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
06/23/2010CN201513119U Rotary drilling rig
06/23/2010CN201513118U Portable support engineering drill rig
06/23/2010CN201513117U Rotary drilling rig used for cast-in-site cylindrical pile
06/23/2010CN201513116U Rotary drilling tool and rotary drilling rig comprising same
06/23/2010CN201513115U High-low double-speed pressurizing system of rotary drilling rig
06/23/2010CN101755103A Method and apparatus for establishing a manual governor control setting in an electro-hydraulic system
06/23/2010CN101755102A Constant-mode auto-drill with pressure derivative control
06/23/2010CN101748989A Branch well window sealing method
06/23/2010CN101748980A Cyclone separator set for separating and purifying cutting-carrying gas generated by gas drilling
06/23/2010CN101748975A Fixing seat for rotary drilling rig and rotary drilling rig
06/23/2010CN101748970A Ultra-short radius radial well-drilling tool system
06/23/2010CN101748899A Method for pore forming by embedding assistant bonded rebar in reinforced concrete structure
06/23/2010CN101213351B Drill slide for rock drilling apparatus
06/23/2010CN101182755B Down-hole horizontal boring machine distribution control method
06/23/2010CN101029489B Construction equipment and method for preparing said equipment for transportation
06/22/2010US7740074 Tree mounted well flow interface device
06/22/2010CA2453353C Steerable rotary drill bit assembly with pilot bit
06/17/2010WO2010068751A2 Vibratory drill head mounting and rotation coupling system
06/17/2010WO2010065993A1 Removal/fitting of subsea sealing plug(s)
06/17/2010WO2010037518A3 Method and device for fusion drilling
06/17/2010US20100147592 Mill-Through Tailpipe Liner Exit
06/17/2010US20100147591 Multiphase drilling systems and methods
06/17/2010US20100147529 Systems and Methods for Controlling Risers
06/17/2010US20100147526 Method and a device for intervention in an underwater production well
06/17/2010US20100147519 Mitigating perforating gun shock
06/17/2010US20100147510 Remote logging operations environment
06/16/2010EP2195509A1 A way of constructing and renovating the pipeline especially an underground one, and a set of devices for using this method
06/16/2010EP2195506A1 Dual bha drilling system
06/16/2010CN201507241U Swing mechanism of rotary drilling rig
06/16/2010CN1789651B Cutting component used for hydraulic underreamer
06/16/2010CN101737060A Beneath-soil through-tunnel superlarge diameter pipe curtain construction method
06/16/2010CN101737009A Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc
06/16/2010CN101737008A Large-aperture split arm type downhole drill
06/16/2010CN101737007A Self-propelled heavy desert workover rig chassis
06/16/2010CN101737006A Dry wet-type drill box of anchor rod drill carriage
06/16/2010CN101737005A Drilling tool for sleeving anchor cable and construction method for sleeving anchor cable with simultaneous casing
06/16/2010CN101737004A Pressure mechanism suitable for fire rebuilt wellhead device for oil and gas well
06/16/2010CN101737003A Hydraulic walking type heavy-caliber gantry pile machine
06/16/2010CN101737001A Novel wall surface drilling machine oil supplying sleeve
06/15/2010US7737863 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems
06/15/2010US7735563 Pressure driven pumping system
06/15/2010US7735561 Subsea adapter for connecting a riser to a subsea tree
06/15/2010CA2445085C Method of drilling an ultra-short radius borehole
06/10/2010WO2010065573A2 Ball piston steering devices and methods of use
06/10/2010WO2010065431A1 Downhole communication devices and methods of use
06/10/2010WO2010064002A2 Rotary steerable devices and methods of use
06/10/2010WO2010020215A3 Drilling rig and mounting method therefor
06/10/2010WO2010020214A3 Drilling station
06/10/2010US20100143044 Method and System for Building Modular Structures from Which Oil and Gas Wells are Drilled
06/10/2010US20100141012 Method of quarrying dimensional stone, and line drilling apparatus
06/10/2010US20100139986 Agitator for a Drill and Related Methods
06/10/2010US20100139983 Rotary steerable devices and methods of use
06/10/2010US20100139982 Method and Apparatus for Establishing a Manual Governor Control Setting in an Electro-Hydraulic System
06/10/2010US20100139981 Hole Enlargement Drilling Device and Methods for Using Same
06/10/2010US20100139980 Ball piston steering devices and methods of use
06/10/2010US20100139978 Deep water drilling with casing
06/10/2010US20100139977 Active Vibration Control for Subterranean Drilling Operations
06/10/2010US20100139886 System and method for geothermal conduit loop in-ground installation and soil penetrating head therefor
06/10/2010CA2745794A1 Ball piston steering devices and methods of use
06/10/2010CA2745086A1 Downhole communication devices and methods of use
06/09/2010EP2193251A1 Well construction using small laterals
06/09/2010CN201502396U High-pressure water jet outburst prevention and permeability improvement system for mining
06/09/2010CN201502326U Two-slide block continuous whipstock
06/09/2010CN201502325U Supporting device which can be located by self and adjusted in vernier way
06/09/2010CN201502324U Hand-held drilling machine
06/09/2010CN1623026B Method for retrofitting concrete structures
06/09/2010CN101730783A Method and system for particle jet boring
06/09/2010CN101730782A Dual density mud return system
06/09/2010CN101726330A Device for testing stable platform
06/09/2010CN101725342A Hollow cable type directed water conveying device
06/09/2010CN101250869B Method for pore-creating of geology with aleurite layer at upper part and middle, slightly weathered siltstone layer at lower part
06/09/2010CN101245594B Bidirectional stirring pile machine
06/09/2010CN101070750B Dust-removing device for gas drilling-well
06/09/2010CN101048569B Drilling unit
06/08/2010US7731453 Method and device for trenchless laying of pipelines
06/08/2010US7730974 Self actuating underreamer
06/08/2010US7730973 Housing arrangement for a drill rig
06/08/2010US7730972 Downhole turbine
06/08/2010US7730970 Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting levels
06/08/2010US7730969 Reamer and methods for directional drilling
06/08/2010US7730965 Retractable joint and cementing shoe for use in completing a wellbore
06/08/2010CA2633627C Method for completing a well using increased fluid temperature
06/03/2010WO2010045205A3 Sonic drill head
06/03/2010US20100133204 Reusable filters for fluid loss measurements of drilling fluids
06/03/2010US20100133013 Bit for drilling wells and associated drilling method
06/03/2010US20100133012 Apparatus and method for servicing a wellbore
06/03/2010US20100133011 Drill string with modular motor units
06/03/2010US20100133008 Monitor and control of directional drilling operations and simulations
06/02/2010EP2192259A1 Pipeline pressure device with endless conveyor members for use during a horizontal directional drilling process
06/02/2010EP2191101A1 Drill in sand control liner
06/02/2010EP2191096A2 Devices and methods for dynamic boring procedure reconfiguration
06/02/2010EP2191095A1 Magnetic hammer
06/02/2010CN201496065U Snubbing unit for horizontal well test system
06/02/2010CN201495988U pit boring machine hung on wheeled tractor
06/02/2010CN201495987U Mine perforating machine
06/02/2010CN201495986U Tracked hydraulic down-the-hole drill
06/02/2010CN201495539U Deep cement soil stirring machine
06/02/2010CN201495063U Position conversion device for winch brake crank of truck-mounted drilling rig
06/02/2010CN1959058B Rotary dual jet flows boring method under high pressure
06/02/2010CN101718175A Universal joint device for ocean deepwater drilling
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