| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 02/17/2011 | WO2010118439A3 Interference-fit stop collar and method of positioning a device on a tubular |
| 02/17/2011 | US20110036563 Coupling between wellbore tools having central transmission shafts |
| 02/17/2011 | CA2769686A1 Downhole device |
| 02/16/2011 | EP2283207A1 Downhole filter tool |
| 02/16/2011 | CN201747331U Horizontal well mud cake cleaner |
| 02/16/2011 | CN201747330U Digital typing intelligent medicine adding device |
| 02/16/2011 | CN201747329U Sand cleaning tool of large-inclination and large-well diameter absorption well |
| 02/15/2011 | US7886826 Gel capsules for solids entrainment |
| 02/15/2011 | CA2437522C Drilling fluids, drilling fluids additives and methods useful for limiting tar sands accretion on metal surfaces |
| 02/10/2011 | US20110030951 Integrated fluid filtration and recirculation system and method |
| 02/09/2011 | CN201738880U Scale scraping device of oil pipe |
| 02/09/2011 | CN201738879U Descaling cutter for inner wall of oil well pipe |
| 02/09/2011 | CN201738822U String for upper horizontal well cementation and lower screen pipe gravel pack completion |
| 02/09/2011 | CN101970793A Methods and systems of treating a wellbore |
| 02/09/2011 | CN101967960A Dirt removal protection device for underground pumping unit |
| 02/09/2011 | CN101250990B Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
| 02/03/2011 | WO2011014057A1 A method and system for removing organic deposits |
| 02/02/2011 | CN201730592U Automatic mud-cleaning device for long-screw piling and pore-forming drill |
| 02/02/2011 | CN201730591U Tube milling device for oil drilling |
| 02/02/2011 | CN201730554U Novel oil pipe hot washing device |
| 02/02/2011 | CN101963054A Underground synchronous developing and imaging device and use method thereof |
| 02/02/2011 | CN101963052A Method for cleaning sediment in vertical well pocket in process of coalbed methane exploitation |
| 02/01/2011 | US7879767 A gelled aqueous viscoelastic treating fluid of an aqueous base fluid, a non-ionic amine oxide viscoelastic surfactant gelling agent; and the aqueous viscoelastic treating fluid additive soluble in the fluid and consisting of polyamines, polyvinyl alcohols, and/or polycaprolactams; fracturing oil wells |
| 02/01/2011 | US7878247 Methods for cleaning out horizontal wellbores using coiled tubing |
| 02/01/2011 | US7878238 Cleaning apparatus |
| 02/01/2011 | CA2593876C Apparatus and methods for delivering chemicals into an underground well |
| 01/27/2011 | WO2010139931A3 Method and apparatus for removing a blockage from a flowline |
| 01/27/2011 | US20110017464 Wellbore debris cleanout with coiled tubing using degradable fibers |
| 01/27/2011 | US20110017463 Use of a spoolable compliant guide and coiled tubing to clean up a well |
| 01/26/2011 | CN201723204U Rubber drill rod mud scraping disk |
| 01/26/2011 | CN201723203U Sucker rod oil-scraping collector |
| 01/26/2011 | CN201723202U Pumping rod paraffin scraping and collar detecting device |
| 01/25/2011 | US7874355 Methods and apparatus for removing deposits on components in a downhole tool |
| 01/24/2011 | CA2710730A1 Wellbore debris cleanout with coiled tubing using degradable fibers |
| 01/20/2011 | WO2010137989A3 "heat transport dead leg" |
| 01/20/2011 | WO2010111226A3 A composition and method for inhibiting agglomeration of hydrates in pipelines |
| 01/20/2011 | US20110011593 Method and system for circulating fluid in a subsea intervention stack |
| 01/19/2011 | CN201714362U Underground intelligent chemical injection device |
| 01/19/2011 | CN201714341U High efficiency hot washing anti-pollution pipe string |
| 01/19/2011 | CN1884791B Permanent magnetic casing type adhesion reducing and wax preventing device for down-hole oil production |
| 01/19/2011 | CN101949285A Screen pipe completed well gel-breaking tester |
| 01/18/2011 | US7871964 Compositions and methods for mitigating or preventing emulsion formation in hydrocarbon bodies |
| 01/18/2011 | US7870897 Dual function cleaning tool |
| 01/13/2011 | WO2010120466A3 Slickline conveyed bottom hole assembly with tractor |
| 01/12/2011 | EP2272800A1 Detoxification of water containing onium compounds |
| 01/12/2011 | CN201705319U Skid-mounted closed dosing device |
| 01/12/2011 | CN201705300U Paraffin removal well-flushing car |
| 01/12/2011 | CN201705299U Anti-injection self-sealing paraffin knife for sucker rod |
| 01/12/2011 | CN201705298U Oil-water well wellhead cleaning and paint spraying device |
| 01/12/2011 | CN201705297U Portable wellhead cleaning device of direct-current power oil water well |
| 01/12/2011 | CN201705291U Hot washing wax cleaning underground check valve of hollow sucker rod |
| 01/12/2011 | CN201705277U Sequential unpacking well washing device of oil well packer |
| 01/12/2011 | CN201705236U Eccentric wear prevention oil increase device with self-rotating pumping rod |
| 01/12/2011 | CN101942983A Process for performing well completion by utilizing biological completion fluid |
| 01/11/2011 | US7866390 Casing make-up and running tool adapted for fluid and cement control |
| 01/06/2011 | WO2011002943A2 Water treatment systems and methods |
| 01/05/2011 | EP2268892A1 Method and apparatus for cleaning a drill string |
| 01/05/2011 | EP2268891A2 Methods and systems of treating a wellbore |
| 01/05/2011 | CN101936951A Method for detecting mechanical system of drilling machine well mouth drill stem flux leakage detector |
| 01/05/2011 | CN101936146A Self-cleaning sand discharging device of down-hole tools |
| 01/05/2011 | CN101549349B Delivery pipeline cleaning device |
| 01/04/2011 | US7861784 System and method of controlling surge during wellbore completion |
| 12/29/2010 | WO2010151176A2 Method and device for eliminating paraffin deposits and hydrate plugs in oil and gas wells |
| 12/29/2010 | WO2010149643A1 A completion assembly and a method for stimulating, segmenting and controlling erd wells |
| 12/29/2010 | WO2010129178A3 System and method of providing high pressure fluid injection with metering using low pressure supply lines |
| 12/29/2010 | CN201687437U Oil pipe paraffin scraper capable of preventing mutual abrasion between sucker rod and oil pipe |
| 12/29/2010 | CN201687436U Multi-joint cleaner of oilfield high-pressure water injection pipe network |
| 12/29/2010 | CN201687413U Pumping rod rotary coupling |
| 12/28/2010 | US7857058 Downhole swivel joint assembly and method of using said swivel joint assembly |
| 12/23/2010 | US20100319935 Method and device for a running tool |
| 12/22/2010 | CN201679481U Steam hot washing device |
| 12/22/2010 | CN201679480U Oil pipe hot cleaning device |
| 12/22/2010 | CN101925719A Breaker fluids and methods of using the same |
| 12/21/2010 | US7854263 ammonium laureth sulfate anionic surfactant and nonionic surfactants of differing hydrophilic-lipophilic balance including alkyl polyoxyethylene glycol and/or ethoxylated tridecanol; removing oil based fluid mud cake from a well wall; stabilizers for cement slurries |
| 12/21/2010 | CA2498742C System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 12/16/2010 | WO2010143000A2 Debris removal method and assembly |
| 12/16/2010 | US20100314119 Apparatus and methods for well-bore wall surface finishing |
| 12/16/2010 | US20100314110 Method of treating a subterranean formation using a rheology model for fluid optimization |
| 12/16/2010 | US20100314095 Hot anti-wax knife |
| 12/16/2010 | CA2764756A1 Debris removal method and assembly |
| 12/15/2010 | CN201671600U Paraffin scraper for square of sucker rod |
| 12/15/2010 | CN201671590U Compressed water injection well flushing packer |
| 12/15/2010 | CN201671564U Suction-assistant, centralizing and retaining device for sucker rod |
| 12/15/2010 | CN101915071A Tool for filling and backwashing oil well |
| 12/15/2010 | CN101196104B Rotation preventing electric dirty shaving device for down-hole oil tube |
| 12/09/2010 | WO2010140895A1 Landing sub for a wiper |
| 12/09/2010 | US20100307746 Methods of cleaning wellbores and analyzing wellbore fluids |
| 12/09/2010 | US20100307738 Well cleaning apparatus |
| 12/08/2010 | EP2257688A1 An apparatus device for removing scale in a borehole installation |
| 12/07/2010 | US7845410 Openhole perforating |
| 12/07/2010 | CA2543426C Methods for inhibiting hydrate blockage in oil and gas pipelines using simple quaternary ammonium and phosphonium compounds |
| 12/02/2010 | WO2010138020A1 Well jet device for removing sand plugs from bottom holes in the conditions of abnormally low formation pressures |
| 12/02/2010 | US20100300967 Breaker fluids and methods of using the same |
| 12/02/2010 | US20100300694 Method for producing an organic composition containing an n-nonyl ether |
| 12/02/2010 | US20100300684 Continuous downhole scale monitoring and inhibition system |
| 12/01/2010 | CN201661277U Multifunctional pumping well intensifying device |
| 12/01/2010 | CN201661276U Pipe fitting inner wall scale removing knife tool flushing device |
| 12/01/2010 | CN201661275U Cutter for removing alkaline scale on inner wall of oil pipe |
| 12/01/2010 | CN201661274U Continuous well cleanup device of water injection well |
| 12/01/2010 | CN101899963A Bidirectional plastic cup-type sand filtering swab and sand blockage-preventing method |