Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129)
09/2011
09/07/2011CN101358515B Well cleanout shunt
09/07/2011CN101324181B Integral locking-proof oil dragging pump
09/06/2011CA2450551C Technique for preventing deposition products from impeding the motion of a movable component
08/2011
08/31/2011CN201953333U 一种油水井防垢增注声波器 An oil by injection wells scale sonic device
08/31/2011CN102168539A Automatic mud scrape turntable capable of hanging wiring sleeve
08/31/2011CN102167969A Low temperature coated particles for use as proppants or in gravel packs, methods for making and using the same.
08/30/2011US8006762 System and method of controlling surge during wellbore completion
08/24/2011CN201943664U 撬装式电动掺水加药箱 Skid-mounted electric watered plus kits
08/24/2011CN201943663U 一种抽油杆防喷刮油器 One kind of sucker rod BOP scraping oil
08/24/2011CN102162345A Air relief valve
08/24/2011CN101328796B Environment protection type wax-proof anti-scaling viscosity reduction machine
08/23/2011US8003581 Iron control agent
08/23/2011US8003574 Inhibiting naphthenate solids and emulsions in crude oil
08/23/2011US8002038 Liquid carbon dioxide cleaning of wellbores and near-wellbore areas using high precision stimulation
08/23/2011US8002037 Downhole cleaning tool and method of use
08/23/2011DE202010003119U1 Vorrichtung zum Erzeugen von Hochdruck-Impulsen An apparatus for generating high-pressure pulses
08/18/2011US20110198075 In-pipe work device
08/17/2011CN201934062U 一种油嘴防蜡装置 One kind of glib Wax device
08/17/2011CN102155205A Automatic quantitative dosing device under oil well
08/17/2011CN102153997A Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide
08/16/2011US7997343 Dynamic scale removal tool and method of removing scale using the tool
08/11/2011WO2011095816A2 Improved downhole tool and method
08/10/2011CN201924888U 一种电磁清防蜡阻垢仪 An electromagnetic Paraffin scale instrument
08/10/2011CN201924846U 钻井用多功能气动卡瓦 Multifunction pneumatic drilling slips
08/10/2011CN102146780A Submersible linear motor respirator
08/09/2011US7994103 Method for controlled placement of chemicals and composition useful for practicing same
08/09/2011US7992636 Device and method for retrieving debris from a well
08/09/2011CA2645295C Hydrocarbon recovery techniques
08/04/2011US20110186355 Drill string mounted rotatable tool and cleaning method
08/04/2011US20110186287 Cleaning Device
08/03/2011CN201915906U 热采井光杆刮垢环 Thermal recovery wells bare dirt scraper ring
08/03/2011CN201915904U 变频电磁油管电热高效清蜡洗井装置 Frequency Electromagnetic tubing efficient electric wax flushing device
08/03/2011CN102140902A Underground explosive loading device and method for estimating flash vaporization depth of geothermal well
08/02/2011US7987906 Well bore tool
07/2011
07/28/2011WO2011091165A2 Wellbore filter screen and related methods of use
07/28/2011WO2011091157A2 Differential pressure wellbore tool and related methods of use
07/28/2011WO2011090481A1 Method and apparatus for making resistivity measurements in a wellbore
07/28/2011WO2011088576A1 Wellbore obstruction-clearing tool and method of use
07/28/2011CA2787145A1 Wellbore filter screen and related methods of use
07/27/2011CN201908626U Gyroscope cable cleaner
07/27/2011CN201908625U Electromagnetic wax proofing and viscosity reducing device for oil well
07/27/2011CN102134982A Multilayer gravel packing method and tool
07/27/2011CN102134981A Paraffin cleaning shuttle
07/26/2011US7984761 Openhole perforating
07/21/2011WO2011085753A1 Deep-well pump system
07/21/2011DE102010010181B3 Vorrichtung und Verfahren zum Erzeugen von Hochdruck-Impulsen Apparatus and method for generating high-pressure pulses
07/20/2011EP2345790A2 Downhole chemical injection tool
07/20/2011CN201902197U Novel oil well wax-proof device
07/20/2011CN101270636B Oil well dirty-blocking device
07/14/2011WO2011038107A3 Method and apparatus for injecting fluid in a wellbore
07/14/2011WO2011017105A3 Wellbore cleanout tool
07/14/2011US20110168404 Downhole tool
07/14/2011US20110168397 Apparatus for use in top filling of tubulars and associated methods
07/14/2011US20110168383 Cleaning Device
07/13/2011EP2343416A1 Borehole pump system
07/13/2011CN201896604U Self-operated integrated medicine feeding device
07/13/2011CN201896603U Clock program-controlled timed and quantitative chemical feeding device for oil well
07/12/2011CA2705597C Methods and compositions for acidization in a wellbore using an ester or polyester of a glycerol
07/12/2011CA2494200C Method for controlled placement of oilfield chemicals and composition useful for practicing same
07/07/2011WO2011080759A1 Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate
07/07/2011CA2786077A1 Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate
07/06/2011EP2340352A1 Work string mounted cleaning tool and assembly method
07/06/2011CN201891407U Novel paraffin scraper
07/06/2011CN201891406U Intensified magnetic wax control unit
06/2011
06/30/2011WO2011076935A1 Downhole tool for borehole cleaning or for moving fluid in a borehole
06/30/2011WO2011043872A3 Multi-point chemical injection system for intelligent completion
06/30/2011US20110155393 Generating power in a well
06/30/2011CA2785588A1 Downhole tool for borehole cleaning or for moving fluid in a borehole
06/29/2011EP2339110A1 Downhole tool for borehole cleaning or for moving fluid in a borehole
06/29/2011CN201883980U Anti-object falling mud scraping device
06/29/2011CN201883975U Drift size gauge tool for dredging, scraping and flushing well
06/29/2011CN201880717U Spherical-pig launching device
06/29/2011CN101082001B Aloe derived scale inhibitor
06/28/2011US7968500 Gas hydrate protection with heat producing two-component gas hydrate inhibitors
06/23/2011US20110146999 Method and Apparatus for Dewatering Using Methane
06/23/2011US20110146998 Methods for using or removing unused rock debris from a passageway through subterranean strata using rock breaking apparatus
06/22/2011EP2336485A2 Continuous slow dissolving chemical treatment for oil and gas wells
06/22/2011EP2334874A2 Device and method for activating or cleaning wells
06/22/2011CN201874534U Bidirectional rubber cup type sand filter puller
06/22/2011CN201874533U Intelligent electromagnetic paraffin-prevention device in oil field
06/22/2011CN201874532U Double-sealing oil drain valve
06/22/2011CN201874531U DC (direct current) electric paraffin cleaning hoist
06/22/2011CN201874530U Oil well and pipeline ground anti-wax device
06/16/2011WO2011035251A3 Open-hole mudcake cleanup
06/16/2011US20110139457 System and method for lateral wellbore entry, debris removal, and wellbore cleaning
06/15/2011CN201865632U Wax removing and preventing device for oil wells
06/15/2011CN201865631U Electric oil tube wax removing device
06/15/2011CN201865630U Wax-removing current collector for petroleum pipe column
06/15/2011CN201865629U Well control equipment cleaning device
06/15/2011CN102094609A Controllable constant-pressure medicament feeding device
06/15/2011CN102093868A Novel microbial wax removal and control system and application thereof
06/14/2011US7959743 Lithium salts of fatty alcohol sulphates for cleaning boreholes, boring devices and borings
06/14/2011US7958939 Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut
06/08/2011CN201857938U Oil tube scraper for steel wire operation
06/08/2011CN201857906U Nylon paraffin-scraping and centering device of sucker rod
06/07/2011US7954553 Use of low impact expansion to reduce flow friction
06/01/2011CN201851088U Annular pressure manual chemical agent adding device for oil well
06/01/2011CN201851087U Long-effect scale inhibition device
06/01/2011CN201851086U Frequency conversion paraffin cleaning hoist
06/01/2011CN201851085U Hollowing and anti-scaling device of pipeline
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