| 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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| 07/30/2003 | EP0910725B1 Wellbores utilizing fiber optic-based sensors and operating devices |
| 07/30/2003 | CN2563836Y Adjustable discharging voltage electric pulse deblocking device |
| 07/30/2003 | CN2563361Y Speed reducer for oil pumping unit |
| 07/30/2003 | CN2563355Y Embedded energy saving clutch regulator |
| 07/30/2003 | CN2563331Y Gas-proof lock oil pump unit |
| 07/30/2003 | CN2563330Y Steam driving initial sand prevention well large discharge oil pump unit |
| 07/30/2003 | CN2563307Y Movable rotary underwell oil/water separator |
| 07/30/2003 | CN2563306Y Hydraulic vortex sand separator |
| 07/30/2003 | CN2563305Y Mixed injection spray pump for flue gas and steam |
| 07/30/2003 | CN2563304Y Crew pump separate injection device |
| 07/30/2003 | CN2563303Y Adjustable oil production arm for vertical oil pumping unit |
| 07/30/2003 | CN2563302Y Machine frame of oil production unit |
| 07/30/2003 | CN2563297Y Water distribution packer |
| 07/30/2003 | CN2563295Y Slip water distribution packer |
| 07/30/2003 | CN1433499A Method of improving permeability of underground petroleum-containing formation |
| 07/30/2003 | CN1432717A Hydraulic cylinder type double-well oil pumping unit |
| 07/30/2003 | CN1116497C Acid for erosion of sandstone |
| 07/30/2003 | CN1116496C Oil recovery technique combining chemical handing with water blocking in oil well |
| 07/30/2003 | CN1116495C Apparatus for perforating and stimulating subterranean formation |
| 07/29/2003 | US6598686 Method and system for enhanced access to a subterranean zone |
| 07/29/2003 | US6598682 Reservoir communication with a wellbore |
| 07/29/2003 | US6598681 Dual gearbox electric submersible pump assembly |
| 07/29/2003 | US6598678 Apparatus and methods for separating and joining tubulars in a wellbore |
| 07/29/2003 | US6598677 Hanging liners by pipe expansion |
| 07/29/2003 | US6598675 Downhole well-control valve reservoir monitoring and drawdown optimization system |
| 07/29/2003 | CA2255536C Method and apparatus for treating long formation intervals |
| 07/24/2003 | WO2003060370A1 Method for making a sealed tubular joint with plastic expansion |
| 07/24/2003 | WO2003060369A1 Threaded tubular joint comprising sealing surfaces |
| 07/24/2003 | WO2003060289A1 Bore isolation |
| 07/24/2003 | WO2003060198A1 A tubular member having an anti-galling coating |
| 07/24/2003 | WO2003059549A1 Protective sleeve for threaded connections for expandable liner hanger |
| 07/24/2003 | WO2003048521A3 Method for joining tubulars by expansion |
| 07/24/2003 | US20030137181 In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range |
| 07/24/2003 | US20030136585 Device and method for extracting a gas hydrate |
| 07/24/2003 | US20030136562 Apparatus and method for perforating a subterranean formation |
| 07/24/2003 | US20030136561 Straddle |
| 07/24/2003 | US20030136559 In situ thermal processing while controlling pressure in an oil shale formation |
| 07/24/2003 | US20030136558 In situ thermal processing of an oil shale formation to produce a desired product |
| 07/24/2003 | US20030136557 Fluid well pumping system |
| 07/24/2003 | US20030136185 Multiphase flow measurement system |
| 07/23/2003 | EP1328706A1 Gas displaced chamber lift system having gas lift assist |
| 07/23/2003 | EP1328705A1 Downhole expandable tubing |
| 07/23/2003 | EP1328704A1 Gas displaced chamber lift system with closed loop/multi-stage vents |
| 07/23/2003 | EP1257725A4 Coupled electromagnetic and acoustic stimulation of crude oil reservoirs |
| 07/23/2003 | EP1112437B1 Method for the in-situ extraction of gas from coal seams |
| 07/23/2003 | CN2562211Y Autoamtic regulator of muller |
| 07/23/2003 | CN2562166Y Pre-alarm device for wear-out of crank pin |
| 07/23/2003 | CN2561959Y Permanent magnetic submersible motor |
| 07/23/2003 | CN2561958Y High effective fixed valve of oil sucking pump |
| 07/23/2003 | CN2561929Y Continuous test sealer |
| 07/23/2003 | CN2561926Y Walking beam style hydraulic oil sucker |
| 07/23/2003 | CN1432097A In situ recovery from hydrocarbon contg. formation |
| 07/23/2003 | CN1432096A Method and system for reducing longitudinal fluid flow around permeable well tublar |
| 07/23/2003 | CN1431383A Injecting technique and equipments in production site for expelling oil by microbe |
| 07/23/2003 | CN1431382A Electric and gas dual controlled safety cut-off device on high pressure oil and gas well top |
| 07/23/2003 | CN1115467C Polymer deposition well flow controller |
| 07/23/2003 | CN1115190C Rhamnolipid biological surfactant its prepn. process and use in tertiary oil recovery |
| 07/22/2003 | US6595296 Hydraulic control assembly |
| 07/22/2003 | US6595295 Electric submersible pump assembly |
| 07/22/2003 | US6595294 Method and device for gas lifted wells |
| 07/22/2003 | US6595291 Flue gas comprising N2, CO2, NOx, VOC, and 0-2.0 mole % O2; exhaust gas from combustion of air and natural gas is combusted with natural gas; injection into oil well |
| 07/22/2003 | US6595290 Internally oriented perforating apparatus |
| 07/22/2003 | US6595289 Method and apparatus for plugging a wellbore |
| 07/22/2003 | US6595287 Auto adjusting well control system and method |
| 07/22/2003 | US6595280 Submersible well pumping system with an improved hydraulically actuated switching mechanism |
| 07/22/2003 | CA2416985A1 System for fracturing wells using supplemental longer-burning propellants |
| 07/22/2003 | CA2247445C Method and well tool for gravel packing a well using low-viscosity fluids |
| 07/17/2003 | WO2003058028A1 Radiating complex for oil and gas wells |
| 07/17/2003 | WO2003058027A1 Modular liner hanger |
| 07/17/2003 | WO2003058022A2 Seal receptacle using expandable liner hanger |
| 07/17/2003 | WO2003048522A3 Severe dog leg swivel for tubing conveyed perforating |
| 07/17/2003 | WO2003036040A3 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| 07/17/2003 | WO2003033867A3 A system and method for injecting gas into a hydrocarbon reservoir |
| 07/17/2003 | US20030132032 Method and apparatus for drilling and lining a wellbore |
| 07/17/2003 | US20030132003 Sealed ESP motor system |
| 07/17/2003 | US20030132001 Flow control device |
| 07/17/2003 | US20030131999 Coating dry proppant particles with a hardenable resin; suspension in fracturing fluid; and consolidating in fractures into high strength permeable masses |
| 07/17/2003 | US20030131998 Methods of consolidating proppant in subterranean fractures |
| 07/17/2003 | US20030131997 Expandable sand control device and specialized completion system and method |
| 07/17/2003 | US20030131996 In situ thermal processing of an oil shale formation having permeable and impermeable sections |
| 07/17/2003 | US20030131995 In situ thermal processing of a relatively impermeable formation to increase permeability of the formation |
| 07/17/2003 | US20030131994 Heat from the heat sources and the vaporized recovery fluid pyrolyzes at least some hydrocarbons within the selected section; produced gas mixture may include hydrocarbons with an average API gravity greater than 25 degrees |
| 07/17/2003 | US20030131993 Heat from the heat sources and the vaporized recovery fluid pyrolyzes at least some hydrocarbons within the selected section; produced gas mixture may include hydrocarbons with an average API gravity greater than 25 degrees |
| 07/17/2003 | US20030131990 Wellbores utilizing fiber optic-based sensors and operating devices |
| 07/17/2003 | US20030131989 Forming a pressure barrier enclosure of production strata |
| 07/17/2003 | US20030131726 Selectively separates at least one acid gas component from the multi-component gas stream as a permeate stream having a pressure of at least 20% of the pressure of the feed pressure. |
| 07/17/2003 | DE3839064C1 Hohlladungs-Projektil Shaped-charge projectile |
| 07/17/2003 | CA2471875A1 Seal receptacle using expandable liner hanger |
| 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 | EP1327052A1 Drain element comprising a liner consisting of hollow rods for collecting in particular hydrocarbons |
| 07/16/2003 | EP1327050A1 Cement shoe assembly for monobore well |
| 07/16/2003 | EP1082518B1 Method and system for separating and injecting gas in a wellbore |
| 07/16/2003 | CN2560785Y Anti-theaft bolt assembly of reduction box for pumping unit |
| 07/16/2003 | CN2560771Y Snubbing blowout-preventing pump for environmental protection |
| 07/16/2003 | CN2560755Y High-energy gas ring-groove fracturing bullet of oil-gas well capable of regulating pressure and action time |
| 07/16/2003 | CN2560754Y Double measuring injection well down-hole flow |
| 07/16/2003 | CN2560753Y Single-arm belt-wheel-free pumping unit |
| 07/16/2003 | CN2560752Y Parallel beam-cluster multi-well interacting self-balanced pupming unit |
| 07/16/2003 | CN2560751Y Hydraulic beam-cluster multi-well interacting self-balanced pumping unit |
| 07/16/2003 | CN1430699A Method for treating hydrocarbon-containing formation |