| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 08/31/2010 | US7784549 Self-propelled swabbing device and method |
| 08/26/2010 | WO2010095970A1 Method for removing paraffin from a device for treating and impregtating biological and histological samples |
| 08/26/2010 | WO2010094911A2 Fluid injection apparatus and method |
| 08/26/2010 | WO2010067052A3 Method and apparatus for removing plugs from subsea equipment through the use of exothermic reacting chemicals |
| 08/25/2010 | EP1792052B1 Integrated magnetic ranging tool |
| 08/25/2010 | CN201560746U Sand-bailing device of mechanical oil production well |
| 08/25/2010 | CN201560745U Ferromagnetic paraffin-inhibiting and antiscaling device |
| 08/25/2010 | CN201560744U Internal ball injection device |
| 08/25/2010 | CN201560743U Thick oil paraffin removal device of electric heating rod |
| 08/24/2010 | CA2642709C Methods for controlling particulate segregation in slurries |
| 08/19/2010 | US20100206567 Gel Capsules for Solids Entrainment |
| 08/18/2010 | CN201554445U Device for heat-cleaning wax-removing and output calibration of oil well |
| 08/18/2010 | CN201554429U Temperature-control electric heating paraffin cleaner for oil pipe |
| 08/18/2010 | CN201554428U Movable hot-washing device for oil well |
| 08/18/2010 | CN201554427U Rotational-flow emulsification wax-resisting device |
| 08/18/2010 | CN201554426U Pollution-free well-washing device |
| 08/18/2010 | CN101806203A High-pressure hydraulic rotary plug-removing device |
| 08/17/2010 | US7776931 Low dosage naphthenate inhibitors |
| 08/17/2010 | US7776930 adding inhibitor such as a surfactant having hydrophilic portion and oleophilic portion to a mixture of water and oil in an amount that is effective to inhibit cations in the water and organic acid in the oil from interacting along oil-water interface, reducing the pressure to release carbon dioxide gas |
| 08/17/2010 | US7776796 using recyclable-viscosity fluids containing at least a sphingan heteropolysaccharide (gellan gum, welan gum, diutan gum and rhamsan gum) and an optional salt, performing wellbore cleanout operation; reduce pumping frictional pressure |
| 08/17/2010 | CA2530147C Tagged scale inhibiting polymers, compositions comprising the same, and method for preventing or controlling scale formation |
| 08/12/2010 | WO2010089725A2 System and method for well clean-up |
| 08/12/2010 | US20100200238 Scale Inhibitors Compatible with Sandstone Acidizing |
| 08/12/2010 | US20100200226 Bottom hole assembly for wellbore operations |
| 08/12/2010 | US20100200219 Frame-less, Split Pipe Wiper |
| 08/11/2010 | CN201546841U Gas depressurizing system and natural gas paraffin vehicle |
| 08/11/2010 | CN201546681U Oil and water swab |
| 08/11/2010 | CN201546680U High-efficiency hydraulic-booster casing scraper |
| 08/11/2010 | CN201546679U Logging cable oil wiper |
| 08/11/2010 | CN201546678U Movable high frequency electromagnetic induction hot washing well device |
| 08/11/2010 | CN201546677U Heating type high-pressure displacing rock core oil-cleaned instrument |
| 08/11/2010 | CN201546663U Efficient water injection packer for washable well |
| 08/11/2010 | CN201546637U Ferromagnetic paraffin and abrasion resistant sucker rod |
| 08/10/2010 | US7770648 Completion method for well cleanup and zone isolation |
| 08/05/2010 | WO2010049723A9 Work string mounted cleaning tool and assembly method |
| 08/04/2010 | EP2212514A2 Downhole scraper |
| 08/04/2010 | CN201539232U Sunken well mud-cake flushing device |
| 08/04/2010 | CN201539231U Heating system preventing wax deposition of oil production well tubes |
| 08/04/2010 | CN201539226U Plug for wellhead paraffin removal |
| 08/04/2010 | CN201537614U Ball injection pigging device |
| 07/29/2010 | US20100187010 Process and apparatus for subterranean drilling |
| 07/29/2010 | US20100186962 Downhole scraping and/or brushing tool and related methods |
| 07/29/2010 | US20100186961 Alpha amino acid phosphonic acid compounds, method of preparation of use thereof |
| 07/29/2010 | US20100186958 Treating Liquids In Oil Extraction |
| 07/29/2010 | US20100186945 Magnet fixing device in a cleaning tool |
| 07/28/2010 | EP2209965A2 Method, apparatus, and magnet for magnetically treating fluids |
| 07/28/2010 | CN201535152U 管式化学清防蜡器 Paraffin-tube chemical device |
| 07/28/2010 | CN201535151U 离子碰撞防蜡防垢降粘处理器 Ion collisions viscosity paraffin scale processors |
| 07/27/2010 | US7762342 Apparatus for providing a temporary degradable barrier in a flow pathway |
| 07/27/2010 | US7762334 Eccentrically-disposed choke injector |
| 07/27/2010 | US7762131 System for predicting changes in a drilling event during wellbore drilling prior to the occurrence of the event |
| 07/27/2010 | CA2630020C Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well |
| 07/27/2010 | CA2341996C Wiper for tubing stripper |
| 07/22/2010 | US20100181064 Multi-Purpose Well Servicing Apparatus |
| 07/21/2010 | CA2652946A1 Cbm horizontal hydrostatic bailer |
| 07/20/2010 | US7757771 Wellhead seal unit |
| 07/20/2010 | CA2610766C Clean-up additive for viscoelastic surfactant based fluids |
| 07/14/2010 | CN201526277U Hot-wash oil-pumping pipe string of heavy oil well |
| 07/13/2010 | US7753128 Method and system for well production |
| 07/13/2010 | US7753125 Rotating, jet-biased wellbore cleaning tool |
| 07/08/2010 | US20100170676 Methods for cleaning out horizontal wellbores using coiled tubing |
| 07/08/2010 | CA2829903A1 Methods for cleaning out horizontal wellbores using coiled tubing |
| 07/07/2010 | CN201521282U Fully-automatic energy-saving drug cabinet |
| 07/07/2010 | CN101769141A Localization hot washing device |
| 07/01/2010 | WO2009071869A8 Method for removing hydrate plug from a flowline |
| 07/01/2010 | US20100163239 Apparatus and methods for inspecting and cleaning subsea flex joints |
| 06/30/2010 | EP2201212A1 Apparatus and method for ratcheting stimulation tool |
| 06/30/2010 | CN201517400U Automatic adjustable explosion-protection medicine adding device |
| 06/30/2010 | CN201517388U Underground warning paraffin prevention and blockage removing choke holder |
| 06/30/2010 | CN101105118B Solid anti-scaling agent and preparation process thereof |
| 06/29/2010 | US7743822 Snubber spool with detachable base plates |
| 06/24/2010 | WO2010048167A3 Wellbore cleaning devices |
| 06/24/2010 | WO2009063162A3 Method for stimulating a well using fluid pressure waves |
| 06/23/2010 | CN101748992A Paraffin removal unit for oil well in oil field |
| 06/22/2010 | US7740073 Wellhead seal unit |
| 06/22/2010 | CA2603751C Invert emulsion based completion and displacement fluid and method of use |
| 06/17/2010 | WO2010068111A1 Method and device for cleaning a cavity in a petroleum well |
| 06/17/2010 | WO2010067052A2 Method and apparatus for removing plugs from subsea equipment through the use of exothermic reacting chemicals |
| 06/16/2010 | CN201507281U Hollow sucker rod well flushing device |
| 06/16/2010 | CN201507256U Automatic filtration and back-flushing system for high-pressure water injection wells |
| 06/16/2010 | CN101737019A Release packer capable of well-flushing |
| 06/15/2010 | US7735558 Crosslinked acids comprising derivatized xanthan and subterranean acidizing applications |
| 06/15/2010 | US7735547 Wellbore cleaning tool and method |
| 06/15/2010 | CA2572913C Method and apparatus for downhole artificial lift system protection |
| 06/15/2010 | CA2570157C Method of treating oil or gas well with biodegradable emulsion |
| 06/15/2010 | CA2447556C Propellant treatment and continuous foam removal of well debris |
| 06/10/2010 | WO2010065210A1 Sub-sea chemical injection metering valve |
| 06/10/2010 | CA2744481A1 Sub-sea chemical injection metering valve |
| 06/09/2010 | CN201502359U Oil well geotherm self-energy wax-resistant device |
| 06/03/2010 | WO2010060403A2 Device and method for activating or purifying wells |
| 06/03/2010 | US20100132951 Controlled De-functionalization of Filtercakes and Other Downhole Compositions |
| 06/02/2010 | CN201496042U Integrated comprehensive magnetic wax-removing and descaling device for pigging |
| 06/02/2010 | CN201496035U Sand prevention bottom valve |
| 06/02/2010 | CN201496023U Paraffin removal device for sucker rod wellhead |
| 06/02/2010 | CN101718184A Foamed acid washing technological method for horizontal well |
| 06/01/2010 | CA2414071C Well maintenance equipment and procedure |
| 05/27/2010 | US20100126718 Cement evaluation method and tool |
| 05/27/2010 | CA2645092A1 Water transfer system |
| 05/26/2010 | CN201486541U Liquid level flow display device of reagent feeding barrel at mouth of oil well |
| 05/26/2010 | CN201486525U High-low pressure cleaning agent jet flow descaling device |