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)
12/1997
12/09/1997	US5695008 Preform or matrix tubular structure for casing a well
12/04/1997	WO1997045624A1 Well head system
12/04/1997	WO1997045622A1 Wellbore resonance tools
12/04/1997	WO1997033070A3 Downhole flow stimulation in a natural gas well
12/03/1997	CN2269463Y Four parameter testing instrument for high temperature and high pressure
12/03/1997	CN2269462Y Sperator for oil and sand
12/02/1997	US5693225 Downhole fluid separation system
12/02/1997	US5692567 In an underground well bore
12/02/1997	US5692565 Apparatus and method for sampling an earth formation through a cased borehole
11/1997
11/27/1997	WO1997044405A1 Clay-free biodegradable wellbore fluid and method for using said fluid
11/27/1997	WO1997044146A1 Soil vapor extraction system
11/27/1997	DE19615171C1 Pump for extracting liquid specimens esp. water in e.g. reservoir or container
11/27/1997	CA2254920A1 Clay-free biodegradable wellbore fluid and method for using said fluid
11/26/1997	EP0808446A1 Well pipe perforating gun
11/26/1997	EP0760900B1 Process for the best possible extraction of gas in a large coal seam which has not or only limitedly been prospected
11/26/1997	CN2268782Y Oil and sand separating apparatus of micro-gap assembly
11/26/1997	CN2268781Y Automatic actuating device of hole shooting bullet
11/26/1997	CN1165908A Method for increasing methane recovery from subterranean coal formation by injection of tail gas from hydrocarbon synthesis process
11/25/1997	US5690390 Process for solution mining underground evaporite ore formations such as trona
11/25/1997	US5690175 Well tool for gravel packing a well using low viscosity fluids
11/25/1997	US5690172 Seal-sub packer and a setting tool therefor
11/25/1997	US5690171 Wellbore stimulation and completion
11/25/1997	CA2029548C Method for providing solids-free production from heavy oil reservoirs
11/19/1997	EP0807201A1 Multiple drain drilling and production apparatus
11/19/1997	CN1165236A Chemically induced stimulation of coal cleat formation
11/18/1997	US5689085 Explosive displacing bore hole tube
11/18/1997	US5688076 High-vacuum groundwater and soil remediation system and related method and apparatus
11/18/1997	US5688067 Coupler assembly for axially connecting two shafts
11/18/1997	US5687791 Method of well-testing by obtaining a non-flashing fluid sample
11/18/1997	CA2026396C Optimization of cyclic steam in a reservoir with inactive bottom water
11/18/1997	CA2026367C Intermittent steam injection
11/18/1997	CA2004944C Method for imparting selectivity to otherwise nonselective polymer profile control gels
11/13/1997	WO1997042396A1 Oil extracting installation incorporating manifold support mounting plates, plate and method of installation
11/12/1997	EP0806070A1 Electrical connections to encased electronic devices
11/12/1997	CN2267326Y High pressure filtering core placed on top of wells
11/12/1997	CN2267325Y Oil prodn. equipment with electric oil submersible screw pump
11/12/1997	CN1164607A Circulation-type microbial oil displacement and production method
11/11/1997	US5685374 Well completions in weakly consolidated formations
11/11/1997	US5685373 Assembly and process for drilling and completing multiple wells
11/09/1997	CA2204810A1 Filter for subterranean use
11/08/1997	CA2217891A1 Fracture treatment system for wells
11/06/1997	WO1997041354A1 Bending rod connection
11/06/1997	WO1997041333A1 Method and apparatus for remote control of multilateral wells
11/06/1997	WO1997041330A2 Multi-lateral wellbore system and method for forming same
11/06/1997	CA2499225A1 Multi-lateral wellbore systems and methods for forming same
11/06/1997	CA2252685A1 Bending rod connection
11/05/1997	EP0805259A2 Retrievable screen apparatus and methods of using the apparatus
11/05/1997	EP0804709A1 Hole in the ground for transfer of geothermal energy to an energy-carrying liquid and a method for production of the hole
11/05/1997	EP0804678A1 Method of creating a casing in a borehole
11/05/1997	EP0804299A1 Method and device for detecting soil pollution or cleaning up polluted soil in situ, respectively
11/04/1997	CA2047627C Gravel pack well completions with auger-screen
10/1997
10/30/1997	WO1997040273A1 Progressive cavity pumps using composite materials
10/30/1997	WO1997039984A1 Subsurface remediation method and apparatus
10/30/1997	WO1997033069A3 Downhole apparatus
10/30/1997	DE19616784A1 Ground water test device
10/29/1997	EP0705242B1 Surfactant, process for its production and use
10/29/1997	CN2266041Y Silt separator
10/29/1997	CN2266040Y Slant hole pumping unit
10/29/1997	CA2203446A1 Liquid level sensing for artificial lift control systems
10/28/1997	US5681130 Active cooling-based surface confinement system for thermal soil treatment
10/28/1997	US5680905 Apparatus and method for perforating wellbores
10/28/1997	US5680901 Radial tie back assembly for directional drilling
10/28/1997	US5680899 Electronic wellhead apparatus for measuring properties of multiphase flow
10/23/1997	WO1997039273A1 Method and equipment for launching pigs into undersea pipes
10/23/1997	WO1997025561A3 Subsea flexible pipe
10/22/1997	CN1162689A Apparatus and method for sampling earth formation through cased borehole
10/22/1997	CN1162688A Multifunctional sealed oil storing device of oil well
10/21/1997	US5678632 Injecting an enzyme substrate which is capable of being converted into an organic acid along with the enzyme
10/21/1997	CA2023281C Method for gravel packing wells
10/16/1997	WO1997038226A1 Apparatus and method for removing fluids from underground wells
10/16/1997	WO1997038207A1 Pump-off controller
10/15/1997	EP0800612A1 Method for determining closure of a hydraulically induced in-situ fracture
10/15/1997	EP0689637B1 Method and device for cementing a well
10/15/1997	CN2264805Y Underground flooding flowmeter for oil field
10/15/1997	CN2264804Y Automatic anchor with pumping
10/14/1997	US5676819 In situ removal of contamination from soil
10/14/1997	US5676208 Method of gravel packing a subterranean well
10/14/1997	US5676207 Soil vapor extraction system
10/14/1997	CA2106658C Drive head for downhole rotary pump
10/09/1997	WO1997037131A1 Electric pump with a linear motor
10/09/1997	WO1997037102A2 Downhole flow control devices
10/08/1997	CN1161403A Method for deep drilling hole and floating down pipe
10/07/1997	US5675088 Method and apparatus for automatic monitoring of tectonic stresses and quantitative forecast of shallow earthquakes
10/07/1997	US5674817 Consists of thioalkyl acid or derivativs as reducing agent for reducing ferric iron to ferrous iron, thus prevents the precipitation of ferric compounds or undesirable crosslinking of polymer
10/07/1997	US5674816 Olefin based frac fluid
10/07/1997	US5673760 Perforating gun including a unique high shot density packing arrangement
10/07/1997	US5673752 Method and apparatus for producing gas from a formation containing both gas and water
10/07/1997	CA2068223C Improved process for particle circulation in a porous medium
10/04/1997	CA2173409A1 Firing head
10/02/1997	WO1997036063A1 Heated offshore pipeline and method of manufacturing
10/01/1997	CN2263710Y Oil sand separating sieve tube
09/1997
09/30/1997	US5671813 Method and apparatus for intermittent production of oil with a mechanical interface
09/30/1997	CA2102770C Pumping system with downhole liquid from gas separation
09/25/1997	WO1997035094A1 Well pumping system and installation method
09/25/1997	WO1997035090A1 Hydrocarbon recovery method using inverted production wells
09/25/1997	CA2248757A1 Hydrocarbon recovery method using inverted production wells
09/24/1997	EP0796980A2 Zonal isolation methods and apparatus
09/23/1997	US5670737 Breaking up of rock and the like
09/23/1997	US5670093 Fluid distribution system and method utilizing a radial splitter
09/23/1997	US5669735 Offshore production platform and method of installation thereof

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