Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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11/04/2003 | US6640897 Method and apparatus for through tubing gravel packing, cleaning and lifting |
10/30/2003 | US20030200995 Cleaning bore hole using high energy, low energy jets |
10/29/2003 | EP1357403A2 A method of generating electric power in a wellbore |
10/29/2003 | EP1357402A2 A light actuated system for use in a wellbore |
10/29/2003 | EP1357401A2 A system for controlling a downhole device in a wellbore |
10/23/2003 | WO2003087533A1 Apparatus and method for treating the borehole wall and expanding a screen |
10/23/2003 | WO2003087526A1 Stabiliser, jetting and circulating tool |
10/23/2003 | WO2003046333A3 Thermoacoustic electric power generation |
10/23/2003 | WO2000062074A8 Use of 13c-nmr to detect binding |
10/23/2003 | US20030198562 Submersible pump assembly for removing a production inhibiting fluid from a well and method for use of same |
10/23/2003 | US20030196816 Method for reduction of scale during oil and gas production and apparatus for practicing same |
10/22/2003 | EP1355170A2 A method of controlling production from a wellbore |
10/22/2003 | EP1355169A2 Method and apparatus for controlling chemical injection of a surface treatment system |
10/22/2003 | EP1355168A2 A method for avoiding injection induced unintentional fracture growth |
10/22/2003 | EP1355167A2 An injection well with a fibre optic cable to measure fluorescence of bacteria present |
10/22/2003 | EP1355166A2 An injection evaluation system |
10/22/2003 | CN2581687Y Sleeve scale remover |
10/16/2003 | WO2003085604A1 Servicing system for wells |
10/15/2003 | CN2580105Y Screw fixing type oil pump rod centralizer paraffin scraper |
10/15/2003 | CN2580091Y Anti-dropout centralizer |
10/15/2003 | CN1448612A Gasified reactive water-cleaning well squeeze-adding expand-proof agent test charging process |
10/14/2003 | US6633236 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters |
10/09/2003 | WO2003083253A1 Junk removal tool |
10/09/2003 | US20030188874 Treating apparatus and method for expandable screen system |
10/08/2003 | CN2578519Y Assembled wax remover |
10/08/2003 | CN2578510Y Sucker rods |
10/07/2003 | US6630428 Blend of fatty acid alkyl esters and lower alkyl glycol ethers; high flash point, low vapor pressure; environmentally safe |
10/02/2003 | US20030183382 Servicing system for wells |
10/01/2003 | CN1122750C Method for washing well by screw pump with hollow rotor |
09/16/2003 | CA2137007C Method for removing alkaline sulfate scale |
09/10/2003 | EP1341988A1 Bi-directional traction apparatus |
09/10/2003 | CN2571990Y Two-piece type stabilizer for sucker rod |
09/09/2003 | US6616716 Method of improving the flow properties of a crude oil or natural gas liquid |
09/09/2003 | US6615917 Computer controlled injection wells |
09/04/2003 | US20030164240 Controllable gas-lift well and valve |
09/03/2003 | EP1339937A2 Improved method for stimulation of liquid flow in a well |
09/03/2003 | CN2570450Y High power piston for oil-field water well washing |
09/03/2003 | CN2570438Y Multiple function pumping rod |
09/02/2003 | US6613899 Method for preventing deposits in oil extraction |
09/02/2003 | US6613154 Well cleaning apparatus and method for its use |
08/28/2003 | WO2003071245A2 Pressure reading tool |
08/27/2003 | CN2568801Y Short section wax scraping centering guide of self rotating sucker rod |
08/27/2003 | CN1119500C Method for preventing deposits in oil extraction |
08/26/2003 | US6611763 Method of early predicting paraffin deposition risks during production and transport |
08/26/2003 | US6609668 Cavitation and cleaning tool |
08/21/2003 | WO2003069112A1 Wellhead seal unit |
08/21/2003 | US20030155153 Pressure reading tool |
08/21/2003 | US20030155123 Method of treating reservoir zone of hydrocarbon producing well to inhibit water production problerms |
08/21/2003 | US20030155113 Production tool |
08/20/2003 | EP0853651B1 Cleaning compositions for oil and gas wells, lines, casings, formations and equipment and methods of use |
08/19/2003 | US6607607 Coiled tubing wellbore cleanout |
08/19/2003 | US6607031 Screened boot basket/filter |
08/14/2003 | WO2003067016A2 Bi-directional thruster pig apparatus and method of utilizing same |
08/13/2003 | CN2565977Y Tubular high magnetic field paraffin control device |
08/07/2003 | US20030145991 Subsea production system |
08/07/2003 | US20030145990 Rotary pump for well |
08/06/2003 | CN2564743Y Hot washing reservoir non-pressing device |
07/30/2003 | EP0910725B1 Wellbores utilizing fiber optic-based sensors and operating devices |
07/30/2003 | CN2563301Y Well flushing device for oil well conventional well-flushing |
07/30/2003 | CN2563300Y Controllable well head chemial adder |
07/30/2003 | CN1116495C Apparatus for perforating and stimulating subterranean formation |
07/29/2003 | US6598682 Reservoir communication with a wellbore |
07/29/2003 | CA2255536C Method and apparatus for treating long formation intervals |
07/23/2003 | CN2561924Y Magnetic chemical composite dewaxing device |
07/23/2003 | CN2561923Y Fixed point multi-stage hydraulic oscillating block eliminator |
07/22/2003 | US6596911 Composition and method for inhibition of formation of gas hydrates |
07/17/2003 | US20030131990 Wellbores utilizing fiber optic-based sensors and operating devices |
07/16/2003 | EP1327053A2 Method and pumping out means for improving the supply of water to a source or a water procurement well |
07/16/2003 | CN2560750Y Road-type solid anti-wax and pour depressing device for oil well |
07/16/2003 | CN1429963A Water injection well nitric acid powder-acid liquid system and acidification process |
07/15/2003 | US6593279 Anionic surfactant, a nonionic surfactant, a co- solvent, a solvent and an oxidizer; cleaning oil sludges and drilling mud residues from well cuttings, well formations and down hole and surface oil well drilling and production equipment. |
07/10/2003 | US20030127228 Well treatment tool and method of treating a well |
07/09/2003 | EP1226335B1 Asphaltenes monitoring and control system |
07/09/2003 | CN2559785Y Electric heating cleaning well apparatus |
07/09/2003 | CN1428498A Automatic screen-cleaning bottomhole sand-preventing machine driven by reservoir pressure |
07/08/2003 | US6588266 Monitoring of downhole parameters and tools utilizing fiber optics |
07/02/2003 | CN2558762Y Dropout- and blowout-preventing testing discharge swab for oil well |
07/02/2003 | CN2558761Y Eccentric self-adjusting wellhead pumping rod wax scraper |
07/02/2003 | CN2558760Y Improved automatic wax removal device for pumping well |
06/25/2003 | EP0819207B1 Method for improved water well production |
06/25/2003 | CN2557692Y Descaling robot for oil well |
06/19/2003 | US20030111226 Combination surge/pressure wash tool for oil wells and method therefor |
06/12/2003 | US20030106694 Method for disposal of liquid from gas wells |
06/11/2003 | CA2372987A1 Method of disposal of liquid from gas wells |
06/10/2003 | US6575239 Well cleaning tool |
06/05/2003 | WO2003046333A2 Thermoacoustic electric power generation |
06/05/2003 | US20030102163 Method for determining sweep efficiency for removing cuttings from a borehole |
06/03/2003 | US6571869 Downhole surge pressure reduction and filtering apparatus |
05/30/2003 | WO2003044317A1 Method of drilling a borehole into an earth formation |
05/29/2003 | US20030098159 Method and apparatus for unloading well tubing |
05/28/2003 | CN2553107Y Beam-pumping unit power-aid wellhead chemicals-feeder |
05/27/2003 | US6568472 Method and apparatus for washing a borehole ahead of screen expansion |
05/21/2003 | EP1311336A2 Non-cryogenic production of nitrogen for on-site injection in well clean out |
05/21/2003 | EP1171685A4 Method and apparatus for reducing fouling of injection and recovery wells |
05/21/2003 | EP1093541B1 Method for preventing deposits in oil extraction |
05/16/2003 | CA2363183A1 Production tool |
05/15/2003 | US20030089505 Downhole surge pressure reduction and filtering apparatus |
05/15/2003 | US20030089498 Controlling transient underbalance in a wellbore |
05/13/2003 | US6561280 Method of injecting tubing down pipelines |
05/13/2003 | US6561274 Combustible fuel cell can be placed in the tubular member below the fluid and ignited to generate gas |