| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 05/13/2009 | CN100486914C Tagged scale inhibiting polymers, compositions comprising the same, and method for preventing or controlling scale formation |
| 05/12/2009 | US7531483 Energized fluids and methods of use thereof |
| 05/12/2009 | CA2511232C Apparatus and methods of cleaning and refinishing tubulars |
| 05/12/2009 | CA2447306C Packer fluid |
| 05/08/2009 | CA2644277A1 Flush-by system |
| 05/07/2009 | US20090114394 Method of Using Water-in-Oil Emulsion to Remove Oil Base or Synthetic Oil Base Filter Cake |
| 05/06/2009 | EP2054559A1 Well cleaning apparatus |
| 05/06/2009 | EP2054347A1 Treating liquids in oil extraction |
| 05/06/2009 | EP1252263B1 Inhibition of asphaltene deposition in crude oil production systems |
| 05/06/2009 | CN201232536Y Matching apparatus for pipeline joint and seal well washing for oilfield producing well |
| 05/06/2009 | CN101424174A Sucker rod wax scraping device |
| 05/06/2009 | CN101424168A Oil pipe lift-unloading system |
| 05/05/2009 | US7527103 Procedures and compositions for reservoir protection |
| 05/05/2009 | CA2313324C Surfactant compositions for wellbore operations, method of forming same and methods of using same |
| 04/30/2009 | WO2009053669A1 Apparatus and method for ratcheting stimulation tool |
| 04/30/2009 | WO2009052791A2 Device and method for activating or cleaning wells |
| 04/30/2009 | CA2701909A1 Apparatus and method for ratcheting stimulation tool |
| 04/29/2009 | CN201228527Y Strong magnet block-resistant paraffin cutting centralizer |
| 04/29/2009 | CN201228525Y Paraffin scraping centralizer for hollow sucker rod tub wheel |
| 04/28/2009 | CA2462412C Pressure-actuated perforation with continuous removal of debris |
| 04/23/2009 | WO2009051495A1 Method for wax removal and measurement of wax thickness |
| 04/23/2009 | CA2703407A1 Method for wax removal and measurement of wax thickness |
| 04/22/2009 | CN201225132Y Integral anti-clip oil well pump |
| 04/21/2009 | US7520340 Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 04/21/2009 | CA2481533C Method of foam emulsion well cleanout for gas well |
| 04/16/2009 | WO2009048935A2 Method, apparatus, and magnet for magnetically treating fluids |
| 04/16/2009 | WO2006121699A3 Flow through subassembly for a downhole drill string and method for making same |
| 04/16/2009 | WO2006104711A3 Method for removal of asphaltene, paraffin and/or scale from producing wells |
| 04/16/2009 | CA2702593A1 Method, apparatus, and magnet for magnetically treating fluids |
| 04/15/2009 | EP1787005B1 Magnetic assemblies for deposit prevention |
| 04/15/2009 | CN201221328Y Scraping and sweeping righting type sedimentation cup |
| 04/15/2009 | CN101408098A Timing automatic ball-throwing apparatus and method |
| 04/09/2009 | WO2009046077A2 Downhole scraper |
| 04/09/2009 | CA2841589A1 Downhole scraper |
| 04/09/2009 | CA2701560A1 Downhole scraper |
| 04/08/2009 | CN201218068Y Milling type drifting device |
| 04/08/2009 | CN101405364A Additive for preserving the fluidity of fluids containing gas hydrates |
| 04/07/2009 | US7514391 Alkyl polyglycoside; alkyl alcohol; inorganic acid; formic, acetic, propronic and citric acids; betaine surfactant; cationic surfactant fluorocarbon; relatively clean drill-in-fluid filter cake at the heel of the horizontal wellbore can be broken up quickly |
| 04/07/2009 | US7514390 Method for removing filter cake from a horizontal wellbore using acid foam |
| 04/07/2009 | US7513303 Wellbore cleanup tool |
| 04/02/2009 | WO2009040511A2 Deadleg |
| 04/02/2009 | CA2700698A1 Deadleg |
| 04/01/2009 | CN201215002Y Sucker rod wax scraping device |
| 03/31/2009 | US7510004 Method for treating an underground formation |
| 03/26/2009 | US20090078422 Enclosed circulation tool for a well |
| 03/26/2009 | US20090078408 Apparatus for Providing a Temporary Degradable Barrier in a Flow Pathway |
| 03/26/2009 | US20090078406 Method of Generating a Non-Plugging Hydrate Slurry |
| 03/25/2009 | CN201212380Y Paraffin control pumping-assisting booster |
| 03/25/2009 | CN201212379Y Novel drug feeder |
| 03/25/2009 | CN201212378Y Combination paraffin removal tool |
| 03/25/2009 | CN201212377Y Oil heating and charging machine |
| 03/24/2009 | CA2489051C Filter assembly having a bypass passageway and method |
| 03/20/2009 | CA2639314A1 Downhole gas influx detection |
| 03/20/2009 | CA2621041A1 Enclosed circulation tool for a well |
| 03/19/2009 | US20090071653 Composition and method for cleaning formation faces |
| 03/18/2009 | EP1694969B1 Transporting fluids through a conduit |
| 03/18/2009 | CN201209430Y Blowout preventing well-washing equipment |
| 03/18/2009 | CN201209429Y Wax removing and preventing device for electrical heated oil conduit |
| 03/18/2009 | CN101387191A Immobile string cleaner for vertical pipeline and method |
| 03/14/2009 | CA2639680A1 Methods, drilling fluids and drilling fluid additives for limiting tar sand accretion on metal surfaces |
| 03/14/2009 | CA2602746A1 Composition and method for cleaning formation faces |
| 03/12/2009 | WO2009032081A1 Enzyme enhanced oil recovery (eeor) for near well bore treatment of oil and gas with greater than 50% barrel of oil equivalent (boe) gas production |
| 03/11/2009 | EP1242556B1 Acid based micro-emulsions |
| 03/11/2009 | CN101382056A Shovel special for bailing in horizontal well |
| 03/10/2009 | US7500522 Fluid with asphaltene control |
| 03/06/2009 | CA2639384A1 Wellbore fluid treatment tubular and method |
| 03/04/2009 | EP1824804A4 Ion pair amphiphiles as hydrate inhibitors |
| 03/04/2009 | EP1402154A4 Hydrate reducing and lubrication system and method for a fluid flow system |
| 03/04/2009 | CN201202440Y Spiral type wax scraper |
| 03/04/2009 | CN201202439Y High pressure short radius omnidirectional right-angle movable elbow |
| 03/03/2009 | US7497278 Methods of degrading filter cakes in a subterranean formation |
| 03/03/2009 | US7497261 Contacting an emulsion of water, detergent;, hydrocarbon solvent; and acid with the interior of the oil well; one-step |
| 03/03/2009 | US7497260 Junk removal tool |
| 02/26/2009 | WO2008115866A3 Completion method for well cleanup and zone isolation |
| 02/26/2009 | US20090050326 Device and Method for Cleaning a Compressor |
| 02/26/2009 | US20090050325 Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production |
| 02/25/2009 | CN201198750Y Anti-high pressure reverse circulation valve |
| 02/25/2009 | CN201198749Y Leather cup self-sealing type reverse circulation valve |
| 02/24/2009 | US7493955 Well treating compositions for slow release of treatment agents and methods of using the same |
| 02/24/2009 | US7493949 Flow through subassembly for a downhole drill string and method for making same |
| 02/19/2009 | WO2009022935A1 Device for low-frequency acoustic effect on perforation area and oil- bearing bed in bottom-hole zone |
| 02/19/2009 | CA2694151A1 Treatment fluids comprising clarified xanthan and associated methods |
| 02/18/2009 | EP2024602A1 Energized fluid for generating self-cleaning filter cake |
| 02/18/2009 | CN201196064Y Two-chamber deliver device of oil gas well active metal paraffin and plug removal stick |
| 02/18/2009 | CN201196063Y Wax scraping apparatus of pumping rod |
| 02/10/2009 | US7487831 Downhole surge pressure reduction and filtering apparatus |
| 02/05/2009 | US20090032258 Openhole perforating |
| 02/04/2009 | CN201190555Y Rare-earth permanent magnet paraffin control machine |
| 02/04/2009 | CN101358515A Well cleanout shunt |
| 02/03/2009 | CA2497314C Method and apparatus for removing cuttings |
| 02/03/2009 | CA2374709C Method and apparatus for displacing drilling fluids with completion and workover fluids, and for cleaning tubular members |
| 01/29/2009 | WO2009015346A1 Methods and systems of planning a procedure for cleaning a wellbore |
| 01/29/2009 | US20090025927 Wellbore cleaning method & apparatus |
| 01/28/2009 | CN201187282Y Eccentric double-U type oil wiper of pumping rod |
| 01/28/2009 | CN201187281Y Composite field effect wax-proof ceramic oil nozzle |
| 01/28/2009 | CN101353955A Method for manufacturing chemical paraffin cleaner |
| 01/27/2009 | US7481273 wells may be treated with a water-in-oil emulsion for the removal or inhibition of unwanted particulates, including pipe dope, asphaltenes and paraffins |
| 01/22/2009 | WO2009011594A2 Method and device for cleaning and sealing a well |
| 01/22/2009 | CA2693099A1 Method and device for cleaning and sealing a well |
| 01/21/2009 | CN201184170Y Slow corrode scale inhibition tube |