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
04/17/2014US20140102799 Dual Drive Directional Drilling System
04/17/2014US20140102797 Selective deployment of underreamers and stabilizers
04/17/2014US20140102795 Attitude Reference for Tieback/Overlap Processing
04/17/2014US20140102793 System and method for acquiring information during underground drilling operations
04/17/2014US20140102792 Systems and methods for directional drilling
04/17/2014US20140102789 Dual gradient drilling system
04/17/2014US20140102712 Subsea processor for underwater drilling operations
04/16/2014CN203548818U Drilling machine and transmission gearbox for same
04/16/2014CN203548382U Hydraulic system of rotary drilling rig and rotary drilling rig
04/16/2014CN203547544U Anti-settling mud drilling bit
04/16/2014CN203547538U Dual-channel slurry jetting device
04/16/2014CN203547537U Ream-while-drilling vibration anti-sticking pipe nipple
04/16/2014CN203547536U Rapid redressing device for oil drilling
04/16/2014CN203547535U Transmission device used for tunnel drilling equipment
04/16/2014CN203547534U Integral window sidetrack drilling tool
04/16/2014CN203547533U Anchoring and orientation integration whipstock base tool
04/16/2014CN203547532U Drill tool with protective device
04/16/2014CN203547531U Post emulsified liquid drill for coal mine
04/16/2014CN103726869A Drilling with casing method for gas extraction hole of soft broken coal seam
04/16/2014CN103726788A Well drilling guide device and work method thereof
04/16/2014CN103726787A Novel drilling driver
04/16/2014CN103726785A Rotary drilling rig with hydraulic breaker device
04/16/2014CN102635310B Downhole casing drilling device of oil well
04/16/2014CN102242604B Pulse spray nozzle
04/16/2014CN102182404B Cast-in-situ tubular pile rotary drilling rig capable of forming annular hole and piling method
04/16/2014CN101666208B Gear rack lifting drilling machine
04/15/2014US8696289 Cartridge tubular handling system
04/15/2014US8695731 Drilling system
04/15/2014CA2809532A1 Agitator sub
04/15/2014CA2755363C Variable force/variable frequency sonic drill head
04/15/2014CA2725717C Apparatus and methods for drilling a wellbore using casing
04/10/2014WO2014055090A1 Detection of influxes and losses while drilling from a floating vessel
04/10/2014WO2014054015A1 Mobile drilling rig
04/10/2014WO2013167872A3 Drilling and lining subsea wellbores
04/10/2014WO2013130750A4 Silent entry torching and oxygen delivery system and configuration
04/10/2014WO2013096378A3 System and method of fracturing while drilling
04/10/2014WO2013096361A3 Inflatable packer element for use with a drill bit sub
04/10/2014US20140097026 Positive Displacement Motor (PDM) Rotary Steerable System (RSS) And Apparatus
04/10/2014US20140097025 Method and apparatus for use of microbes and other gas stimulants in radial enhancement drilling fluid
04/10/2014US20140097024 Drill bits having depth of cut control features and methods of making and using the same
04/10/2014US20140096966 Method and Apparatus for Completion of Heavy Oil Unconsolidated Sand Reservoirs
04/10/2014DE102012218285A1 Vorrichtung und Verfahren zum Erstellen einer Gründung und Gründung Apparatus and method for creating a foundation and foundation
04/09/2014EP2715060A2 Compositions, methods, apparatus, and systems for incorporating bio-derived materials in drilling and hydraulic fracturing
04/09/2014EP2715040A1 Variably configurable wellbore junction assembly
04/09/2014EP2715039A2 Wellbore junction completion with fluid loss control
04/09/2014EP2715034A1 Drilling rig system with self-elevating drill floor
04/09/2014EP2715031A1 Mud motor assembly
04/09/2014EP2715030A1 Downhole sinusoidal vibrational apparatus
04/09/2014CN203531881U Control system for suspension arm perpendicular drilling
04/09/2014CN203531790U Novel drill collar
04/09/2014CN203531789U Novel deviation-preventing and deviation-correcting drill collar
04/09/2014CN203531750U Drilling machine with hydraulic control console capable of rotating in total-angle mode
04/09/2014CN203531749U Double-arm hydraulic tunneling drill carriage
04/09/2014CN203531748U Dedusting rotary drill rig
04/09/2014CN203531747U Frame-column-type emulsified liquid drilling machine for fully-mechanized face fault passing
04/09/2014CN203530886U Multifunctional full-hydraulic self-propelled piling pile-pulling drilling all-in-one machine for road anti-collision guardrail
04/09/2014CN103717823A Drilling tool for laying a tube in the ground
04/09/2014CN103711473A Double-circulation relay type method for drilling and completing coal seam composite well
04/09/2014CN103711457A Design method of six-spud-in wellbore structure
04/09/2014CN103711434A Mobile highway stand column horizontal drilling machine
04/09/2014CN103711433A Roadheader-mounted hydraulic drilling rig
04/09/2014CN103711432A Special mechanical rotary frame for tunnel engineering drilling rig
04/09/2014CN103711431A Variable-frequency electrically-driven top drive type core drill used for geological coring exploration
04/09/2014CN102733756B Vibration and pressure well drilling tool
04/09/2014CN102678046B Mining drill carriage
04/09/2014CN102628337B Horizontal submarine polymetallic sulfide deposit area chimney sampling drill
04/09/2014CN102409978B Rotary drilling hole forming method by using multi-stage alloy pilot roller bit in complex stratum cast-in-place pile construction
04/09/2014CN102220840B Drill boom of multi-directional driller
04/09/2014CN101268246B Steerable drilling system
04/08/2014US8689905 Drilling assembly with steering unit integrated in drilling motor
04/08/2014US8689882 Flexible hang-off arrangement for a catenary riser
04/08/2014US8689879 Fluid displacement methods and apparatus for hydrocarbons in subsea production tubing
04/08/2014CA2765069C Method of drilling using an offshore riser
04/08/2014CA2724581C Casing exit joint with easily milled, low density barrier
04/08/2014CA2558424C Extracting and processing hydrocarbon-bearing formations
04/03/2014WO2014051938A1 Diverter latch assembly system
04/03/2014WO2014048627A2 Device and method for laying a pipeline in a borehole
04/03/2014WO2013121299A3 High definition drilling rate of penetration for marine drilling
04/03/2014WO2013066276A3 Method of disintegrating rock by melting and by synergism of water streams
04/03/2014US20140090898 Casing Drilling Bottom Hole Assembly Having Wireless Power And Data Connection
04/03/2014US20140090896 Method for Improving High Temperature Rheology in Drilling Fluids
04/03/2014US20140090894 Diverter latch assembly system
04/03/2014US20140090889 Mining drill with gradient sensing
04/03/2014DE202013011721U1 Bohrvorrichtung zum Herstellen von Hausanschlüssen Drilling device for making house connections
04/03/2014DE112012000985T5 Fluidbohrkopfdüsebauweise Fluidbohrkopfdüsebauweise
04/03/2014DE102012217822A1 Vorrichtung und Verfahren zur Verlegung einer Rohrleitung in einem Bohrloch Apparatus and method for laying a pipeline in a borehole
04/02/2014EP2713002A1 Rock drilling rig and method of positioning rock drilling unit
04/02/2014CN203515322U Radial water-jet drill
04/02/2014CN203515321U Fire-retardant device special for gas drilling
04/02/2014CN203515320U Efficient soil drilling machine
04/02/2014CN203515319U Movable type hydraulic underground drill rig
04/02/2014CN203515318U Outer-infusion type support underground drill rig
04/02/2014CN203515317U Counterweight adjusting device for drilling and tapping equipment for small diameter holes
04/02/2014CN203515316U Novel oil field drilling operation device
04/02/2014CN203515315U Liquid rotation front guiding device
04/02/2014CN203515314U Hydraulic power head of full hydraulic anchoring drilling machine
04/02/2014CN203515313U Rotary drill rig adjustable in length
04/02/2014CN103703207A Device and method for directional drilling
04/02/2014CN103696706A Remote-control-while-drilling tapered stabilizer
04/02/2014CN103696694A Ultra-deep gravel pile drilling tool
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