13/2014WO2014039209A1 Friction reduction assembly for a downhole tubular, and method of reducing friction
03/13/2014WO2014039078A1 Apparatus and method for lateral well drilling
03/13/2014WO2014008367A3 Top-tensioned riser system
03/13/2014WO2013085822A3 Resonant extractor system and method
03/13/2014WO2013079935A3 Improved wireline drilling system
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