| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 10/11/2006 | CN2825939Y Full-automatic chemicals charging apparatus |
| 10/11/2006 | CN2825938Y Mud scraping ring and scraping apparatus for drill rod external wall |
| 10/11/2006 | CN1846040A Method for stimulating an oilfield comprising using different scale-inhibitors |
| 10/10/2006 | US7117947 Well chemical treatment utilizing plunger lift delivery system |
| 10/05/2006 | WO2006104711A2 Method for removal of asphaltene, paraffin and/or scale from producing wells |
| 10/05/2006 | WO2005111370A3 Improved flexible cup for downhole devices |
| 10/05/2006 | WO2005049955A3 Low friction face sealed reaction turbine rotors |
| 10/05/2006 | US20060219441 Stabiliser, jetting and circulating tool |
| 10/05/2006 | US20060219410 Pipe cleaning tool |
| 10/05/2006 | US20060219409 Method for simultaneous removal of asphaltine, and/or paraffin and scale from producing oil wells |
| 10/04/2006 | EP1311336B1 Production of nitrogen for on-site injection in well clean out |
| 10/04/2006 | CN2823546Y Chemicals feeder for downhole |
| 10/04/2006 | CN1842496A Tagged scale inhibiting polymers, compositions comprising the same, and method for preventing or controlling scale formation |
| 10/03/2006 | US7114570 Reducing production and preventing migration of loose particulates; applying aqueous liquid and surfactant preflush solution, integrated consolidation fluid and afterflush fluid; noncatalytic |
| 09/27/2006 | CN2821150Y Electromagnetic effect wax removing and viscosity reducing device |
| 09/26/2006 | CA2400973C Downhole surge pressure reduction and filtering apparatus |
| 09/26/2006 | CA2320720C Apparatus and method for stimulating a subterranean formation |
| 09/21/2006 | WO2006097710A1 Multi-function downhole tool |
| 09/21/2006 | WO2006097706A1 Downhole apparatus |
| 09/21/2006 | US20060207796 Multi-function downhole tool |
| 09/20/2006 | EP1068426B1 Apparatus and method for stimulating a subterranean formation |
| 09/20/2006 | CN2818769Y Automatic superconductive thermal-wash paraffin remover of oil field for power-driven vehicle |
| 09/19/2006 | US7108065 Technique for preventing deposition products from impeding the motion of a movable component |
| 09/19/2006 | CA2482507C Self-propelled swabbing device and method |
| 09/19/2006 | CA2391914C Servicing system for wells |
| 09/14/2006 | DE102005009134A1 Biologisch abbaubare Gashydratinhibitoren Biodegradable gas hydrate |
| 09/08/2006 | WO2006093863A2 Method and composition for forming protective precipitate on cement surfaces |
| 09/08/2006 | WO2006092438A1 Use of water-soluble alkane sulfonic acids for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contaminants and/or contaminants containing carbonates during petroleum production |
| 09/08/2006 | CA2599211A1 Use of water-soluble alkane sulfonic acids for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contaminants and/or contaminants containing carbonates during petroleum production |
| 09/07/2006 | US20060196666 Contacting with an aqueous acid mixture of acetic acid and hydrofluoric acid to form the precipitate and flushing any remaining acid mixture from the surface; ammonium chloride preflush |
| 09/06/2006 | EP1697482A2 Oil-based drilling fluid comprising a non-polluting emulsifying system which can be used for any base oil and which is stable in respect of gas hydrates formation |
| 09/06/2006 | EP1373676B1 An apparatus for retrieving metal debris from a well bore |
| 09/06/2006 | CN2813886Y Sucked rod cleaner |
| 09/06/2006 | CN2813878Y Producing well pig |
| 08/30/2006 | EP1694969A1 Transporting fluids through a conduit |
| 08/30/2006 | CN2811556Y Downhole screw alternating ferromagnetic paraffin control device |
| 08/29/2006 | US7096950 Combined milling and scraping tool |
| 08/24/2006 | US20060185851 Method and apparatus for treating fouled wells |
| 08/24/2006 | US20060185847 Methods of placing treatment chemicals |
| 08/24/2006 | US20060185842 Rheology Modifiers |
| 08/22/2006 | US7093661 feeding power fluid to downhole turbines or engines in petroleum wells, controlling downhole separators |
| 08/16/2006 | EP1689971A1 Method and system for injecting a treatment fluid into a well |
| 08/16/2006 | EP1689965A2 Low friction face sealed reaction turbine rotors |
| 08/16/2006 | CN2806756Y Electric automatic paraffin cleaner |
| 08/09/2006 | CN2804379Y Spin paraffin bit |
| 08/08/2006 | US7086486 Flow control valve and method of controlling rotation in a downhole tool |
| 08/08/2006 | US7086470 System and method for wellbore clearing |
| 08/08/2006 | US7086469 Increasing reaction efficiency of acetic acid |
| 08/03/2006 | US20060169463 Downhole tool with actuable barrier |
| 08/01/2006 | US7082952 Well cleaning system |
| 07/26/2006 | CN2799854Y Well wall sludge scraper |
| 07/26/2006 | CN1266369C Method of improving permeability of underground petroleum-containing formation |
| 07/25/2006 | US7080688 Compositions and methods for degrading filter cake |
| 07/25/2006 | US7080686 Devices and methods for extraction, transportation and/or release of material |
| 07/20/2006 | WO2006075913A1 System for power supply to subsea installations |
| 07/20/2006 | US20060157249 Finger boot basket |
| 07/20/2006 | US20060157237 Well and method for regenerating a well |
| 07/19/2006 | CN1806089A Substances to stimulate the extraction of crudeoil and a method of processing them |
| 07/19/2006 | CN1804366A High-temperature high-pressure combustion system of sub-critical composite heat carrier generator |
| 07/12/2006 | CN2795439Y Drilling rod mud scraper |
| 07/06/2006 | US20060144620 Wellbore consolidating tool for rotary drilling applications |
| 07/06/2006 | US20060144594 Silicate-containing additives for well bore treatments and associated methods |
| 07/05/2006 | EP1676896A1 Process for transporting hydrates suspended in plant effluents using a non-polluting additiv |
| 07/05/2006 | EP1583887B8 Method and device for intensifying the permeability of ground layers close to bore holes and filter bodies and filter layers in wells and other production wells |
| 07/05/2006 | EP1252263A4 Inhibition of asphaltene deposition in crude oil production systems |
| 07/04/2006 | US7069995 Remedial system to flush contaminants from tubing string |
| 07/04/2006 | CA2441474C Composition and method for inhibition of formation of gas hydrates |
| 07/04/2006 | CA2318635C Method of cleaning a well bore prior to cementing |
| 07/04/2006 | CA2301771C Method and compound for inhibiting the plugging of conduits by gas hydrates |
| 07/04/2006 | CA2296357C Methods for deposition of materials in underground reservoirs |
| 06/29/2006 | WO2006069088A1 Method and system for cleaning a well bore |
| 06/29/2006 | WO2006068929A1 Method and apparatus for a cold flow subsea hydrocarbon production system |
| 06/29/2006 | WO2006029019A3 Method of removing an invert emulsion filter cake after the drilling process using a single phase microemulsion |
| 06/29/2006 | US20060137879 Combination of inorganic or organic acid, cationic fluorocarbon surfactant, C4-8 alkyl alcohol, betaine surfactant, alkyl polyglycoside, and water optionally containing ammonium chloride; the foam is stable at 200 degrees F. for at least 3 to 4 hours |
| 06/29/2006 | US20060137872 Method and device for intensifying the permeability of ground layers close to bore holes and filter bodies and filter layers in wells and other produciton wells |
| 06/28/2006 | EP1558834A4 Methods and apparatus for a subsea tie back |
| 06/28/2006 | CN2791298Y Crude-oil viscosity-reducing-liquid boosted feeding pump |
| 06/28/2006 | CN2791242Y Drill-pipe external-wall mud scraper |
| 06/22/2006 | WO2005124098A3 Magnet arrangement for use on a downhole tool |
| 06/22/2006 | US20060131023 Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well |
| 06/21/2006 | EP1448867B1 Thermoacoustic electric power generation |
| 06/20/2006 | US7063141 Apparatus for agitated fluid discharge |
| 06/20/2006 | CA2130591C Effective hydrocarbon blend for removing asphaltenes |
| 06/15/2006 | US20060124359 Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 06/14/2006 | EP1554464B1 Apparatus and method for cleaning and sealing a well borehole portion for formation evaluation |
| 06/14/2006 | EP1438481B1 Treating composition |
| 06/14/2006 | CN2787825Y Superconductive automatic hot water flushing and wax removing device for oil field |
| 06/13/2006 | US7059881 Spoolable composite coiled tubing connector |
| 06/13/2006 | US7059414 Acidizing stimulation method using a pH buffered acid solution |
| 06/13/2006 | US7059411 Process of using a propellant treatment and continuous foam removal of well debris and apparatus therefore |
| 06/10/2006 | CA2487380A1 Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 06/07/2006 | EP1666570A2 Formulations useful as asphaltene dispersants in petroleum products |
| 06/06/2006 | US7056060 Apparatus and method for remediation of low permeability formations |
| 06/06/2006 | US7055592 Toroidal choke inductor for wireless communication and control |
| 06/06/2006 | CA2431604C A method of circulating through a reciprocating downhole tubing pump and a reciprocating downhole tubing pump |
| 06/06/2006 | CA2171797C Composition effective in removing asphaltenes |
| 05/30/2006 | US7051813 Pass through valve and stab tool |
| 05/30/2006 | US7051587 Traction apparatus |
| 05/30/2006 | CA2289547C Conduit cleaning material and process |
| 05/25/2006 | US20060108117 Selectively operational cleaning tool |