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)
07/2000
07/05/2000EP1015094A4 Radial-flow filter and method of manufacture
07/05/2000EP1015094A1 Radial-flow filter and method of manufacture
07/05/2000EP1015092A1 Well casing assembly with erosion protection for inner screen
07/05/2000EP1012443A4 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production
07/05/2000EP0764235A4 Method for fracturing and propping a subterranean formation
07/05/2000CN2386214Y Beam-pumping unit for puming underground petroleum
07/05/2000CN2386194Y All-path compound perforation device for oil gas well
07/05/2000CN2386193Y Double-guard and bidirectional shut-off water-soluble controller
07/05/2000CN1258709A Oil-base aluminium phosphate gelatinizer for fracture liquid and its preparation
07/05/2000CN1054178C Iron control in oil well fracturing fluids containing water
07/05/2000CA2293891A1 Multi-valve fluid flow control system and method
07/04/2000US6083407 Microporous diffusion apparatus
07/04/2000US6082455 Combination side pocket mandrel flow measurement and control assembly
07/04/2000US6082454 Spooled coiled tubing strings for use in wellbores
07/04/2000US6082452 Oil separation and pumping systems
07/04/2000US6082450 Apparatus and method for stimulating a subterranean formation
07/04/2000CA2142001C Mixed well stream drive drainage process
06/2000
06/29/2000WO2000037777A1 Novel fluids and techniques for maximizing fracture fluid clean-up
06/29/2000WO2000037776A1 Method for generating a shock wave in the surrounding area of a well
06/29/2000WO2000037773A1 Downhole sealing for production tubing
06/29/2000WO2000037772A1 Tubing anchor
06/29/2000WO2000037771A1 Drilling method
06/29/2000WO2000037770A1 Closed loop chemical injection and monitoring system for oilfield operations
06/29/2000WO2000037768A1 Method and apparatus for expanding a liner patch
06/29/2000WO2000037767A2 Profile formation
06/29/2000WO2000037766A2 Procedures and equipment for profiling and jointing of pipes
06/29/2000CA2686423A1 Method and apparatus for drilling and lining a wellbore
06/29/2000CA2646563A1 Tubing anchor
06/29/2000CA2565202A1 Downhole sealing for production tubing
06/28/2000EP1012443A1 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production
06/28/2000EP1012441A1 Apparatus and method for installing a branch junction from a main well
06/28/2000CN2385106Y Chain type energy-saving beam-pumping unit
06/28/2000CN2385103Y Three valve moving cylinder sand-proof pump
06/28/2000CN2385102Y Multifunctional oil-well pump
06/27/2000US6081065 Pumping system
06/27/2000US6079498 Method and equipment for the flow of offshore oil production
06/27/2000US6079495 Method for establishing branch wells at a node of a parent well
06/27/2000US6079494 Methods of completing and producing a subterranean well and associated apparatus
06/27/2000US6079493 Methods of completing a subterranean well and associated apparatus
06/27/2000US6079491 Dual injection and lifting system using a rod driven progressive cavity pump and an electrical submersible progressive cavity pump
06/27/2000US6079488 Lateral liner tieback assembly
06/22/2000WO2000036272A1 Foamed nitrogen in liquid co2 for fracturing
06/22/2000WO2000036271A1 Method and apparatus for enhancing oil recovery
06/22/2000WO2000036270A1 An arrangement and method for the transport, storage and processing of hydrocarbons
06/22/2000WO2000035608A1 Ground water decontamination using lower-side thermal barrier
06/21/2000WO2000015946A1 Method for oil field development
06/21/2000EP1009910A1 Device and method for heating a treating fluid
06/21/2000EP1009909A1 Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit
06/21/2000EP1009908A1 Method and device for production of hydrocarbons
06/21/2000DE19857447A1 Anordnung und Verfahren zur Förderung, Speicherung und Verarbeitung von Kohlenwasserstoffen Apparatus and method for the production, storage and processing of hydrocarbons
06/21/2000DE19839340C1 Verfahren zum Bau eines Brunnens A method for constructing a well
06/21/2000CN2384002Y Heavy beam-pumping unit
06/21/2000CN2384000Y Three-horse head pumping unit
06/21/2000CN2383977Y Layer testing working drum for water injection well
06/21/2000CN2383976Y Heat thickened oil recovery device using heat conduction oil
06/21/2000CN2383975Y Thickened oil recovery shunt inserting pipe
06/21/2000CN2383974Y Ring fume duct type heating stove
06/21/2000CN2383973Y Negative pressure impacting deplugging production increasing device for oil-water well
06/21/2000CN1257564A Sub-sea pumping system and associated method
06/21/2000CN1257563A Oil recovery method using an emulsion
06/21/2000CN1257154A Microorganism composite oil-production method
06/21/2000CN1053725C Coiled well screen
06/21/2000CA2286245A1 Method of oilfield development
06/20/2000US6076599 Methods using dual acting pumps or dual pumps to achieve core annular flow in producing wells
06/20/2000US6076398 Method for measuring of flow and flowmeter
06/15/2000WO2000034198A1 Recovery of hydrocarbons in oil wells by injection of treated inert gases obtained form the industrial effluence
06/15/2000WO2000033942A1 Method for recovering co¿2?
06/15/2000DE19919555C1 Extraction of geothermal energy from blind bores involves closed circuit feed of heat transmission medium with first chamber in heat exchanger tube for feed of cold fluid
06/14/2000EP1008719A1 Method and apparatus for remote control of multilateral wells
06/14/2000EP1007820A1 Use of static mixing elements in connection with flow of gas and liquids through a production tubing
06/14/2000EP1007819A1 Prepacked flush joint well screen
06/14/2000CN2382855Y Connector for multiple well machine pump
06/14/2000CN2382839Y Heavy crude platform central external transport device
06/14/2000CN2382838Y High temperature steam injection first pipe string
06/14/2000CN2382837Y Annular blending liquid viscosity reducing stirrer
06/14/2000CN2382836Y Controllable porosity sand control screen for oil field downhole
06/14/2000CN2382835Y Multifunction sand controller of oil well
06/14/2000CN1256352A Coilable oil well screen pipe
06/14/2000CN1256350A Apparatus and method for extracting fluid from oil well drilled in stratum
06/13/2000US6076046 Post-closure analysis in hydraulic fracturing
06/13/2000US6073777 Sand resistant fluid swivel
06/13/2000US6073695 Device and method for treating a well bore
06/13/2000US6073692 Expanding mandrel inflatable packer
06/13/2000US6073659 Method and apparatus of removing liquid from underground cavity by directional drilling
06/11/2000CA2255413A1 Foamed nitrogen in liquid co2 for fracturing
06/08/2000WO2000033492A1 Method and apparatus for remote actuation of a downhole device in a subsea well
06/08/2000WO2000032939A1 Gas displaced chamber lift system
06/08/2000WO1998020233A3 Fluid separation and reinjection systems for oil wells
06/08/2000DE19853211A1 Brunnenrohr Well pipe
06/07/2000EP1006260A2 Drilling liner systems
06/07/2000EP0723623A4 Horizontal natural gas storage caverns and methods for producing same
06/07/2000CN2381781Y Pipe column for regulating separated layer water injection
06/07/2000CN2381780Y Upper suspended hole top for water injection well
06/07/2000CN2381779Y Self controlled oil pay valve
06/07/2000CN2381778Y Simple hole top for oil sucking well
06/07/2000CN2381777Y Hydraulic reciprocal underground controlled valve
06/07/2000CN2381776Y 绝缘棒 Insulated rod
06/07/2000CN2381775Y Isolative hanging rod
06/07/2000CN2381765Y Deep well pipe
06/07/2000CN1053255C Prodn. pipe for prodn. of oil or gas from oil or gas reservoir
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