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