Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129)
01/2009
01/21/2009CN101351616A Wellbore intervention tool
01/20/2009CA2473496C Bi-directional thruster pig apparatus and method of utilizing same
01/15/2009US20090014182 Drill pipe wiper system and associated method
01/15/2009US20090014167 Dual Point Adjustable Depth Air Sparging Well System
01/15/2009CA2692607A1 Multi-purpose well servicing apparatus
01/14/2009CN201180528Y Liquid preparation continuous instilment apparatus with automatic casing pressure control
01/14/2009CN201180527Y Descaling apparatus for inner wall of oil pipe
01/14/2009CN201180526Y Sand shovel for horizontal well sand pumping pump
01/14/2009CN201180525Y Apparatus used for oil well horizontal sand pumping
01/14/2009CN201180524Y System used for oil well horizontal sand pumping
01/14/2009CN201180523Y System used for oil well sand pumping
01/14/2009CN201180522Y Apparatus used for horizontal well sand pumping
01/14/2009CN201180521Y System used for horizontal well sand pumping
01/14/2009CN201180520Y Apparatus used for oil well sand pumping
01/14/2009CN201180519Y Down-hole stock solution solar heating and paraffin removal apparatus
01/14/2009CN201179515Y Integrated oil production apparatus cleaning machine
01/13/2009US7475730 Annular surface between the tubing and casing of an oil or gas well is contacted with a foamed well treatment containing a gas, a foaming agent and a liquid well treatment agent, such as a scale inhibitor, corrosion inhibitor, salt inhibitor, scale remover or biocide; destabilizing, coating
01/13/2009CA2479562C Downhole oilfield erosion protection by using diamond
12/2008
12/31/2008WO2009002185A1 Magnet fixing device in a cleaning tool
12/31/2008WO2009001253A1 Providing a cleaning tool having a coiled tubing and an electrical pump assembly for cleaning a well
12/31/2008EP1135353B1 A method for preventing or retarding the formation of gas hydrates
12/31/2008CN201173108Y Oil well down-hole liquid continuous medicament-adding device
12/31/2008CN201173107Y Wellhead continuous medicament-adding device
12/31/2008CN201173102Y Acoustic wave viscosity reduction oil well wax-proof device
12/31/2008CA2689577A1 Providing a cleaning tool having a coiled tubing and an electrical pump assembly for cleaning a well
12/30/2008CA2543408C Method for providing a temporary barrier in a flow pathway
12/30/2008CA2540988C Improved fracturing fluid and method of use
12/24/2008WO2008129160A3 Processing fluid for wells bored with oil-based muds in the form of a delayed effect water-in-oil emulsion
12/24/2008CN201168660Y Dosing atomizer
12/24/2008CN101328796A Environment protection type wax-proof anti-scaling viscosity reduction machine
12/23/2008US7468469 Dissolved oxygen releasing compound
12/23/2008US7467671 Drill bit with protection member
12/23/2008CA2525065C Wellbores utilizing fiber optic-based sensors and operating devices
12/18/2008WO2008152419A1 Well treatment
12/18/2008WO2008151447A1 Well service compositions for consolidation of particulates in subterranean coal seams
12/18/2008US20080308269 Washing a Cylindrical Cavity
12/18/2008CA2690253A1 Well service compositions for consolidation of particulates in subterranean coal seams
12/18/2008CA2690178A1 Well treatment
12/17/2008EP1540129B1 Downhole drill string having a collapsible subassembly
12/17/2008CN101324181A Integral locking-proof oil dragging pump
12/16/2008US7464760 Inhibiting reservoir souring using a treated injection water
12/11/2008WO2007143489A3 Composition for inhibiting formation of gas hydrates
12/11/2008US20080302522 System For Cyclic Injection and Production From a Well
12/10/2008EP1999338A1 Wellbore cleaning
12/10/2008CN201162508Y Sizing scraper
12/09/2008US7461699 Method for providing a temporary barrier in a flow pathway
12/04/2008US20080296024 Procedures and Compositions for Reservoir Protection
12/03/2008EP1996669A1 Additive for preserving the fluidity of fluids containing gas hydrates
12/03/2008CN201159148Y Sand pump of horizontal well
12/03/2008CN201159078Y Oil field multi-magnetic field constant temperature energy-saving electromagnetic paraffin removal-proof device
12/03/2008CN201159067Y Pipeline pickling device of water injection well
11/2008
11/27/2008US20080289827 Viscosified fluids for remediating subterranean damage
11/26/2008EP1994258A1 Hydrocarbon recovery techniques
11/26/2008EP1859125B1 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
11/25/2008US7455113 Downhole impeller device
11/25/2008US7455111 Water in oil emulsion and organophosphate dispersant increase permeability; unwanted particles deposited in the formation are dissolved or loosened by the outer phase of the water-in-oil emulsion; displacement of oil base drilling muds; removal of asphaltenes, paraffins, scale, heavy crude, and pipe dope
11/25/2008US7455109 Water flooding method
11/20/2008WO2007111789A3 Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut
11/18/2008US7451823 Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal
11/18/2008US7451819 Openhole perforating
11/12/2008CN201148843Y Releasing type water block pipe pillar capable of heat washing to protect oil layer
11/05/2008CN201144670Y Highly effective scaling tool for sleeve
11/05/2008CN201144669Y Anti-revolved electric scraping device for down-hole oil pipe
11/04/2008CA2344754C Coiled tubing wellbore cleanout
11/02/2008CA2594213A1 Composition for denaturing and breaking down friction-reducing polymer and for destroying other gas and oil well contaminants
10/2008
10/30/2008WO2008024547A3 Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal
10/29/2008CN201141296Y Multifunctional negative pressure oil production plug-removing oil-adding device
10/29/2008CN101294483A Self-washing wax-clearing method for electric heating oil well
10/29/2008CN100429379C Stainless steel seepage scale removal blowdown backwash fine filter for flooding well
10/23/2008US20080257541 Wellhead isolation tool including an abrasive cleaning ring
10/22/2008CN201137480Y Oil well borehole chemical agent deposition slow releasing device
10/22/2008CN201137466Y Helical type pumping rod anti-corrosive wear-resistant device
10/21/2008US7438797 Method of controlling asphaltene precipitation in a fluid
10/15/2008CN201133240Y Deep well block-proof swab
10/09/2008WO2008073986A3 Improved downhole scraping and/or brushing tool and related methods
10/09/2008US20080245523 Cleaning apparatus
10/08/2008CN201129168Y Dirty depositing device
10/08/2008CN101280675A Pumping rod wax scraping apparatus
10/01/2008CN201125713Y Physical cleaner for oilfield water injection
10/01/2008CN201125712Y Well drilling rocker inner scraper
10/01/2008CN201125711Y Pumping rod oil wiper assembly
10/01/2008CN201125710Y Full-automatic oil well self-heat power anti-wax viscosity reduction apparatus
10/01/2008CN201125685Y Oil water transfer control device
10/01/2008CN101275462A Horizontal well bailing system and method
09/2008
09/30/2008US7428921 Well treatment system and method
09/30/2008CA2476787C Integrated magnetic ranging tool
09/25/2008WO2008115866A2 Completion method for well cleanup and zone isolation
09/24/2008CN201121510Y Paraffin removing overhauling car
09/24/2008CN101270636A Oil well dirty-blocking device
09/24/2008CN101269374A Mixture gas generating device for cleaning oil production equipment
09/23/2008US7427584 Treating composition
09/23/2008US7426963 Piggable flowline-riser system
09/23/2008CA2481913C Apparatus and method for treating the borehole wall and expanding a screen
09/23/2008CA2409277C Wellbores utilizing fiber optic-based sensors and operating devices
09/18/2008US20080223580 Completion Method for Well Cleanup and Zone Isolation
09/17/2008CN201116464Y Well-washing wax-cleaning automatic control device
09/16/2008US7424916 Flameless hot oiler
09/11/2008US20080217019 Coiled tubing wellbore cleanout
09/10/2008CN101260793A Horizontal sand spade for oil well
09/09/2008CA2355676C Removal of oil and chloride from oil contaminated material
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