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 37 - Methods or apparatus for cleaning boreholes or wells
Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129)
04/2014
04/30/2014CN203570272U Quantitative chemical dosing device for pumping well
04/30/2014CN203570271U Long-acting well mouth dosing device
04/30/2014CN203570270U Scraper component for cleaning interior of oil pipe
04/30/2014CN203570269U Three-level screw-in communicating rod of oil-water well pipe
04/30/2014CN203570268U Paraffin-proofing and scale-proofing device of oil well oil delivery pipeline
04/30/2014CN203570267U Scale-removing and paraffin-proofing device used under oil well
04/30/2014CN102561978B Long-stroke no-killing well working device of oil-water well
04/30/2014CN102305050B SUN-W100 biological enzyme well completion production increasing process for well completion plugging removal of oil field
04/30/2014CN102168539B Automatic mud scrape turntable capable of hanging wiring sleeve
04/30/2014CN101405364B Additive for preserving the fluidity of fluids containing gas hydrates
04/26/2014CA2830233A1 Deburring mill tool for wellbore cleaning
04/24/2014US20140110121 New Environmentally Friendly Fluid to Remove Mn3O4 Filter Cake
04/23/2014EP2721251A2 Time-delay fluids for wellbore cleanup
04/23/2014CN203559871U Novel automatic paraffin cleaning hoist
04/23/2014CN203559870U Drifting and scraping device
04/23/2014CN203559869U Casing pipe scraper
04/23/2014CN203559868U Variable-frequency and variable-amplitude type electromagnetic paraffin control and viscosity reduction device
04/23/2014CN103742110A Oil scraper
04/23/2014CN103740353A Composite blocking remover and method for removing blockage of compact sandstone reservoir pressing crack commissioning horizontal well in composite manner
04/22/2014CA2621041C Enclosed circulation tool for a well
04/17/2014WO2014058326A1 Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body
04/16/2014CN203547667U Slit water pumping structure of drilling machine
04/16/2014CN203547666U Spiral multi-hole oblique-eye wax scraping device for an oil pipe
04/16/2014CN203547665U Paraffin removal gun head for sucker rod
04/16/2014CN203547664U Fully intelligent variable frequency oil-water well electromagnetic wax-proofing viscosity reducer
04/16/2014CN203547645U Blowout-control and wax-scrapping device for oil well
04/16/2014CN203547578U Integral multifunctional inclined shaft sucker rod centralizer
04/16/2014CN103726808A Hydraulic sleeve scraper
04/15/2014US8695707 Asphaltene removal composition and methods
04/10/2014US20140096972 Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body
04/09/2014EP2715055A2 Mineral separation using sized-, weight-or magnetic-based polymer bubbles or beads
04/09/2014CN203531850U Oil pipe scraping cleaner
04/09/2014CN203531849U Lining oil tube descaling device
04/08/2014US8691732 Water-based fluid for preventing the formation of W/O emulsions or for resolving W/O emulsions already formed in porous matrices
04/08/2014US8689877 Downhole tool
04/03/2014US20140090848 Compositions and methods for treating a well penetrating a subterranean formation
04/03/2014US20140090833 Methods for Treating Wellbore and Wellbore Operation Fluids
04/02/2014CN203521029U Electric submersible?pump cable allowing wellhead drug adding
04/02/2014CN203515485U Solid wax-proofing device applied to upper part of tubular column of rodless pump well
04/02/2014CN203515484U Oil pipe cleaning device
04/02/2014CN203515483U Drift diameter gauge used for oil field
04/02/2014CN103696736A Paraffin removal device of oil gathering pipeline
04/02/2014CN102296943B Plunger tool for gas recovery by liquid drainage in gas wells
04/02/2014CN102146780B Submersible linear motor respirator
04/01/2014US8684089 Method and system for circulating fluid in a subsea intervention stack
04/01/2014US8684086 Downhole mixing tool
04/01/2014US8684074 Work string mounted cleaning tool and assembly method
04/01/2014CA2663703C Placement of fluids in ground by pulse-injection
03/2014
03/27/2014WO2014046560A1 Device for decolmatation of the critical area of exploitation and injection wells
03/26/2014CN203499642U Reversing structure of paraffin removal shuttle
03/26/2014CN203499641U Pitching-type controllable wall scraping device
03/26/2014CN203499640U Environment-friendly and energy-saving type petroleum machine paraffin removing boiler vehicle for oil field
03/26/2014CN203499639U Variable-intensity and variable-frequency electromagnetic wax-proofing viscosity reducer
03/26/2014CN103670334A Full-automatic adjustable oil well underground continuous agent adding device
03/26/2014CN103670333A Wellhead high-pressure-spraying agentia adding method and device for water injection wells
03/26/2014CN103670317A Simulation pipe string rigidity pigging method
03/26/2014CN103666425A Blocking remover and blocking removal method for corrosion sulfate compound scale
03/25/2014US8678089 Cleanup fluids for anhydrous borate compounds and methods for use thereof in subterranean formations
03/25/2014CA2606782C Wellbore cleaning tool and method
03/20/2014WO2014042882A2 Casing debris cleaner
03/20/2014US20140076573 Casing Debris Cleaner
03/19/2014CN203488150U Waterproof device on fully-intelligent wax-proof viscosity-reducing device
03/19/2014CN203488149U Oil field injection agent adding device
03/19/2014CN203488148U Heat insulation device on fully-intelligent wax-proof viscosity-reducing device
03/19/2014CN203488112U Connection devices at two ends of pipe core
03/19/2014CN203488111U Connectors at two ends of pipe core
03/19/2014CN103642478A Blocking remover for removing polymer pollutants
03/19/2014CN102585791B Displacement agent, preparation method thereof, and application of displacement agent to plugging removal of oil well
03/18/2014US8672033 Method of improving performance and efficiency of wellbore pump for hydrocarbon production
03/18/2014CA2544596C Low friction face sealed reaction turbine rotors
03/12/2014CN203476288U Oil scraping and collecting device for polish rod
03/12/2014CN203476287U Rotary-blade type oil drill stem cleaning device
03/12/2014CN203476286U Slip type downhole packer and flow regulation comprehensive descaling device
03/12/2014CN102337864B Safety valve in pipe
03/06/2014WO2014035375A1 Riser displacement and cleaning systems and methods of use
03/06/2014US20140060845 Fluid composition for wellbore and pipeline cleanout and method of use thereof
03/06/2014US20140060844 Well Cleaning Method
03/06/2014US20140060804 Well Cleaning Device
03/05/2014EP2702240A1 Downhole cleaning system
03/05/2014CN203463075U Oil well mouth hot washing device
02/2014
02/27/2014WO2014031006A1 Device for collection of particulate material in a conduit
02/27/2014WO2014030050A1 Hydraulic cavitation generator
02/26/2014EP2700784A1 Hydro cavitation generator
02/26/2014CN203452734U Integrated production and wax removing and prevention pipe column for high-pressure gas well
02/26/2014CN203452733U Rotary type casing pipe scale-borer and well repair auxiliary device
02/26/2014CN203452732U Scale removal device for sleeve and well repair device
02/26/2014CN203452731U Paraffin removing vehicle
02/26/2014CN203452729U Anti-backflow backwash valve
02/25/2014US8657008 Process for treating underground formations
02/19/2014EP2697481A2 Method and apparatus for cleaning fluid conduits
02/19/2014CN203441437U Cable flusher
02/19/2014CN203441436U Underground paraffin removing and preventing device
02/19/2014CN103590785A Solar liquid preparation automatic filling station
02/18/2014CA2762070C Dissolvable downhole tool, method of making and using
02/18/2014CA2457700C Mutual solvent for improved oil and gas permeability
02/13/2014US20140041873 Method and Apparatus for Local Supply of a Treatment Fluid to a Well Portion
02/12/2014CN203430485U Device for discharging oil in tubular column during well pulling job
02/12/2014CN203430484U Sucker rod self-sealing oil scraping device
02/12/2014CN203430483U Clean-keeping device of sucker rod for borehole operation
02/12/2014CN203430482U Wellhole-pipeline self-energy heating paraffin removal integrated device
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