Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 37 - Methods or apparatus for cleaning boreholes or wells
Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129)
05/2010
05/26/2010CN201486521U Well control manifold pressure relief and cleaning device
05/26/2010CN201486514U Midway well cleaning packer
05/25/2010US7721806 Automatic chemical treatment system with integral flush fluid dispenser and method for using the same
05/19/2010CN201474671U Oil field water-injection well high pressure well cleaning vehicle
05/19/2010CN201474670U Oil layer protector
05/19/2010CN201474641U Set of eccentric wash over pipe, milling shoe, mill pyramid and milling rod workover tools
05/19/2010CN101711273A Well service compositions for consolidation of particulates in subterranean coal seams
05/14/2010WO2010132807A2 Packer retrieving mill with debris removal
05/14/2010CA2761304A1 Packer retrieving mill with debris removal
05/12/2010CN201460818U Paraffin cleaner for oil well
05/12/2010CN201460817U Drill stem mud scrapping tool
05/12/2010CN201460816U Automatic ball injecting device for oil well
05/12/2010CN201460815U Atmospheric-pressure ball-loading self-sealing type hermetical ball injecting device
05/12/2010CN201460814U Novel worm gear rotary jet device
05/12/2010CN201460801U Thermal flushing packer
05/12/2010CN101705803A Well-flushing oil-drainage device of oil pumping pipe column
05/11/2010US7712533 Method for treating a subterranean formation with water-in-oil emulsion
05/11/2010US7712520 Brush for a well bore casing
05/06/2010WO2010049723A1 Work string mounted cleaning tool and assembly method
05/06/2010US20100108331 Surface Equipment Assembly for Wellbore Cable
05/06/2010US20100108309 Downhole Fluid Injection Dispersion Device
05/05/2010CN101701514A Wax scraper for inner wall of oil pipe
05/05/2010CA2643251A1 Hydrocarbon fluid compositions and methods for using same
04/2010
04/29/2010WO2010048167A2 Wellbore cleaning devices
04/29/2010WO2010047757A1 Brush for a well bore casing
04/29/2010WO2010047708A1 Equalizing injection tool
04/29/2010WO2010047612A1 Fracture clean-up by electro-osmosis
04/29/2010US20100101797 Lubricating washpipe system and method
04/29/2010CA2741184A1 Wellbore cleaning devices
04/29/2010CA2741084A1 Fracture clean-up by electro-osmosis
04/28/2010CN201443381U Water injection well filter
04/28/2010CN201443363U Paraffin scraper of production string
04/28/2010CN201443362U Winding-type electromagnetic paraffin removal and prevention instrument utilizing sweep frequency
04/28/2010CN201443361U Hot washable single-well admixture adjusting device
04/28/2010CN201442813U Oil well test vehicle winch power device with electromagnetic stable speed
04/28/2010CN101699024A Paraffin removal technological method by washing oil wells with hot steam
04/27/2010US7703529 Gel capsules for solids entrainment
04/27/2010US7703516 Stimulating oilfields using different scale-inhibitors
04/22/2010WO2010043295A1 Particle-loaded wash for well cleanup
04/22/2010WO2010007434A3 Improved downhole tool
04/22/2010US20100096122 Wellbore Cleaning Devices
04/22/2010US20100096121 Brush for a well bore casing
04/22/2010CA2829901A1 Method of using polyquaterniums in well treatments
04/22/2010CA2738995A1 Particle-loaded wash for well cleanup
04/22/2010CA2641479A1 Method of using polyquaterniums in well treatments
04/21/2010EP2176504A1 Multi-purpose well servicing apparatus
04/20/2010US7699110 Flow diverter tool assembly and methods of using same
04/20/2010CA2492626C Flexible wellbore broach
04/20/2010CA2484947C Method for scale inhibition in oil wells
04/16/2010CA2641747A1 Chemical injection pump system powered by direct methanol fuel cell
04/14/2010EP2175003A1 Particle-loaded wash for well cleanup
04/14/2010EP2173831A1 Well treatment
04/14/2010CN201437698U Scale settler for oil/gas gathering and transportation pipeline
04/08/2010WO2010015861A3 Drill string mounted rotatable tool and cleaning method
04/06/2010US7690431 Methods for controlling migration of particulates in a subterranean formation
04/06/2010US7690426 Method of repairing failed gravel packs
04/01/2010WO2010010326A3 Pipeline entry system
03/2010
03/31/2010EP2167785A1 Magnet fixing device in a cleaning tool
03/31/2010CN201433742Y Pumped well steel tube filter tube well-washing device
03/31/2010CN201433741Y Flushing valve of hollow sucker rod
03/31/2010CN101684725A Control method and device of burner in oil-field hot-washing wax remover
03/30/2010US7686081 Squeeze process for reactivation of well treatment fluids containing diatomaceous earth
03/30/2010CA2584272C Treatment fluids comprising vitrified shale and methods of using such fluids in subterranean formations
03/30/2010CA2378952C Latex additive for water-based drilling fluids
03/25/2010US20100071909 Devices, Systems and Methods Relating to Down Hole Operations
03/24/2010CN201428431Y Tube inside wall scraping device
03/24/2010CN201428430Y Novel combined casing scraper
03/23/2010US7681644 Managing lost returns in a wellbore
03/23/2010CA2514592C Delayed phase changing agent for invert emulsion drilling fluid
03/23/2010CA2492895C Method for completing injection wells
03/23/2010CA2465176C Remedial system to flush contaminants from tubing string
03/18/2010WO2010008653A3 Apparatus for cleaning boreholes within substrates
03/18/2010US20100065275 Compositions and Methods for Hindering Asphaltene Deposition
03/18/2010US20100065264 Rotor underreamer, section mill, casing cutter, casing scraper and drill string centralizer
03/17/2010CN101672584A Heat exchanger and oil well paraffin removal device with same
03/16/2010US7677318 Well maintenance equipment and procedure
03/11/2010WO2009141754A3 Dynamic scale removal tool
03/11/2010US20100059228 Casing Wiping Dart With Filtering Layer
03/10/2010CN201420537Y Thermal washing paraffin removal device for oil wells
03/10/2010CN101666221A Oil well geothermal self-energy wax-proofing device
03/10/2010CN101666220A Control method for carbon-fiber thermal radiation paraffin removal and ultrasonic oil increase of production pipeline
03/09/2010US7673688 Casing wiping dart with filtering layer
03/04/2010US20100051283 Subterranean Methods Of Processing Hydrocarbon Fluid-Containing Deposits and Hydrocarbon Recovery Arrangements For Recovering Hydrocarbon-Containing Fluid From Hydrocarbon-Containing Deposits
03/03/2010CN201416417Y Electrical-heating paraffin removing device for stockless oil well
03/03/2010CN201416416Y Oil well wax removing control device
03/03/2010CN201416402Y Multiple-effect drifting device
03/03/2010CN101660398A Sucker rod well-head wax removal device
02/2010
02/28/2010CA2675738A1 Metal free crosslinking of galactomannan
02/25/2010WO2010020982A1 Method for impulse stimulation of oil and gas well production
02/25/2010WO2009128915A3 Devices, systems and methods relating to down hole operations
02/25/2010US20100044044 Controlling transient underbalance in a wellbore
02/25/2010CA2734631A1 Method for impulse stimulation of oil and gas well production
02/24/2010CN201412067Y Silt removing pipeline suitable for gas well drilling
02/23/2010US7665523 Treating tar sand or tar resident in well bore by contacting the tar sand with treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand, and allowing styrene-acrylate polymers to interact with tar to separate tar from sand
02/18/2010WO2010017899A2 Movable well bore cleaning device
02/17/2010EP2154329A1 Movable well bore cleaning device
02/17/2010CN101649729A Oil pipe connector, casing pipe connector and heat washing and paraffin removing system which are combined in use
02/11/2010WO2010016828A1 Method and apparatus for reducing deposits in petroleum pipes
02/11/2010WO2010015861A2 Drill string mounted rotatable tool and cleaning method
02/11/2010US20100032154 Scale Removal Assembly
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