| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 05/11/2004 | US6732793 Downhole jetting tool |
| 05/08/2004 | CA2411618A1 Swabbing tool for wells |
| 05/06/2004 | WO2004038178A1 Apparatus and method for cleaning and sealing a well borehole portion for formation evaluation |
| 05/06/2004 | WO2004009954A9 Method for completing injection wells |
| 05/06/2004 | US20040087448 Packer fluid |
| 05/06/2004 | US20040084187 Method and apparatus for cleaning a fractured interval between two packers |
| 05/06/2004 | US20040084186 Well treatment apparatus and method |
| 05/06/2004 | EP1416118A1 Well treatment apparatus and method |
| 04/30/2004 | CA2444549A1 Well treatment apparatus and method |
| 04/29/2004 | US20040079527 Method for cleaning and sealing a well borehole portion for formation evaluation |
| 04/29/2004 | US20040079524 Toroidal choke inductor for wireless communication and control |
| 04/27/2004 | US6725923 Method and device for exciting transversal oscillations of a pipe string in a borehole |
| 04/22/2004 | WO2004033850A1 Methods and apparatus for a subsea tie back |
| 04/22/2004 | CA2501315A1 Methods and apparatus for a subsea tie back |
| 04/20/2004 | US6722442 Subsurface apparatus |
| 04/20/2004 | US6722438 Method and apparatus for formation damage removal |
| 04/15/2004 | DE20312126U1 System to clear water pipes and the like, of fouling and bio-films, has a hot steam generator to spray steam into the water pipe through a jet and/or generate sparks as an arc through electrodes at the pipe |
| 04/14/2004 | CN1145741C Technology for removing stratum blocking of oil well or water injection well |
| 04/14/2004 | CN1145684C Cleaning compositions for oil and gas well, lines, casings, formations and equipment and its methods of use |
| 04/13/2004 | US6719056 Sand removal method |
| 04/13/2004 | US6719050 Method and apparatus for removing solid material from a well using a rotary pump |
| 04/08/2004 | US20040065439 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/07/2004 | CN1487048A Solid wax-resisting scale inhibitor for well |
| 04/06/2004 | US6715550 Controllable gas-lift well and valve |
| 04/01/2004 | US20040063795 Water and an acid blend of mineral acid and organic acid, a blend of a nonionic surfactant and an anionic surfactant, and solvent; use well cleaning; cleaning oil sludges and drilling mud residues |
| 04/01/2004 | US20040060738 Method for determining sweep efficiency for removing cuttings from a borehole |
| 04/01/2004 | US20040060703 Controlled downhole chemical injection |
| 04/01/2004 | US20040060698 Method for cleaning gravel packs |
| 03/31/2004 | EP1403463A1 Paraffin inhibitor compositions and their use in oil and gas production |
| 03/31/2004 | EP1402154A2 Hydrate reducing and lubrication system and method for a fluid flow system |
| 03/25/2004 | WO2004025067A2 Reducing paraffin, asphaltene, and hydrate accumulations in wells |
| 03/25/2004 | WO2004024309A2 System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 03/25/2004 | US20040055942 Apparatus for magnetically treating flowing fluids |
| 03/24/2004 | CN2607441Y Mechanical crawling paraffin scraper |
| 03/24/2004 | CN2607440Y Conventional well-flushing sliding sleeve for oil pipe paraffin removal of pump oil well |
| 03/24/2004 | CN2607437Y Internal supporting strip type sucker rod paraffin-scraping centralising device |
| 03/20/2004 | CA2404315A1 Well servicing apparatus and method |
| 03/18/2004 | US20040050553 Tool method and system for flushing a vertical riser |
| 03/17/2004 | CN2606792Y Double tank unpowered continuous chemical adding device |
| 03/16/2004 | US6705396 Method and apparatus for producing fluid cavitation |
| 03/11/2004 | WO2004020775A2 Method and apparatus for removing cuttings |
| 03/11/2004 | US20040045474 Bi-directional traction apparatus |
| 03/11/2004 | DE10237674A1 System to clear water pipes and the like, of fouling and bio-films, has a hot steam generator to spray steam into the water pipe through a jet and/or generate sparks as an arc through electrodes at the pipe |
| 03/10/2004 | CN2606177Y Sucker rod cleaner |
| 03/09/2004 | US6702022 Consuming deposits using heat generated from reaction of alkali or alkaline earth metal and water; forming gel barrier with further reaction of active material with aluminum or scandium |
| 03/04/2004 | WO2004018834A1 Method for controlled placement of oilfield chemicals and composition useful for practicing same |
| 03/04/2004 | WO2004018118A2 Methods and associated devices for removing incrustations and biofilms in fluid systems |
| 03/04/2004 | US20040043501 Monitoring reservoir conditions, estimating and quantifying concentrations of oil and gas in earth formations and determining operating and physical conditions of down hole tools |
| 03/04/2004 | US20040040749 Method and apparatus for removing cuttings |
| 02/26/2004 | WO2004016904A1 Subsea chemical injection unit for additive injection and monitoring system for oilfield operations |
| 02/26/2004 | CA2502654A1 Subsea chemical injection unit for additive injection and monitoring system for oilfield operations |
| 02/25/2004 | EP1180194B1 Subsurface apparatus |
| 02/25/2004 | CN2604521Y Automatic controlling drip chemials filling device for oil well use |
| 02/24/2004 | US6695058 Method and apparatus for cleaning boreholes |
| 02/24/2004 | CA2268104C Method of obtaining improved geophysical information about earth formations |
| 02/19/2004 | US20040031613 Method of cleaning and refinishing tubulars |
| 02/18/2004 | EP1389261A1 Well cleaning apparatus |
| 02/12/2004 | WO2004013446A2 Self-excited drill bit sub |
| 01/29/2004 | WO2004009954A1 Method for completing injection wells |
| 01/29/2004 | US20040016540 Device for cleaning an inner pipe inserted into a gas or oil producing well |
| 01/28/2004 | CN2601300Y 刮刀式清蜡工具 Wax scraper tool |
| 01/28/2004 | CN2601299Y Multifunctional well operation tool |
| 01/28/2004 | CN1136378C Fluid-dynamic sound-wave wax preventor |
| 01/22/2004 | US20040014606 Method For Completing Injection Wells |
| 01/22/2004 | US20040011528 Combined milling and scraping tool |
| 01/21/2004 | EP1102916B1 Apparatus and method for perforating and stimulating a subterranean formation |
| 01/21/2004 | CN2600583Y Pumping well creeping cleaning appratus |
| 01/21/2004 | CN2600582Y Pumping well self paraffin removal unit |
| 01/21/2004 | CN2600580Y Temp. control flushing packer |
| 01/15/2004 | WO2004005668A1 Downhole drill string having a collapsible subassembly |
| 01/15/2004 | US20040007355 Convertible tubular scraper |
| 01/15/2004 | CA2492746A1 Downhole drill string having a collapsible subassembly |
| 01/13/2004 | US6675914 Pressure reading tool |
| 01/08/2004 | US20040003924 Apparatus and method for cleaning a gas well |
| 01/02/2004 | EP1373676A1 An apparatus for retrieving metal debris from a well bore |
| 12/31/2003 | CN2596004Y Vehicle carried equipment for well-washing and de-waxing |
| 12/31/2003 | CN2596003Y Vehicle carried de-waxing equipment |
| 12/31/2003 | CN1464174A Screw bolt well pumping and washing process and apparatus |
| 12/30/2003 | US6668931 Apparatus and method for cleaning a gas well |
| 12/24/2003 | CN2594456Y Hot cleaning device for non-pressurized pay |
| 12/18/2003 | US20030230893 Spoolable composite coiled tubing connector |
| 12/17/2003 | CN2592858Y Thermla washing and paraffin removing apparatus for oil well and oil transport mainline |
| 12/16/2003 | US6662884 Method for determining sweep efficiency for removing cuttings from a borehole |
| 12/11/2003 | US20030226664 Sand removal and device retrieval tool |
| 11/27/2003 | WO2003098104A2 Stimulation and injection system |
| 11/27/2003 | CA2485991A1 Stimulation and injection system |
| 11/26/2003 | CN2588049Y Clamping-proof sleeve scraper for oil field |
| 11/26/2003 | CN1458387A Method for adding chemicals using ground water mixing pipeline |
| 11/26/2003 | CN1458386A Deepening liquid injection system for pipeline of liquid production well |
| 11/25/2003 | US6651744 Bi-directional thruster pig apparatus and method of utilizing same |
| 11/20/2003 | WO2003095792A1 A method and a device for removing a hydrate plug |
| 11/19/2003 | EP1362160A1 Composition and method for inhibition of formation of gas hydrates |
| 11/19/2003 | CN1456634A Water based dewaxing agent for oil collecting and displacing wells |
| 11/18/2003 | US6648072 Method and apparatus for delivery of treatment chemicals to subterranean wells |
| 11/13/2003 | WO2003093635A1 Selectively operational cleaning tool |
| 11/12/2003 | EP0925423B1 Apparatus and method for perforating and stimulating a subterranean formation |
| 11/06/2003 | US20030205083 Monitoring of downhole parameters and tools utilizing fiber optics |
| 11/05/2003 | EP1358426A2 Method of diminishing the size of the cross section of an opening of a hollow device located in a flow pipe |
| 11/05/2003 | CN2584819Y Multifunction fracture sand mixing truck |
| 11/04/2003 | US6640904 Sand removal and device retrieval tool |