Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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)
07/2003
07/16/2003CN1430698A Method for treating hydrocarbon-containing formation
07/16/2003CN1430697A Method for treating hydrocarbon-containing formation
07/16/2003CN1430696A Heating system and method
07/16/2003CN1430695A Electrical well heating system and method
07/16/2003CN1429967A Method of passing fracture of underground gasification furnace
07/16/2003CN1429966A Method of optimized ternary built composite reservoir oil displacement scheme
07/16/2003CN1429965A Ternary built reservoir oil displacement method
07/16/2003CN1114751C Method and apparatus for acquiring data in oil well
07/16/2003CN1114750C Method for eliminating pressure difference of pump tube in water injection system
07/16/2003CA2367772A1 Shaped charge liner and process
07/15/2003US6592660 Methods and compositions for forming permeable cement sand screens in well bores
07/15/2003US6592299 Method and an installation for collecting from and detecting a fresh water spring at sea
07/15/2003US6591912 Full bore automatic gun release module
07/15/2003US6591911 Multi-directional gun carrier method and apparatus
07/15/2003US6591908 Injecting heated fluid; solvents include C1 to C30 hydrocarbons, carbon dioxide, carbon monoxide; surprisingly the percentage of oil recovered increased and the volume of injected fluid per volume of oil produced decreased as the
07/15/2003US6591907 Pyrolysis
07/15/2003US6591906 In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content
07/15/2003US6591903 Method of recovery of hydrocarbons from low pressure formations
07/15/2003US6591869 Multiport gate valve assembly
07/15/2003US6591737 Pad plunger assembly with interfitting keys and key ways on mandrel and pads
07/15/2003US6591700 Apparatus for passive removal of subsurface contaminants and mass flow measurement
07/11/2003CA2416180A1 Modular propellant assembly for fracturing wells
07/10/2003WO2003056131A1 Method and apparatus for placement of multiple fractures in open hole wells
07/10/2003WO2003056129A1 Shot direction indication device
07/10/2003WO2003056128A1 Apparatus for translating a rotary expander tool downhole
07/10/2003WO2003056125A2 Bore liner
07/10/2003WO2003055616A2 Tubing expansion
07/10/2003WO2003036032A3 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids
07/10/2003US20030130136 In situ thermal processing of a relatively impermeable formation using an open wellbore
07/10/2003US20030127774 Tubing expansion
07/10/2003US20030127400 Water treatment process for thermal heavy oil recovery
07/10/2003US20030127232 Optical position sensing for well control tools
07/10/2003US20030127230 Method for formation pressure control while drilling
07/10/2003US20030127228 Well treatment tool and method of treating a well
07/10/2003US20030127227 Method and apparatus for wellbore fluid treatment
07/10/2003US20030127226 Water treatment method for heavy oil production
07/10/2003US20030127225 Bore liner
07/10/2003US20030127223 Technique for sensing flow related parameters when using an electric submersible pumping system to produce a desired fluid
07/10/2003US20030127222 Modular liner hanger
07/10/2003US20030127220 Wellhead stuffing box support assembly
07/09/2003EP1326003A1 Resin-coated proppant for subterranean fractures
07/09/2003EP1325211A1 Expandable lockout for a subsurface safety valve
07/09/2003EP1325210A2 Apparatus and method for controlling a fluid flow in a wellbore
07/09/2003EP1325209A1 Method and apparatus for cementing wells
07/09/2003EP1325207A2 Gas operated pump for use in a wellbore
07/09/2003EP1324855A1 A method for interconnecting adjacent expandable pipes
07/09/2003CN2559975Y Screw pump well torque testing device
07/09/2003CN2559835Y Energy-saving speed reducer for beam-pumping uint
07/09/2003CN2559810Y 软柱塞泵 Soft piston
07/09/2003CN2559790Y Horizontal-upward flow energy-saving oil-gas water sand separator
07/09/2003CN2559789Y Constant flow eccentric water distribution plug
07/09/2003CN2559788Y Constant flow eccentric water distribution plug
07/09/2003CN2559787Y V-type electric control pumping unit
07/09/2003CN2559786Y Upper sealing screw pump well driving device
07/09/2003CN2559784Y Hot water circulation incidental heat type well head controller
07/09/2003CN2559783Y Viscous oil thermal recovery well head apparatus
07/09/2003CN1429309A Method for treating hydrocarbon-containing formation
07/09/2003CN1428498A Automatic screen-cleaning bottomhole sand-preventing machine driven by reservoir pressure
07/09/2003CN1428394A Three-component combination flooding formula optimization and method for reducing use level of chemical agent
07/08/2003US6588508 Method and apparatus to reduce trapped pressure in a downhole tool
07/08/2003US6588507 Apparatus and method for progressively gravel packing an interval of a wellbore
07/08/2003US6588506 Method and apparatus for gravel packing a well
07/08/2003US6588504 Conversion of hydrocarbons to produce hydrocarbons, hydrogen, and/or novel product streams from underground coal formations; pyrolysis
07/08/2003US6588503 In Situ thermal processing of a coal formation to control product composition
07/08/2003US6588501 Method and apparatus to reduce hydrostatic pressure in sub sea risers using buoyant spheres
07/08/2003US6588266 Monitoring of downhole parameters and tools utilizing fiber optics
07/08/2003CA2255071C Oilfield in-situ upgrading process
07/03/2003WO2003054351A1 Wet electric heating process
07/03/2003WO2003054350A1 Use of charged amphiphilic statistic polymers for thickening phases comprising giant micelles of surfactants and aqueous compositions comprising same
07/03/2003WO2003054340A2 Installation of evacuated tubular conduits
07/03/2003WO2003054339A2 Casing while drilling
07/03/2003WO2003054112A2 Oil and gas production with downhole separation and reinjection of gas
07/03/2003WO2003036035A3 In situ upgrading of coal
07/03/2003WO2003036031A3 Seismic monitoring of in situ conversion in a hydrocarbon containing formation
07/03/2003WO2003035811A9 Remediation of a hydrocarbon containing formation
07/03/2003US20030121669 Apparatus for releasably coupling two elements
07/03/2003US20030121663 Method and apparatus for placement of multiple fractures in open hole wells
07/03/2003US20030121659 Resilient Cement
07/03/2003US20030121656 Liquid level detection for artificial lift system control
07/03/2003US20030121655 Threaded apparatus for selectively translating rotary expander tool downhole
07/03/2003US20030121558 Tube anchored to structure; pulling expansion structure through tube; well bore casing; controlling fluid flow
07/03/2003US20030121442 Method and apparatus for locking charges into a charge holder
07/02/2003EP1322836A1 Method and device to stabilise the production of oil wells
07/02/2003EP1322835A2 Well screen with spirally wrapped wire
07/02/2003EP1322834A1 Modular seabed processing system
07/02/2003EP1197663A4 Method for compressing a hydrocarbon-containing gaseous medium
07/02/2003EP1169547B1 Method of creating a wellbore in an underground formation
07/02/2003EP0883732B1 Downhole flow stimulation in a natural gas well
07/02/2003CN2558794Y Single-screw pump
07/02/2003CN2558788Y Viscous oil pump
07/02/2003CN2558787Y Low wearing resistance plunger pump
07/02/2003CN2558767Y Pumping and power switching controlling device between pumping units
07/02/2003CN2558766Y Electromagnetic heating compound oil collecting means
07/02/2003CN2558765Y Oil collecting tool with overload protection function
07/02/2003CN2558764Y Long-stroke NC pumping unit
07/02/2003CN1427918A Thin-wall expandable well screen assembly and associated fabrication methods
07/02/2003CN1427136A Installation method of oil well solid antiwax agent and its anti wax pipe
07/02/2003CN1427135A Water injection well under well continuous metering layered water injection method and device
07/01/2003US6587037 Method for multi-phase data communications and control over an ESP power cable
07/01/2003US6586900 Method for boosting the output voltage of a variable frequency drive
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