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)
11/1995
11/16/1995WO1995030864A1 Facility for effecting energy exchange between the ground and an energy exchanger
11/16/1995WO1995030863A1 Facility for effecting energy exchange between the ground and an energy exchanger
11/16/1995WO1995030853A1 Connection system for subsea pipelines
11/15/1995EP0681641A1 Method of reducing water in oil wells
11/15/1995EP0681640A1 Application of n,n-dialkylamides to reduce precipitation of asphalt from crude oil
11/15/1995CN1111735A WK splitter
11/14/1995US5465793 Spoolable flexible hydraulic controlled annular control valve
11/14/1995US5465791 Resilient spider for well installation
11/14/1995US5465789 Apparatus and method of magnetic well stimulation
11/14/1995US5465747 Pressure valve assembly for use in gas-lift producing oil-wells
11/09/1995WO1995022681A3 Tubing rotator and hanger
11/09/1995DE4418125C1 Method of decontaminating ground
11/08/1995CN2212073Y Shell-free delay press explosive bomb
11/08/1995CN1111335A Process for moving highly viscous petroleum products
11/08/1995CN1111317A Coiled well screen
11/07/1995US5464309 Dual wall multi-extraction tube recovery well
11/07/1995US5464188 Well pump base
11/07/1995US5464061 Cryogenic coal bed gas well stimulation method
11/07/1995US5464059 Apparatus and method for supplying fluid into different zones in a formation
11/02/1995WO1995029322A1 Method of working the bottom-hole zone of a seam
11/02/1995EP0679797A2 Method and apparatus for erosive stimulation of open hole formations
11/02/1995EP0679450A1 High vacuum extraction of soil contaminants along preferential flow paths
11/02/1995EP0517747B1 Method and system for underground gasification of coal or browncoal
11/01/1995CN1111002A Method for testing water-covering oil layer saturation degree by using normal boring sample-test reference
10/1995
10/31/1995US5463164 Waste disposal in subterranean earth formations
10/31/1995US5462129 Method and apparatus for erosive stimulation of open hole formations
10/31/1995US5462121 Failsafe liner installation assembly and method
10/31/1995US5462120 Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
10/31/1995US5462117 Tubing conveyed perforating system with fluid loss control
10/31/1995US5462116 Method of producing methane gas from a coal seam
10/26/1995WO1995028547A1 Improving hydrocarbon flow from low permeability rock
10/26/1995WO1995028546A1 Milling apparatus and method for well casing
10/26/1995WO1995028316A1 A device for oil production at great depths at sea
10/26/1995WO1995028230A1 Apparatus for downhole cyclone separation
10/25/1995EP0678151A1 Downhole roller vane motor and roller vane pump.
10/25/1995EP0516715B1 Improvements relating to hydrocyclone systems
10/25/1995CN2210951Y Mechanical three-point type vertically oil-increased activator
10/25/1995CN1110752A Reciprocating lifting device
10/25/1995CN1110751A Mast type numerically controlled beam-pumping unit
10/24/1995US5460416 Perforated fiber reinforced pipe and couplings for articulating movement
10/24/1995US5460227 Undersea integrated repressurization system and method
10/24/1995US5460226 Comprising polysaccharide, borate crosslinker, oxidative breaker and precursor that hydrolyzes to lower alkalinity
10/24/1995US5460225 Gravel packing process
10/24/1995US5460224 Well purge and sample apparatus and method
10/24/1995US5460223 Method and system for oil recovery
10/24/1995US5460095 Mounting apparatus for expendable bar carrier shaped-charges
10/24/1995US5460093 Programmable electronic time delay initiator
10/24/1995CA2006931C Arrangement for patching off troublesome zones in a well
10/18/1995CN2210248Y Sealing sleeve of mud pump rod
10/17/1995US5458860 Dissolving
10/17/1995US5458440 Offshore pipeline system
10/17/1995US5458200 System for monitoring gas lift wells
10/17/1995US5458199 Assembly and process for drilling and completing multiple wells
10/17/1995US5458196 For supporting equipment in a well casing below a tubing string
10/17/1995US5458193 Simultaneous injection of an oxidant with a hydrocarbon mixture and water into upper zone of formation; combustion
10/17/1995US5458192 Method for evaluating acidizing operations
10/14/1995CA2121179A1 Pump for evacuating water from a gas producing well by pumping the water to a lower water absorption zone
10/12/1995WO1995027123A1 Method for disposing carbon dioxide in a coalbed and simultaneously recovering methane from the coalbed
10/11/1995EP0676530A1 Method of extracting gas from fluid-bearing strata
10/11/1995EP0418374B1 Sulfate scale dissolution
10/10/1995US5456837 Multiple cyclone apparatus for downhole cyclone oil/water separation
10/10/1995US5456318 From a well
10/10/1995US5456317 Buoyancy assisted running of perforated tubulars
10/10/1995US5456315 Horizontal well gravity drainage combustion process for oil recovery
10/10/1995CA2052202C Method and apparatus for oil well stimulation
10/10/1995CA2036936C Metal-to-metal sealing pipe swivel joint
10/04/1995EP0675262A1 A perforating gun having a plurality of charges
10/04/1995EP0674744A1 Assembly and process for drilling and completing multiple wells.
10/04/1995EP0674602A1 Removing vocs from groundwater
10/04/1995CN1109548A Well screen having a uniform outer diameter
10/03/1995US5455780 Computer-implemented method of simulating material flow in gas/oil wells
10/03/1995US5454666 Method for disposing of unwanted gaseous fluid components within a solid carbonaceous subterranean formation
10/03/1995US5454430 Lateral wellbore completion apparatus
09/1995
09/28/1995WO1995025607A1 Waste disposal in subterranean earth formations
09/27/1995EP0674095A2 Well screen with coiled element
09/27/1995EP0673467A1 Method for fracturing high temperature subterranean formations
09/27/1995EP0673466A1 Turbo-pump for conveying highly viscous substances.
09/27/1995EP0649352A4 Waste disposal in hydraulically fractured earth formations.
09/26/1995US5452765 For removing fluids from a subterranean formation
09/26/1995US5452763 Method and apparatus for generating gas in a drilled borehole
09/26/1995CA2020229C Well treatment method
09/21/1995WO1995025239A1 Device for permanent joining of tubes
09/21/1995WO1995025002A1 Improvements relating to the lining of pipelines and passageways
09/20/1995EP0672860A1 Stable emulsion of viscous crude hydrocarbon in aqueous buffer solution and method for forming and transporting same
09/20/1995CN2208098Y Electric cable connecting non-shelled fracturing bullet
09/19/1995US5450902 Method and apparatus for producing and drilling a well
09/19/1995US5450901 Apparatus and process for producing and reinjecting gas
09/19/1995US5450900 Well fluid isolation and sample apparatus and method
09/19/1995US5450899 Method of supplying gas to gas consumers
09/19/1995US5450898 Gravity enhanced maintenance screen
09/19/1995CA1337018C Process for the transport of an hydrate-forming fluid
09/14/1995WO1995024608A1 Expendable ebw firing module for detonating perforating gun charges
09/14/1995WO1995024543A1 Method of producing a fluid from an earth formation
09/14/1995WO1995024542A1 Methods and compositions for fracturing subterranean formations
09/14/1995WO1995024280A1 Method and device for removing low-density liquid impurities which are not easily volatilized, in the form of water from soil through which groundwater flows
09/14/1995DE4407835A1 Verfahren und Vorrichtung zum Entfernen von schwerflüchtigen flüssigen Verunreinigungen geringerer Dichte als Wasser aus dem grundwasserdurchströmten Erdreich Method and apparatus for removing nonvolatile organic impurities lower density than water from the groundwater-flow soil
09/13/1995EP0671549A1 Method of producing a fluid from an earth formation
09/13/1995EP0671548A1 Flow line structure for interconnection of a satellite well to a subsea production system
09/13/1995EP0671458A2 Process for moving highly viscous petroleum products
09/13/1995EP0670965A1 A method of operating a compressor system in a subsea station for transporting a well stream, and a compressor system in a subsea station for transporting a well stream
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