| 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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| 12/25/2003 | US20030234538 Multi-point high pressure seal for expandable tubular connections |
| 12/25/2003 | US20030234111 Internal support apparatus for downhole tubular structures and method of use |
| 12/25/2003 | US20030234108 Check enhancer for injecting fluids into a well |
| 12/25/2003 | US20030234107 Check enhancer |
| 12/25/2003 | US20030234106 Downhole tool and method for fracturing a subterranean well formation |
| 12/25/2003 | US20030234102 Methods of sealing expandable pipe in well bores and sealing compositions |
| 12/24/2003 | WO2003106932A1 Pumping system for oil wells |
| 12/24/2003 | WO2003106812A1 Oil-field development |
| 12/24/2003 | WO2003106811A1 Expandable centralizer for downhole tubulars |
| 12/24/2003 | WO2003106806A1 A device and a method for drilling and completing a horizontal wellbore |
| 12/24/2003 | WO2003106130A2 Collapsible expansion cone |
| 12/24/2003 | WO2003015025A3 Apparatus, method and system for single well solution-mining |
| 12/24/2003 | WO2003004820A3 Liner hanger |
| 12/24/2003 | CN2594544Y Reducer casing of transmission shifting electric motor of oil sucker |
| 12/24/2003 | CN2594500Y Oil-submersible speed reducer |
| 12/24/2003 | CN2594493Y Energy-saving load reduced deep-well oil sucking pump |
| 12/24/2003 | CN2594461Y Concentric bridge integrated water make-up device |
| 12/24/2003 | CN2594460Y Balancing weighter of sucker |
| 12/24/2003 | CN2594459Y V shaped interactive self balanced electromechanical unitary intellectual oil sucker for multiple drilling |
| 12/24/2003 | CN2594453Y Water distributing packer |
| 12/24/2003 | CN1462975A Data management information system for water injection well |
| 12/24/2003 | CA2489283A1 Collapsible expansion cone |
| 12/24/2003 | CA2487863A1 Pumping system for oil wells |
| 12/23/2003 | US6666664 Technique for protecting a submersible motor |
| 12/23/2003 | US6666276 Downhole radial set packer element |
| 12/23/2003 | US6666270 Reciprocating pump vent-dump valve and methods of use |
| 12/23/2003 | US6666269 Method and apparatus for producing fluid from a well and for limiting accumulation of sediments in the well |
| 12/23/2003 | CA2217637C Control of particulate flowback in subterranean wells |
| 12/23/2003 | CA2217636C Control of particulate flowback in subterranean wells |
| 12/23/2003 | CA2217380C Methods of decomposing gas hydrates |
| 12/18/2003 | WO2003104704A1 Connector for expandable downhole tubulars |
| 12/18/2003 | WO2003104611A1 Method for construction and completion of injection wells |
| 12/18/2003 | WO2003104601A2 Mono-diameter wellbore casing |
| 12/18/2003 | WO2003064811A3 Sand control screen assembly and treatment method using the same |
| 12/18/2003 | WO2002092186A3 Hydrate reducing and lubrication system and method for a fluid flow system |
| 12/18/2003 | US20030231017 Formation-based interpretation of NMR data for carbonate reservoirs |
| 12/18/2003 | US20030230535 Downhole desalination of aquifer water |
| 12/18/2003 | US20030230411 Expandable centralizer for downhole tubulars |
| 12/18/2003 | US20030230410 Method and apparatus for installing tubing in a wellbore |
| 12/18/2003 | US20030230408 Method of completing a well in an unconsolidated formation |
| 12/18/2003 | US20030230406 Single placement well completion system |
| 12/18/2003 | US20030230405 System for running tubular members |
| 12/18/2003 | CA2489058A1 Mono-diameter wellbore casing |
| 12/17/2003 | CN2592867Y In-situ producing injection apparatus of microbial displacement |
| 12/17/2003 | CN2592866Y Single-layer measuring injection well down-hole flow for water injection well |
| 12/17/2003 | CN2592865Y Anticorrosive, antiscaling and antirust injection well down-hole flow seating nipple |
| 12/17/2003 | CN2592864Y Superhigh dense-hole widowmaker bullet frame for oil-gas well |
| 12/17/2003 | CN2592863Y Camber beam variable-torque composite balance beam pump |
| 12/17/2003 | CN2592851Y Thichened oil thermal recovery well head apparatus |
| 12/16/2003 | US6662883 Charge tube assembly for a perforating gun |
| 12/16/2003 | US6662876 Method and apparatus for downhole tubular expansion |
| 12/16/2003 | US6662875 Induction choke for power distribution in piping structure |
| 12/16/2003 | US6662874 System and method for fracturing a subterranean well formation for improving hydrocarbon production |
| 12/16/2003 | US6662873 Methods and compositions for forming permeable cement sand screens in wells |
| 12/16/2003 | US6662872 Injecting steam into reservoir and recovering fraction of the hydrocarbons and forming heated chamber in reservoir; continuing to inject steam into the reservoir and mobilizing and recovering hydrocarbons; injecting a solvent |
| 12/16/2003 | US6662870 Method and system for accessing subterranean deposits from a limited surface area |
| 12/16/2003 | US6662869 Ceramic components for high pressure oil wells |
| 12/16/2003 | CA2305962C A closed oil liquid ring gas compression system with a suction injection port |
| 12/12/2003 | CA2390470A1 Method and apparatus for gas lift system for oil and gas wells |
| 12/11/2003 | WO2003102368A1 Method and system for producing fluids in wells using simultaneous downhole separation and chemical injection |
| 12/11/2003 | WO2003102367A1 Method and apparatus to reduce downhole surge pressure using hydrostatic valve |
| 12/11/2003 | WO2003102366A1 Monobore shoe |
| 12/11/2003 | WO2003102365A1 System for radially expanding a tubular member |
| 12/11/2003 | WO2003102363A1 Apparatus and method for gravel packing an interval of a wellbore |
| 12/11/2003 | WO2003102362A1 Modeling simulation and comparison of models for wormhole formation during matrix stimulation of carbonates |
| 12/11/2003 | WO2003102351A2 Oil and gas production with downhole separation and reinjection of gas |
| 12/11/2003 | WO2003102348A2 Multi seam coal bed/methane dewatering and depressurizing production system |
| 12/11/2003 | WO2003102346A2 Downhole desalination of aquifer water |
| 12/11/2003 | WO2003102086A2 Particulate material having multiple curable coatings and methods for making and using same |
| 12/11/2003 | WO2003036028A3 Multi-shot tubing perforator |
| 12/11/2003 | US20030227393 Wireless power and communications cross-bar switch |
| 12/11/2003 | US20030227170 Pre-expanded connector for expandable downhole tubulars |
| 12/11/2003 | US20030226666 Tubing annulus valve |
| 12/11/2003 | US20030226665 Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones |
| 12/11/2003 | US20030226664 Sand removal and device retrieval tool |
| 12/11/2003 | US20030226661 System for exploiting oilfields |
| 12/11/2003 | CA2487286A1 System for radially expanding a tubular member |
| 12/11/2003 | CA2486775A1 Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates |
| 12/10/2003 | EP1368554A1 Expander for expanding a tubular element |
| 12/10/2003 | EP1368188A1 Composite proppant, filtration media, gravel packing media, and sports field media, and methods for making and using same |
| 12/10/2003 | EP1220972B1 Underbalanced perforation |
| 12/10/2003 | CN2591337Y Swing-arm type long-stroke low-energy consumption pumping unit main body |
| 12/10/2003 | CN2591280Y Screw pump bolt supports torque releasing apparatus |
| 12/10/2003 | CN2591274Y Plunger piston protective sleeve |
| 12/10/2003 | CN2591272Y Condensed oil pump with weighing rod under pump |
| 12/10/2003 | CN2591271Y Oil pipe pump |
| 12/10/2003 | CN2591227Y Borehole self-locking device |
| 12/10/2003 | CN2591226Y Gas fuel steam generator |
| 12/10/2003 | CN2591225Y Ring rotary straight-line beam-=pumping unit |
| 12/10/2003 | CN2591224Y Rotatable oil pipe and sucker rod pumping unit |
| 12/10/2003 | CN1460769A Heat, electricity and gas combined supply method for oil field production |
| 12/09/2003 | US6660693 Methods for dewatering shaly subterranean formations |
| 12/09/2003 | US6659179 Method of controlling proppant flowback in a well |
| 12/09/2003 | US6659174 System and method of tracking use time for electric motors and other components used in a subterranean environment |
| 12/09/2003 | US6658981 Thru-tubing stackable perforating gun system and method for use |
| 12/09/2003 | CA2254722C Apparatus and method for removing fluids from underground wells |
| 12/04/2003 | WO2003100215A2 Mitigation of proppant sticking in removing downhole tools |
| 12/04/2003 | WO2003100214A1 Use of surface-modified nanoparticles for oil recovery |
| 12/04/2003 | WO2003100212A1 System and method for flow/pressure boosting in subsea |
| 12/04/2003 | WO2003100211A1 Expandable screen for a horizontal or high-angle well and method for installing the same |