| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 02/06/2003 | US20030024736 Method of drilling a bore hole |
| 02/06/2003 | US20030024711 Tubing expansion |
| 02/06/2003 | US20030024708 Structral support |
| 02/06/2003 | US20030024704 Use of downhole high pressure gas in a gas-lift well |
| 02/06/2003 | US20030024700 Gas storage and production system |
| 02/06/2003 | US20030024699 In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio |
| 02/05/2003 | EP1280975A1 Invert well service fluid and method |
| 02/05/2003 | CN2534390Y High-water-cut producing well oil pumping water flooding double-purpose pump |
| 02/05/2003 | CN2534369Y 油井多功能分离器 Well multifunction splitter |
| 02/05/2003 | CN2534368Y Sand control screen tube |
| 02/05/2003 | CN2534367Y Beam pump |
| 02/05/2003 | CN2534359Y Stratigraphic multi-grade hydraulic hypocenter apparatus |
| 02/05/2003 | CN1395043A Permanently-non-plugging oil well pump sand-filtering machine |
| 02/04/2003 | US6513599 Thru-tubing sand control method and apparatus |
| 02/04/2003 | US6513597 Method for installing a water well pump |
| 02/04/2003 | US6513592 Method for consolidation of sand formations using nanoparticles |
| 02/04/2003 | US6513590 System for running tubular members |
| 02/04/2003 | US6513588 Downhole apparatus |
| 02/04/2003 | US6513345 Nozzle for supersonic gas flow and an inertia separator |
| 02/04/2003 | CA2187578C Pump drive head |
| 02/04/2003 | CA2054780C Methode for stimulating effluent production in a pay zone |
| 01/30/2003 | WO2003008761A1 Method for producing heavy crude oil |
| 01/30/2003 | WO2003008760A1 Method of sealing an annulus |
| 01/30/2003 | WO2003008756A1 Wellbore system with annular seal member |
| 01/30/2003 | WO2003008755A2 Wear resistant tubular connection |
| 01/30/2003 | WO2002055831A3 Improved method for stimulation of liquid flow in a well |
| 01/30/2003 | US20030021922 Rapid fixing; higher recording density; reduced spreading; increased image wear resistance |
| 01/30/2003 | US20030020499 Method for commissioning and operating an electrically heated pipe-in-pipe subsea pipeline |
| 01/30/2003 | US20030019639 Completion apparatus and methods for use in wellbores |
| 01/30/2003 | US20030019638 Procedures and equipment for profiling and jointing of pipes |
| 01/30/2003 | US20030019637 Method for preparing casing for use in a wellbore |
| 01/30/2003 | US20030019634 Upper zone isolation tool for smart well completions |
| 01/30/2003 | US20030019633 Production system and method for producing fluids from a well |
| 01/30/2003 | US20030019628 Bottom hole assembly |
| 01/30/2003 | US20030019626 In situ thermal processing of a coal formation with a selected hydrogen content and/or selected H/C ratio |
| 01/30/2003 | CA2453659A1 Method of sealing an annulus |
| 01/29/2003 | EP1279795A1 Variable orifice gas lift valve for high flow rates with detachable power source and method of using |
| 01/29/2003 | EP1279794A1 Use of virtual sensors for controlling electrical submersible pumps |
| 01/29/2003 | EP1278940A1 Method and system for sea-based handling of hydrocarbons |
| 01/29/2003 | EP1278938A1 Method and system for gas-lifting well effluents |
| 01/29/2003 | EP1278936A1 Tubing hanger with annulus bore |
| 01/29/2003 | EP1278935A1 Tubing head seal assembly |
| 01/29/2003 | EP1278934A1 Tubing hanger system with gate valve |
| 01/29/2003 | EP1278933A1 Internal gate valve for flow completion systems |
| 01/29/2003 | EP1278932A1 Apparatus and methods for forming a lateral wellbore |
| 01/29/2003 | EP1092080B1 Method and tool for fracturing an underground formation |
| 01/29/2003 | CN2533264Y Remote wireless monitoring apparatus for oil field |
| 01/29/2003 | CN2533263Y Six-link variable pivot point beam pumping unit for straight hole and slant hole |
| 01/29/2003 | CN2533262Y Multifunctional friction pumping unit |
| 01/29/2003 | CN2533261Y Long-stroke low frequency energy-saving pumping unit |
| 01/29/2003 | CN1393632A Airlifting ball and airlifting pipe column structure for oil well and its design scheme |
| 01/28/2003 | US6511041 Planar-divergent valve insert |
| 01/28/2003 | US6510896 Apparatus and methods for utilizing expandable sand screen in wellbores |
| 01/28/2003 | US6510796 Shaped charge for large diameter perforations |
| 01/26/2003 | CA2392831A1 Vertical flood for improved crude oil recovery from oil pools |
| 01/23/2003 | WO2003006790A1 Expandable liner hanger with bypass |
| 01/23/2003 | WO2003006789A1 Expandable wellbore stabiliser |
| 01/23/2003 | WO2003006788A1 Method of expanding a tubular element in a wellbore |
| 01/23/2003 | WO2003006780A2 Device and method for injecting fluids into a wellbore |
| 01/23/2003 | WO2003006778A1 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 01/23/2003 | WO2002052124A3 Method and apparatus for repair operations downhole |
| 01/23/2003 | US20030017010 Trunnion mounted pivoting riser support for offshore mooring systems |
| 01/23/2003 | US20030015458 Method and apparatus for stimulating heavy oil production |
| 01/23/2003 | US20030015325 Fluid profile control in enhanced oil recovery |
| 01/23/2003 | US20030015324 Method for installing a water well pump |
| 01/23/2003 | US20030015323 Circulation control device |
| 01/23/2003 | US20030015320 Virtual sensors to provide expanded downhole instrumentation for electrical submersible pumps (ESPs) |
| 01/23/2003 | CA2453047A1 Expandable wellbore stabiliser |
| 01/22/2003 | EP1277915A1 Method of sealing an annular space |
| 01/22/2003 | EP1277914A2 Apparatus and method for gravel packing an interval of a wellbore |
| 01/22/2003 | EP1276967A2 A method for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276966A1 A method for treating a hydrocarbon-containing formation |
| 01/22/2003 | EP1276965A1 A method for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276964A1 A method for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276963A1 In situ recovery of hydrocarbons from a kerogen-containing formation |
| 01/22/2003 | EP1276962A1 Enhanced oil recovery by in situ gasification |
| 01/22/2003 | EP1276961A2 Method for treating a hydrocarbon-containing formation |
| 01/22/2003 | EP1276960A2 A method for sequestering a fluid within a hydrocarbon containing formation |
| 01/22/2003 | EP1276959A2 Method and system for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276958A1 Electrical well heating system and method |
| 01/22/2003 | EP1276957A1 Electrical well heating system and method |
| 01/22/2003 | EP1276955A1 Central circulation completion system |
| 01/22/2003 | CN2532238Y Hydraulic ground hole pipe lift |
| 01/22/2003 | CN2532237Y Single pump respectively pumping pipe column |
| 01/22/2003 | CN1392328A Compensation method for expanding with heat and contracting with cold of underground gasifying furnace perforated pipe |
| 01/22/2003 | CN1392327A Perforator detection method and device |
| 01/22/2003 | CN1392220A Cleaning oil and gas well, pipeline, sleeve, stratum and equipment composition and its using method |
| 01/22/2003 | CN1099522C Method for reusing waste steam of steam-injected boiler |
| 01/21/2003 | US6508308 Progressive production methods and system |
| 01/21/2003 | US6508307 Techniques for hydraulic fracturing combining oriented perforating and low viscosity fluids |
| 01/21/2003 | US6508304 Multi-stage liquid elevator |
| 01/18/2003 | CA2353249A1 Pipe centralizer and method of attachment |
| 01/16/2003 | WO2003004821A2 Soap stick launcher and method for launching soap sticks |
| 01/16/2003 | WO2003004820A2 Liner hanger |
| 01/16/2003 | WO2003004819A2 Liner hanger |
| 01/16/2003 | US20030014183 Data acquisition system |
| 01/16/2003 | US20030010504 Soap stick launcher and method for launching soap sticks |
| 01/16/2003 | US20030010503 Method for preventing critical annular pressure buildup |
| 01/16/2003 | US20030010501 Technique for facilitating the pumping of fluids by lowering fluid viscosity |
| 01/16/2003 | US20030010498 Device and method for injecting fluids into a wellbore |