| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
|---|
| 03/06/2013 | CN202767947U Movable device for paraffin removal and washing of oil well with primary well fluid |
| 03/05/2013 | US8388256 Clamp |
| 03/05/2013 | US8387700 Wellbore debris cleanout assembly and method to remove debris from a debris catcher |
| 02/28/2013 | US20130048289 Sealing system, method of manufacture thereof and articles comprising the same |
| 02/28/2013 | US20130048285 Compositions and Methods for Servicing Subterranean Wells |
| 02/21/2013 | WO2012170464A3 Apparatus and method for water well cleaning and rehabilitation |
| 02/21/2013 | WO2012125660A3 Dual wiper plug system |
| 02/20/2013 | EP2558679A2 A tool for removing debris from a wellbore |
| 02/20/2013 | CN202745817U Pulverized coal scraper |
| 02/20/2013 | CN202745816U Paraffin removal pipe column of flowing well |
| 02/20/2013 | CN202745815U Compressed natural gas hot-wash paraffin removal automobile |
| 02/20/2013 | CN202744253U Fixing device for paraffin cleaning hoist counter |
| 02/20/2013 | CN102937792A Electronic dryer for oil well solid biochemical wax block |
| 02/19/2013 | US8376043 Downhole scraping and/or brushing tool and related methods |
| 02/19/2013 | CA2573680C Water flooding method |
| 02/19/2013 | CA2487380C Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 02/14/2013 | WO2013022648A2 Electrolytic composition for degrading polymeric filter cake |
| 02/14/2013 | US20130037274 Electrolytic Composition for Degrading Polymeric Filter Cake |
| 02/13/2013 | CN202731852U Special cylinder-shaped wax scrapping machine for intelligent interval bailing type pumping unit |
| 02/13/2013 | CN202731851U Heating well-flushing device with hollow rod |
| 02/13/2013 | CN202731850U Vibration type oil well cleaning machine |
| 02/13/2013 | CN202731849U Wear-resisting permanent magnet paraffin controller for sucker rod |
| 02/13/2013 | CN202731842U Injection valve capable of throwing and salvaging for injecting chemical agent |
| 02/13/2013 | CN102929175A Electronic drying method for oil well solid biochemical discharge wax block |
| 02/12/2013 | US8372786 Polyelectrolyte complexes for oil and gas applications |
| 02/06/2013 | CN202718664U Flexible drainage system for coal-bed gas well |
| 02/06/2013 | CN102913196A Wellhead self-help dosing method |
| 02/06/2013 | CN102913195A Wellhead self-help dosing device |
| 02/06/2013 | CN102913194A Novel stepping paraffin scraper |
| 02/06/2013 | CN102913193A Oil pumping rod anti-fouling device |
| 02/06/2013 | CN102913192A Well dredging method adopting alternating magnetic field for oil production well and well dredging device |
| 02/06/2013 | CN102909170A Acoustic generator |
| 01/31/2013 | US20130025885 Downhole Line Tool Assembly and Method for Use Thereof |
| 01/31/2013 | US20130025865 Wellbore knock-out chamber and related methods of use |
| 01/30/2013 | CN202706998U Energy-saving automatic dosing device for oil well |
| 01/30/2013 | CN202706997U Efficient solid anti-scaling device |
| 01/30/2013 | CN202706996U Scraper type high-pressure water jet spray head |
| 01/30/2013 | CN202706995U Wax preventing device |
| 01/30/2013 | CN102895889A Automatic stirring method for micro-organic oil-dispersing plug-removing agent |
| 01/29/2013 | US8360153 Debris-catching attachment device and method therefor |
| 01/24/2013 | WO2013012341A1 Cleaning tool for use in boreholes and pipes |
| 01/24/2013 | US20130020079 Treatment of subterranean wells with electrolyzed water |
| 01/24/2013 | CA2842235A1 Cleaning tool for use in boreholes and pipes |
| 01/23/2013 | EP2547861A1 A jetting tool for well cleaning |
| 01/23/2013 | CN202690009U Smashing-vibrating paraffin knife |
| 01/23/2013 | CN202689968U Autorotation paraffin cutting centralizer |
| 01/23/2013 | CN102888214A Emulsion-type oil well viscosity-breaking paraffin removing and inhibiting agent and application method thereof |
| 01/22/2013 | US8356662 Devices, systems and methods relating to down hole operations |
| 01/22/2013 | CA2701909C Apparatus and method for ratcheting stimulation tool |
| 01/17/2013 | WO2013009332A1 Methods of well cleanout, stimulation and remediation and thermal convertor assembly for accomplishing same |
| 01/17/2013 | WO2013007025A1 Valve |
| 01/17/2013 | US20130014950 Methods of Well Cleanout, Stimulation and Remediation and Thermal Convertor Assembly for Accomplishing Same |
| 01/16/2013 | CN102877815A Method for reducing guargum fracturing fluid residues |
| 01/16/2013 | CN101858205B Device for removing paraffin and washing well by gas heat carrier |
| 01/16/2013 | CN101701514B Wax scraper for inner wall of oil pipe |
| 01/15/2013 | CA2566653C Downhole ultrasonic well cleaning device |
| 01/09/2013 | CN202659214U Well mouth pumping medicine feeding device |
| 01/09/2013 | CN202659213U Cleaner for mine equipment |
| 01/09/2013 | CN101963052B Method for cleaning sediment in vertical well pocket in process of coalbed methane exploitation |
| 01/08/2013 | US8347963 Controlling transient underbalance in a wellbore |
| 01/03/2013 | WO2012083114A3 Compositions and methods relating to establishing circulation in stand-alone-screens without using washpipes |
| 01/03/2013 | US20130000916 Recyclable cleanout fluids |
| 01/03/2013 | US20130000910 Composition and Method Relating to the Prevention and Remediation of Surfactant Gel Damage |
| 01/03/2013 | US20130000888 Jetting tool for well cleaning |
| 01/02/2013 | CN202645524U Constant-current constant-temperature self-injecting type oil well feeding device |
| 01/02/2013 | CN202645510U Hydrodynamic wax scraper |
| 01/02/2013 | CN202645509U Fluid conditioner |
| 01/02/2013 | CN202645508U Rare earth strong magnetic wax controller |
| 01/02/2013 | CN202645498U Fluid hardening and tempering machine |
| 01/02/2013 | CN202645483U Compound anti-blockage device |
| 01/02/2013 | CN202641483U Gas-fired multifunctional superconducting mobile boiler |
| 01/02/2013 | CN102852483A Novel sucker rod centralizing paraffin scraper |
| 01/02/2013 | CN102851007A Drilling fluid and method |
| 01/02/2013 | CN101124384B Additives for hydrate inhibition in fluids gelled with viscoelastic surfactants |
| 01/01/2013 | US8343897 Scale inhibiting well treatment |
| 12/27/2012 | WO2012174600A1 A flushing tool and method of flushing perforated tubing |
| 12/27/2012 | WO2012151376A3 Chemical line flush systems |
| 12/27/2012 | US20120325488 Chemical-injection management system |
| 12/27/2012 | US20120325485 Method of removing inorganic scales |
| 12/26/2012 | CN202628056U Full-automatic dosing device for well mouth |
| 12/26/2012 | CN202628038U Non-rotating scraper |
| 12/26/2012 | CN202628037U Efficient electromagnetic paraffin control treater |
| 12/26/2012 | CN202628036U Cavitation-type automatically-unlocked downhole string descaling device |
| 12/26/2012 | CN102839946A Novel oil pump |
| 12/26/2012 | CN102839945A Movable oil fishing vehicle |
| 12/25/2012 | US8336626 Downhole magnetic retrieval devices with fixed magnetic arrays |
| 12/25/2012 | US8336624 Squeeze process for reactivation of well treatment fluids containing a water-insoluble adsorbent |
| 12/20/2012 | WO2012173860A2 Time-delay fluids for wellbore cleanup |
| 12/20/2012 | US20120318513 Corrodible downhole article and method of removing the article from downhole environment |
| 12/19/2012 | EP2535510A2 Sub-sea chemical injection metering valve |
| 12/19/2012 | CN202611666U Zero-clearance adaptive scraper assembly |
| 12/19/2012 | CN202611665U Producing well mechanical paraffin scraping device |
| 12/19/2012 | CN202611664U Elastic deviation-adjustment wax scraper |
| 12/19/2012 | CN202611663U Oil tube wax scraper with guiding function |
| 12/19/2012 | CN202611644U Water injection well completion string |
| 12/19/2012 | CN102828724A Method for preventing hydrogen sulfide gas in repairing work of hydrogen sulfide contained oil well |
| 12/18/2012 | US8334240 Compositions and methods for inhibiting the agglomeration of hydrates in a process |
| 12/13/2012 | WO2012170464A2 Apparatus and method for water well cleaning and rehabilitation |
| 12/12/2012 | CN202596671U Electromagnetic anti-wax device for oil well |
| 12/12/2012 | CN202596670U Pushing and sticking prevention paraffin removing plumb |