| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 10/01/2009 | WO2009118549A1 Method and apparatus for cleaning a drill string |
| 10/01/2009 | US20090242190 Downhole Shock Absorber with Crushable Nose |
| 10/01/2009 | CA2719792A1 Downhole debris removal tool |
| 09/30/2009 | CN100545414C Method and system for injecting a treatment fluid into a well |
| 09/24/2009 | WO2009116869A2 Cleaning tool |
| 09/23/2009 | CN201314219Y Liquid-electric effect flushing contaminant releasing device |
| 09/22/2009 | CA2541947C Sand removal and device retrieval tool |
| 09/17/2009 | WO2009113863A1 An apparatus device for removing scale in a borehole installation |
| 09/17/2009 | WO2009112948A2 Methods and systems of treating a wellbore |
| 09/17/2009 | CA2853269A1 Methods and systems of treating a wellbore |
| 09/17/2009 | CA2718072A1 Methods and systems of treating a wellbore |
| 09/16/2009 | CN201310325Y Sand dragging and drifting device |
| 09/16/2009 | CN201310324Y Paraffin cleaner for oil wells of oil fields |
| 09/16/2009 | CN101532374A Device for sealing and cleaning cable wires at well head |
| 09/09/2009 | EP2097613A2 Improved downhole scraping and/or brushing tool and related methods |
| 09/09/2009 | CN101525986A Method for removing sulfate radical from injected water in oil field for anti-scaling |
| 09/09/2009 | CN101524693A Design method of timed heating ball collecting device |
| 09/09/2009 | CN100538002C Method for stimulating an oilfield comprising using different scale-inhibitors |
| 09/03/2009 | WO2009108068A1 Hydraulic brush for use in downhole operations |
| 09/03/2009 | WO2009065588A3 Apparatus and methods for well-bore wall surface finishing |
| 09/03/2009 | US20090218100 Wellbore cleaning |
| 09/03/2009 | US20090218097 Wellbore intervention tool |
| 09/03/2009 | US20090218092 Downhole cleaning tool |
| 09/02/2009 | CN201301692Y Sludge scrapper |
| 09/02/2009 | CN201301691Y Thermal washing and paraffin removal equipment |
| 09/01/2009 | CA2404894C New and improved method and apparatus for cleaning wellbore casing |
| 08/28/2009 | CA2627102A1 Fluid and method for agglomerating particles in a well service operation |
| 08/25/2009 | CA2465926C A traction apparatus |
| 08/20/2009 | WO2009102703A2 Self adjusting debris excluder sub |
| 08/20/2009 | US20090205832 Apparatus to clear control line in well |
| 08/20/2009 | US20090205831 Method and tool for unblocking a control line |
| 08/20/2009 | DE102008008250A1 Auf organischen Aminsulfaten basierende Reinigungsmittel für Bohreinrichtungen Based on organic amine sulphate detergent for drilling equipment |
| 08/20/2009 | CA2715904A1 Self adjusting debris excluder sub |
| 08/19/2009 | CN201292822Y High-pressure well washing system device for injection well |
| 08/19/2009 | CN201292821Y Solar inner magnetic type magnetic fluid paraffin cleaner |
| 08/19/2009 | CN201292795Y Gusher paraffin removal bulkhead anti-dropping press cap |
| 08/19/2009 | CN101509361A Remediable scale scraping packer |
| 08/14/2009 | CA2652479A1 Apparatus to clear control line in well |
| 08/13/2009 | US20090200017 Method and device for treating bottom-hole zones of oil-and-gas-bearing formations |
| 08/12/2009 | CN201288533Y Combusting device control appliance in oil field thermal wax cleaning equipment |
| 08/12/2009 | CN201288532Y Moving type electric heating steam cleaning defrosting apparatus |
| 08/11/2009 | US7572371 Fluid conditioning system and method |
| 08/11/2009 | US7571768 Method and apparatus for perforating a casing and producing hydrocarbons |
| 08/11/2009 | US7571644 Characterizing a reservoir in connection with drilling operations |
| 08/06/2009 | WO2009073438A3 Breaker fluids and methods of using the same |
| 08/05/2009 | EP2084139A2 Oxazolidinium compounds and use as hydrate inhibitors |
| 08/05/2009 | CN201284640Y Oil tube cleaner for oil-field flooding well |
| 08/05/2009 | CN201284639Y Logging steel wire arranging oil scraper |
| 08/05/2009 | CN101501281A Well cleaning apparatus |
| 08/05/2009 | CN101498204A Balance type step-by-step releasable flushing packer |
| 07/30/2009 | WO2009072091A3 Cuttings bed detection |
| 07/30/2009 | US20090192059 Precursor compositions for ceramic products |
| 07/30/2009 | US20090188665 Monitoring of Downhole Parameters and Tools Utilizing Fiber Optics |
| 07/29/2009 | CN201280916Y Composite device for magnetic antiscaling machine |
| 07/29/2009 | CN201280915Y Anti-pollution high pressure resistant difference jack well thermal-washing pipe column |
| 07/29/2009 | CN201280914Y Quick replacing device for wellhead of oil recovery apparatus |
| 07/29/2009 | CN201280913Y Self-adapting wire rope oil scraper |
| 07/22/2009 | EP2080566A1 Device and method for cleaning boreholes |
| 07/22/2009 | CN201277009Y Dual-fuel paraffin removal vehicle |
| 07/22/2009 | CN100516454C Method of controlling asphaltene precipitation in a fluid |
| 07/16/2009 | US20090178799 Downhole well cleaning tool |
| 07/15/2009 | EP1913233B1 System for cyclic injection and production from a well |
| 07/15/2009 | CN201273175Y Sand-proof column plug removing device |
| 07/15/2009 | CN201273174Y Self-pressing type medicine-adding apparatus |
| 07/14/2009 | US7559374 Dual function cleaning tool |
| 07/10/2009 | CA2620319A1 Downhole well cleaning tool |
| 07/09/2009 | WO2009052791A3 Device and method for activating or cleaning wells |
| 07/09/2009 | US20090173501 Borehole Cleaning Using Downhole Pumps |
| 07/08/2009 | EP1792052A4 Integrated magnetic ranging tool |
| 07/08/2009 | CN201269082Y Oil wiper for pumping rod |
| 07/08/2009 | CN201269081Y Copper-based catalyst alloy down-hole antiscaling device |
| 07/08/2009 | CN201269080Y Strong-magnetic anti-corrosion and antiscaling device for oil-water well |
| 07/01/2009 | EP2074280A1 Placement of fluids in ground by pulse-injection |
| 07/01/2009 | CN201265394Y Down-hole telescopic sand-draining pump |
| 07/01/2009 | CN101469605A Multi-magnetic field constant temperature energy-saving electromagnetic de-waxing apparatus for oilfield |
| 07/01/2009 | CN100507203C Bi-directional thruster pig apparatus and method of utilizing same |
| 06/25/2009 | DE102007060651B3 Asphalten-Dispergatoren auf Basis von Phosphonsäuren Asphaltene dispersants based on phosphonic |
| 06/24/2009 | EP2072561A1 Route treatment |
| 06/18/2009 | US20090151936 System and Method for Monitoring Scale Removal from a Wellbore |
| 06/17/2009 | CN201258726Y Wax melting agent instillation machine |
| 06/17/2009 | CN201258725Y Ground paraffin removal device for oil well |
| 06/17/2009 | CN201258724Y Electromagnetical anti-wax machine |
| 06/11/2009 | WO2009073438A2 Breaker fluids and methods of using the same |
| 06/11/2009 | WO2009072091A2 Cuttings bed detection |
| 06/11/2009 | WO2009071869A1 Method for removing hydrate plug from a flowline |
| 06/11/2009 | US20090145661 Cuttings bed detection |
| 06/11/2009 | CA2707263A1 Breaker fluids and methods of using the same |
| 06/10/2009 | EP2067926A1 Method for removing hydrate plug from a flowline |
| 06/09/2009 | CA2645799A1 Staged actuation shear sub for use downhole |
| 06/04/2009 | WO2009046077A3 Downhole scraper |
| 06/04/2009 | US20090139723 Filtercake Removal |
| 05/28/2009 | WO2009040511A3 Deadleg |
| 05/28/2009 | US20090133883 Method for retrofitting a downhole drill string with a flow through subassembly and method for making same |
| 05/27/2009 | EP2061949A1 Methods and compositions for thermally treating a conduit used for hydrocarbon production or transmission to help remove paraffin wax buildup |
| 05/21/2009 | US20090126935 Gas lift plunger arrangement |
| 05/21/2009 | US20090126933 Device and method for retrieving debris from a well |
| 05/19/2009 | US7534745 Gelled invert emulsion compositions comprising polyvalent metal salts of an organophosphonic acid ester or an organophosphinic acid and methods of use and manufacture |
| 05/19/2009 | CA2481639C Improving reservoir communication by creating a local underbalance and using treatment fluid |
| 05/13/2009 | CN201236673Y Oil well magnetic anti-waxing apparatus |
| 05/13/2009 | CN201236633Y Mandrel mud collar of downhole tool |