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 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780)
04/2014
04/02/2014CN203515400U Treatment system for offshore oilfield oil well acidification discharge liquor
04/02/2014CN203515399U Treatment system for offshore oilfield water injection well backwashing return water
04/02/2014CN203515398U Water-based drilling fluid waste while-drilling integrated intelligent processing device
04/02/2014CN203515397U Gas unbalanced drilling sand discharging opening gas and sand separating device
04/02/2014CN203515396U Hydrocarbon reservoir protective device
04/02/2014CN203515343U Double-gas-outlet-channel roller-bit hole rig
04/02/2014CN103696720A Composite unblocking method
04/02/2014CN103696714A Saline water system of marine drilling platform and saline water purifying method based on saline water system
04/02/2014CN103696713A High pressure injector for drill pipe
04/02/2014CN103696417A Secondary hole cleaning device and method of bottom of cast-in-situ bored pile
04/02/2014CN102536142B Method for pumping and washing coal bed methane discharge well uninterruptedly
04/02/2014CN102383750B Continuous positive and negative integrated sand washing device for oil well
04/01/2014US8684109 Drilling method for drilling a subterranean borehole
04/01/2014US8684089 Method and system for circulating fluid in a subsea intervention stack
03/2014
03/27/2014WO2014047319A1 Oil based flocculation mixing and dispersion system
03/27/2014WO2014046953A1 Thermally-activated, high temperature particulate suspending agents and methods relating thereto
03/27/2014WO2014044904A1 Sampling apparatus
03/27/2014WO2014043819A1 Amide branched aromatic gelling agent enhancers and breakers
03/27/2014US20140083776 Method for initiating fluid circulation using dual drill pipe
03/26/2014CN203499627U Hydraulic oil well packer
03/26/2014CN203499609U Gas dividing valve of drilling tool
03/26/2014CN203499608U Multifunctional sand flushing and well washing valve
03/26/2014CN203499607U Separator for drilling fluid skimming tank
03/26/2014CN203499606U Oil inlet bin for drilling fluid skimming tank
03/26/2014CN203499605U A separating apparatus for a drilling fluid skimming tank
03/26/2014CN203499604U Silt remover for drilling fluid
03/26/2014CN203499603U Movable drilling fluid purifying device having heating function
03/26/2014CN203499602U A gas inflow sieve pipe of a gas drilling rock waste separating drum
03/26/2014CN203499601U Well-cementing spacer fluid evaluation device
03/26/2014CN203494293U Drilling fluid skimming tank
03/26/2014CN103688014A Selective hydraulic fracturing tool and method thereof
03/26/2014CN103688013A Downhole fluid flow control system and method having dynamic response to local well conditions
03/26/2014CN103687677A Multi-deck shaker
03/26/2014CN103670320A Comprehensive dust prevention method for large-mining-height working face
03/26/2014CN103670308A Deep-water oil well full-drift-diameter high-pressure-resisting reverse flushing valve
03/26/2014CN103670307A Short circuit guaranteeing drilling fluid continuous circulation and drilling fluid continuous circulation process thereof
03/26/2014CN103670306A Complex working condition monitoring device for well drilling
03/26/2014CN103670274A Rock pile foundation pore-forming device
03/26/2014CN103670272A Double-speed double-torque crawler type hydraulic cutting drilling machine
03/26/2014CN103670271A Dual-cycle relay coal bed well drilling method
03/26/2014CN102425386B Drilling fluid rheological parameter control method meeting power law mode
03/26/2014CN102425370B Hole bottom oil pressure motor lithoclast combined power drilling tool construction method and device
03/26/2014CN102242621B Negative pressure de-plugging and oil extraction process and device
03/25/2014US8678110 Mud saver valve and method of operation of same
03/25/2014US8678091 Magnetic retrieval apparatus and method for retaining magnets on a downhole magnetic retrieval apparatus
03/25/2014US8678085 Well control operational and training aid
03/25/2014CA2798561C Apparatus and method for detecting gases conveyed by drilling fluids from subterranean wells
03/20/2014WO2014042844A1 Fluid deployment system for drilling and completion fluids
03/20/2014WO2014042541A1 Improvements in, or related to, float valve hold open devices and methods therefor
03/20/2014WO2014040648A1 Processing fluid from a well
03/20/2014WO2013103817A3 Active drilling measurement and control system for extended reach and complex wells
03/20/2014WO2013024354A3 Drilling fluid pump module coupled to specially configured riser segment and method for coupling the pump module to the riser
03/20/2014US20140076636 Gas injection for managed pressure drilling
03/20/2014US20140076569 Proppant mixing and metering system
03/20/2014US20140076552 Treatment fluids comprising magnetic surfactants and methods relating thereto
03/19/2014EP2707570A1 Pressure and flow control in drilling operations
03/19/2014EP2707568A1 Device and method for pressure regulation of a well
03/19/2014CN203488128U Reconnaissance construction environment-friendly slurry box
03/19/2014CN103649452A A fluid diverter system for a drilling facility.
03/19/2014CN103648665A Screen assembly and a method for making same
03/19/2014CN103643987A Gas collection, slag removal and drainage device for drill hole
03/19/2014CN103643912A Sea valve of mud tank
03/19/2014CN103643911A Slag collection device
03/19/2014CN103643910A Device for recycling mud and diesel oil base from waste oil-base mud
03/19/2014CN102518405B Integrated vacuum negative-pressure three-level dust removal system
03/18/2014CA2544596C Low friction face sealed reaction turbine rotors
03/13/2014WO2014039025A1 Mud pulser with high speed, low power input hydraulic actuator
03/13/2014WO2013141963A8 Mathematical modeling of shale swelling in water based muds
03/13/2014WO2013067187A3 High energy in-line hydraulic shearing unit for oilfield drilling fluids
03/13/2014US20140072368 Process for conversion of intractable oil-bearing, drill cutting wastes from deep gas exploration wells to engineering construction materials
03/13/2014US20140069660 Apparatus, methods, and systems for filling and circulating fluid in tubular members
03/12/2014CN203476262U Liquid/gas dual-medium continuous cycle control system and well-drilling system
03/12/2014CN203476261U Working fluid filtering device
03/12/2014CN203476260U Horizontal well reverse circulation sand washing receiver
03/12/2014CN203476259U Sand removing device of oil well negative-pressure machine
03/12/2014CN203476258U Negative-pressure mechanical sand removal device for horizontal well
03/12/2014CN203476257U Mechanical and hydraulic hybrid type full-working-condition machine pump unit
03/12/2014CN203476206U Horizontal directional crossing equipment adopting slurry injection technology
03/12/2014CN203469631U Washable well filter and water injection assisting device
03/12/2014CN103635655A Optimized pressure drilling with continuous tubing drill string
03/12/2014CN103628833A Top support type automatic grouting valve type float valve
03/12/2014CN103628832A Centralized mud treatment system for underground diaphragm wall construction and treating method thereof
03/12/2014CN103628831A Stereo water spraying dust eliminating system
03/12/2014CN103624001A Mud fending device
03/12/2014CN102434119B Control method of Casson model drilling fluid rheological parameters
03/12/2014CN102287179B Well-flushing storage type underground video detection device
03/11/2014US8668009 Method and apparatus for controlling a volume of hydrogen input and the amount of oil taken out of a naturally occurring oil field
03/11/2014CA2723992C Cuttings transfer system
03/06/2014WO2014035810A1 Wellbore servicing compositions and methods of making and using same
03/06/2014WO2014033265A1 Method of calibration in a process of determining the content of a plurality of compounds contained in a drilling fluid
03/06/2014WO2014032847A1 Boring apparatus and method for producing a bore
03/06/2014WO2013079926A3 Drill string check valve
03/06/2014US20140060931 Systems and Methods for Automatic Drilling of Wellbores
03/06/2014US20140060838 Downhole Robotic Micro-Drilling System
03/06/2014US20140060819 Determining surface wetting of metal with changing well fluids
03/05/2014EP2703598A1 Centre for the preparation of additives for hydraulic fracturing operations and hydraulic fracturing process employing the preparation centre
03/05/2014EP2703597A1 Method of calibration for the use in a process of determining the content of a plurality of compounds contained in a drilling fluid
03/05/2014EP2703596A1 Drilling device and method for producing a borehole
03/05/2014EP2702239A2 Annular relief valve
03/05/2014EP2702236A2 Collapse sensing check valve
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