| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
|---|
| 10/07/2004 | WO2004085787A2 Dual function cleaning tool |
| 10/07/2004 | US20040194961 Reducing production and preventing migration of loose particulates; applying aqueous liquid and surfactant preflush solution, integrated consolidation fluid and afterflush fluid; noncatalytic |
| 10/06/2004 | CN2646377Y Electric paraffin shaving device of oil field electric pump well |
| 10/06/2004 | CN2646376Y Double helix water well cleaner |
| 10/06/2004 | CN2646375Y Double intense magnetic field oil well antiscaling equipment |
| 10/06/2004 | CN1170051C Apparatus and method for removing wax from internal surface of sleeve pipe by high-pressure steam and compressed air |
| 09/30/2004 | WO2004038178A9 Apparatus and method for cleaning and sealing a well borehole portion for formation evaluation |
| 09/29/2004 | CN2644667Y Safety device of wax removal winch for oil well |
| 09/29/2004 | CN2644666Y Automation hand-motion interchanging device of wax removal winch for oil well |
| 09/29/2004 | CN2644665Y Wax removal winch for oil well |
| 09/28/2004 | CA2423645A1 Manifold device and method of use for accessing a casing annulus of a well |
| 09/23/2004 | US20040186024 Viscous well treating fluids and methods |
| 09/22/2004 | EP1460121A1 Well treating fluids |
| 09/21/2004 | US6792796 Electrical generation of alkaline conditions |
| 09/16/2004 | WO2004079156A1 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 09/16/2004 | US20040177967 Packer with integral cleaning device |
| 09/16/2004 | US20040177951 Sand removal and device retrieval tool |
| 09/14/2004 | US6789626 Apparatus and method for cleaning debris from wells |
| 09/14/2004 | CA2126968C Use of selected inhibitors against the formation of solid organic-based incrustations from fluid hydrocarbon mixtures |
| 09/09/2004 | US20040173353 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 09/09/2004 | DE10237674B4 Verfahren und dazugehörige Einrichtungen zur Entfernung von Inkrustationen und Biofilmen in Fluidsystemen Procedures and associated equipment to remove incrustations and biofilms in fluid systems |
| 09/07/2004 | US6787758 Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/02/2004 | US20040168811 Subsea chemical injection unit for additive injection and monitoring system for oilfield operations |
| 09/02/2004 | US20040168806 Downhole tool |
| 09/02/2004 | US20040168800 Method and apparatus for formation damage removal |
| 09/01/2004 | CN1524924A Environment-friendly type clear paraffin control thinning agent |
| 09/01/2004 | CN1524923A Oil well cleaning antiscale |
| 08/25/2004 | EP1448867A2 Thermoacoustic electric power generation |
| 08/25/2004 | CN2635917Y Back wash device for mechanical sand prevention water injection well |
| 08/25/2004 | CN2635909Y Rotary impact type mechanical wax scraper |
| 08/25/2004 | CN2635908Y Pipe column cleaner for water injection well |
| 08/19/2004 | US20040162456 modifying the rheological properties of the suspensions of crystals of hydrates by the addition of additives such as polymers which are soluble in the hydrocarbons |
| 08/19/2004 | US20040159434 Providing a low pressure condition in a wellbore region |
| 08/19/2004 | US20040159432 Creating an underbalance condition in a wellbore |
| 08/19/2004 | CA2457281A1 Method of preventing sedimentation of gas hydrate crystals |
| 08/17/2004 | US6776231 Casing scraper |
| 08/12/2004 | US20040154800 Well servicing apparatus and method |
| 08/12/2004 | US20040154799 Combined scale inhibitor and water control treatments |
| 08/11/2004 | EP0986691B1 Method for cleaning conduits in hydrocarbon wells |
| 08/11/2004 | CN2632310Y Casing scraper |
| 08/11/2004 | CN2632309Y Oil pipe scraper of water injection well |
| 08/10/2004 | US6772840 Methods and apparatus for a subsea tie back |
| 08/05/2004 | WO2004018118A3 Methods and associated devices for removing incrustations and biofilms in fluid systems |
| 08/04/2004 | EP1442197A1 Device for cleaning an inner pipe inserted into a gas or oil conveying boring |
| 08/04/2004 | CN2630471Y Rapid-mounted paraffin-scraping type nylon sucker rod centralising device |
| 08/03/2004 | US6769488 Well treatment tool and method of treating a well |
| 07/29/2004 | WO2004063524A1 Method and device for intensifying the permeability of ground layers close to bore holes and filter bodies and filter layers in wells and other production wells |
| 07/29/2004 | US20040144530 Toroidal choke inductor for wireless communication and control |
| 07/29/2004 | DE10301338B3 Increasing permeability of productive strata and filter layers close to well borehole, inserts generator superimposing pressure pulses on production flow |
| 07/28/2004 | CN1159407C Composition for washing oil-well, piepline, sleeve pipe, stratum and equipments and using method thereof |
| 07/22/2004 | WO2003071245A3 Pressure reading tool |
| 07/22/2004 | US20040140097 Pressure reading tool |
| 07/21/2004 | EP1438366A1 Drilling fluids |
| 07/21/2004 | CN2627211Y Screw-type water injection well eccentric mandrel scaler |
| 07/21/2004 | CN1514105A Technology of implementing oil pumping machine well avoiding wax eliminating and raising system efficiency using flow modifying agent |
| 07/20/2004 | US6763888 Removal of a filter cake or biofilm; an ester and a polymer breaker selected from the group consisting of oxidants and enzyme breakers, such that the ester hydrolyses to produce an organic acid to dissolve acid soluble material present |
| 07/20/2004 | US6763884 Method for cleaning and sealing a well borehole portion for formation evaluation |
| 07/15/2004 | WO2004025067A3 Reducing paraffin, asphaltene, and hydrate accumulations in wells |
| 07/15/2004 | WO2004024309A3 System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 07/15/2004 | US20040138068 Antiscaling agent for well bores; sustained release |
| 07/15/2004 | US20040134651 Well cleaning apparatus |
| 07/08/2004 | WO2004057152A1 Method for providing treatment chemicals in a subterranean well |
| 07/08/2004 | WO2004013446A3 Self-excited drill bit sub |
| 07/07/2004 | EP1434980A1 Real-time on-line sensing and control of mineral scale deposition from formation fluids |
| 07/07/2004 | EP1102914B1 Downhole scraper assembly |
| 07/07/2004 | CN2623870Y Novel paraffin cleaner for pumping well |
| 07/06/2004 | US6758276 Method and apparatus for displacing drilling fluids with completion and workover fluids, and for cleaning tubular members |
| 07/06/2004 | US6758275 Method of cleaning and refinishing tubulars |
| 07/01/2004 | WO2004055317A2 Well bore cleaning and tubular circulating and flow-back apparatus |
| 07/01/2004 | CA2507778A1 Well bore cleaning and tubular circulating and flow-back apparatus |
| 06/30/2004 | CN1508381A Pumping well non-pumping hydraulic oscillating deblocking process |
| 06/30/2004 | CN1508213A Washing and deblocking agent for oil well |
| 06/29/2004 | US6755252 Downhole surge pressure reduction and filtering apparatus |
| 06/29/2004 | CA2160258C Method for placement of a scale inhibitor in a formation |
| 06/24/2004 | WO2004053290A1 Downhole tool with actuable barrier |
| 06/24/2004 | US20040118565 Bi-directional thruster pig apparatus and method of utilizing same |
| 06/24/2004 | US20040118563 Technique for preventing deposition products from impeding the motion of a movable component |
| 06/23/2004 | CN2621217Y Tubing paraffin removal apparatus |
| 06/17/2004 | WO2004051055A2 Welbore cleanout tool and method |
| 06/17/2004 | US20040112607 Devices and methods for extraction, transportation and/or release of material |
| 06/17/2004 | US20040112588 Well bore cleaning and tubular circulating and flow-back apparatus |
| 06/17/2004 | US20040112587 Expandable downhole tool |
| 06/15/2004 | US6749019 Automatic paraffin removal unit |
| 06/10/2004 | WO2004048751A1 Methods and apparatus for swabbing a well |
| 06/10/2004 | US20040110645 Method for controlled placement of oilfield chemicals and composition useful for practicing same |
| 06/10/2004 | CA2547529A1 Methods and apparatus for swabbing a well |
| 06/09/2004 | CN1153001C Method for cleaning wall without backflow |
| 06/08/2004 | US6745839 Borehole cleaning apparatus and method |
| 06/08/2004 | US6745838 Chemical injection control system and method for multiple wells |
| 06/03/2004 | DE69816743T2 Fiberoptische sensoren und ansteuervorrichtungen in bohrloechern Fiberoptic Sensors and Control devices in boreholes |
| 05/27/2004 | WO2004044370A2 Devices and methods for extraction, transportation and/or release of material |
| 05/27/2004 | US20040099418 Reservoir communication by creating a local underbalance and using treatment fluid |
| 05/27/2004 | US20040099417 Methods and apparatus for production of hydrocarbons |
| 05/27/2004 | US20040099413 Wellbore cleanout tool and method |
| 05/20/2004 | US20040094302 Apparatus and method for debris in a well bore |
| 05/18/2004 | CA2221514C Method of preventing scrapers on a reciprocating sucker rod from wearing grooves in well tubing, and a scraper |
| 05/13/2004 | US20040089449 Controlling a pressure transient in a well |
| 05/13/2004 | US20040089446 Swabbing tool for wells |
| 05/11/2004 | US6733668 Apparatus for magnetically treating flowing fluids |
| 05/11/2004 | US6732798 Controlling transient underbalance in a wellbore |