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)
08/2005
08/11/2005US20050172472 Method for making a sealed tubular joint with plastic expansion
08/11/2005DE102004004316A1 Verfahren zum Herstellen von Tiefbohrungen in geologischen Strukturen A method for producing deep holes in geological structures
08/11/2005DE102004003486A1 Verfahren zur Gewinnung von Grubengas in nicht unmittelbar durch den Bergbau beeinflussten Gebirgsbereichen Process for the recovery of firedamp in not directly affected by mining mountain areas
08/11/2005CA2496649A1 Method and apparatus for isolating and testing zones during reverse circulation drilling
08/10/2005EP1561006A1 Method and system for removing fluid from a subterranean zone using an enlarged cavity
08/10/2005CN2716540Y Injection-production integrative oil well pump
08/10/2005CN2716504Y Traveling oil field well-flushing water recovery and treatment device
08/10/2005CN2716503Y 空心配水器 Hollow water distribution
08/10/2005CN2716502Y Injection collection and water distribution integrative prizing injection allocation installation
08/10/2005CN2716501Y Self-sealing packing tool
08/10/2005CN2716500Y Anti-theft and detection device for pumping unit transmission case lubricating oil
08/10/2005CN2716499Y Automatic adjustment constant water nozzle
08/10/2005CN2716489Y Freely telescopic ground gas injection pipe compensator
08/10/2005CN1651764A Jet suction type extraction assisting pump
08/10/2005CN1651716A Full automatic weighing type gas liquid diphase oil well metering device
08/10/2005CN1651715A Method of entering target geologic body and system
08/10/2005CN1651714A Coal mining underground vertical gasification furnace building and operating method
08/10/2005CN1651545A Method of raising oil deposil erude petroleum recovery ratio
08/10/2005CN1214177C Control method for determining stroke position of pumping unit
08/09/2005US6928399 Method and program for simulating a physical system using object-oriented programming
08/09/2005US6926504 Submersible electric pump
08/09/2005US6926096 Method for using a well perforating gun
08/09/2005US6926080 Operation method of an oil well pumping unit for well development and device for performing said operation method
08/09/2005US6925924 Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator
08/09/2005US6925807 Actuator control system for hydraulic devices
08/09/2005CA2333739C Method and system for separating and injecting gas in a wellbore
08/09/2005CA2275741C Polyphasic production system suited for deep sea applications
08/09/2005CA2161537C Acidising underground reservoirs
08/04/2005WO2005071226A1 Method for extracting a mine gas in areas which are not directly influenced by mining
08/04/2005WO2005071220A1 Methods and compositions for the diversion of aqueous injection fluids in injection operations
08/04/2005WO2005071219A2 Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation
08/04/2005WO2005071212A1 Expandable connection
08/04/2005WO2004063621A3 Distributed natural gas storage system(s) using oil & gas & other well(s)
08/04/2005US20050171751 Method system and program storage device for simulating a multilayer reservoir and partially active elements in a hydraulic fracturing simulator
08/04/2005US20050167156 Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement
08/04/2005US20050167120 Sealed multilateral junction system
08/04/2005US20050167119 Method and system for removing fluid from a subterranean zone using an enlarged cavity
08/04/2005US20050167118 Tubing annulus valve
08/04/2005US20050167117 Underwater installation apparatus
08/04/2005US20050167116 Apparatus for production in oil wells
08/04/2005US20050167115 Sealed multilateral junction system
08/04/2005US20050167114 Sealed multilateral junction system
08/04/2005US20050167113 Sealed multilateral junction system
08/04/2005US20050167112 Sealed multilateral junction system
08/04/2005US20050167111 Sealed multilateral junction system
08/04/2005US20050167110 Sealed multilaterial junction system
08/04/2005US20050167108 Openhole Perforating
08/04/2005US20050167107 Methods of cementing in subterranean formations using crack resistant cement compositions
08/04/2005US20050167103 Applications of waste gas injection into natural gas reservoirs
08/04/2005US20050167094 System and method for sensing load on a downhole tool
08/04/2005US20050166962 Pressure storage vessel with separation apparatus and method of using the same
08/04/2005US20050166961 Closed loop additive injection and monitoring system for oilfield operations
08/04/2005US20050166388 Method and apparatus for forming a mono-diameter wellbore casing
08/04/2005US20050166387 Method and apparatus for forming a mono-diameter wellbore casing
08/03/2005EP1559867A1 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids
08/03/2005EP1558914A2 In-situ detection and analysis of coal bed methane formations with optical instruments and methods and apparatus to facilitate methane production and analysis
08/03/2005EP1558834A1 Methods and apparatus for a subsea tie back
08/03/2005CN2714803Y Downhole gas separator
08/03/2005CN2714802Y Integrative sand prevention and vapor injection compensator
08/03/2005CN2714801Y High pressure water injection self-sealing tool
08/03/2005CN2714800Y Screw tubular sand filter tube
08/03/2005CN2714799Y Vacuum negative pressure production assembly
08/03/2005CN2714798Y Screw lead turret type oil recovering machine
08/03/2005CN2714796Y Backflow proof ballseat
08/03/2005CN1650090A System to reduce hydrostatic pressure in risers using buoyant spheres
08/03/2005CN1648465A System and method for offshore production with well control
08/03/2005CN1648407A Zonal water injection contanst flow packer
08/03/2005CN1648406A Ground injecting gas boosting oil production and liquid discharging gas producing device and method
08/03/2005CN1648405A Injecting air boosting oil production and liquid discharging gas producing device and method
08/03/2005CN1648404A Automatic boosting oil production and liquid discharge gas producing device and method for underwell gas
08/03/2005CN1213217C Boosting water injector for oil field
08/02/2005US6924254 Viscous well treating fluids and methods
08/02/2005US6923275 Multi seam coal bed/methane dewatering and depressurizing production system
08/02/2005US6923262 Alternate path auger screen
08/02/2005US6923261 Apparatus and method for expanding a tubular
08/02/2005US6923260 Mitigation of proppant sticking in removing downhole tools
08/02/2005US6923259 Multi-lateral well with downhole gravity separation
08/02/2005US6923258 In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
08/02/2005US6923257 pyrolysis of oils in well bores to form synthesis gas
08/02/2005CA2447254C Well cavity positioning method
08/02/2005CA2365554C Straddle packer systems
08/02/2005CA2327392C Reverse flow gas separator for progressing cavity submergible pumping systems
08/02/2005CA2320195C Sidepocket mandrel for orienting a gas lift valve
07/2005
07/29/2005CA2484465A1 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids
07/28/2005WO2005068778A1 Method of consolidating an underground formation
07/28/2005WO2005031116A3 Procedure and apparatus for collection of free methane gas from the sea bottom
07/28/2005US20050164894 Water soluble relative permeability modifier comprising polymer with hydrophilic and polar hydrophobic monomers such as dimethylaminoethyl methacrylate or dimethylaminopropyl methacrylamide; and vinyl amine, vinyl alcohol, and/or alkyl acrylate; subterranean formations; enhanced oil recovery
07/28/2005US20050163640 Rotary drivehead for downhole apparatus
07/28/2005US20050161228 Apparatus for radially expanding and plastically deforming a tubular member
07/28/2005US20050161226 Tubing expansion
07/28/2005US20050161223 Flying valve and well production method
07/28/2005US20050161222 Apparatus and methods for forming a lateral wellbore
07/28/2005US20050161219 Filter cake removal fluid
07/28/2005US20050161217 Method and system for producing methane gas from methane hydrate formations
07/28/2005US20050161216 Slant entry well system and method
07/28/2005DE202005004815U1 Probe end piece changing flow direction in a ground heat extraction process comprises a U-shaped pipe bend joined to inflow and outflow pipes being sunk into a borehole
07/28/2005CA2548329A1 Method of consolidating an underground formation
07/27/2005EP1556581A1 Methods of completing wells in unconsolidated formations
07/27/2005EP1556580A1 Temperature limited heaters for heating subsurface formations or wellbores
07/27/2005CN2713169Y Screw pump drive unit with blowout preventing pipe
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