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)
12/1987
12/01/1987US4710367 Hot water washing, leaching with hydrochloric acid
12/01/1987US4710061 Offshore well apparatus and method
12/01/1987US4709760 For an oil or gas well casing
11/1987
11/25/1987EP0246943A1 Process and installation to cause circulation of fluids by pumping
11/25/1987EP0246837A2 Well perforating apparatus
11/25/1987EP0246800A1 Particle-containing foams
11/24/1987US4708974 Enhanced hydrocarbon recovery by permeability modification with phenolic gels
11/24/1987US4708793 System for separating gas-liquid flowstreams
11/24/1987US4708206 Removing particulate matter from a non-dissoluble sand control pack
11/24/1987US4708200 Apparatus for maintaining clean fluid in a chamber in a subterranean well tool
11/24/1987CA1229548A1 Progressive sequence for viscous oil recovery
11/24/1987CA1229505A1 Method and device for measuring steam quality
11/24/1987CA1229479A1 Restoring permeability to a polymer plugged well
11/24/1987CA1229477A1 Polyalkoxy sulphonate, co.sub.2 and brine drive process for oil recovery
11/19/1987EP0245892A2 Apparatus for vibrating a pipe string in a borehole
11/17/1987US4706757 Wellhead supported subsea templates and methods
11/17/1987US4706752 Permeability recudtion, crude oil-insoluble nonhydrocarbon gas, surfactant
11/17/1987US4706751 Heavy oil recovery process
11/17/1987US4706750 Method of improving CO2 foam enhanced oil recovery process
11/17/1987US4706749 Method for improved oil recovery
11/17/1987CA1229298A1 Method of producing a stratified viscous oil reservoir
11/12/1987DE3626145A1 Method and arrangement for driving out volatile contaminants from the soil
11/11/1987EP0244425A1 Multiple-stage coal seam fracing method
11/11/1987CN86103088A Polybasic ester water base gel high temp. pressing crack liquid
11/10/1987US4705431 Method for forming a fluid barrier by means of sloping drains, more especially in an oil field
11/10/1987US4705114 Marine structure
11/10/1987US4705113 Method of cold water enhanced hydraulic fracturing
11/10/1987US4705109 Controlled retracting gasifying agent injection point process for UCG sites
11/10/1987US4705108 Method for in situ heating of hydrocarbonaceous formations
11/10/1987CA1229041A2 Multi-mode testing tool for use in a well bore
11/10/1987CA1229040A2 Displacement valve for use in displacing fluid in a downhole tool
11/10/1987CA1229039A2 Indexing assembly for a downhole tool
11/10/1987CA1229038A2 Operating assembly for a downhole tool
11/10/1987CA1229037A2 Ratchet assembly for transmitting movement in a downhole tool
11/04/1987CN86102963A Well bore reconpletion
11/03/1987US4704050 J-configured offshore oil production riser
11/03/1987US4703803 Composition and method for slowly dissolving siliceous material
11/03/1987US4703800 Method for consolidating formation surrounding borehole
11/03/1987US4703799 Technique for improving gravel pack operations in deviated wellbores
11/03/1987US4703798 In situ method for recovering hydrocarbon from subterranean oil shale deposits
11/03/1987US4703797 Sweep improvement in enhanced oil recovery
11/03/1987CA1228804A1 Hydraulic fracturing method employing special sand control technique
11/03/1987CA1228803A1 Method for forming a gravel packed horizontal well
11/03/1987CA1228802A2 Operating assembly for a downhole tool
11/03/1987CA1228801A2 Method of operating a multi-mode downhole tool
11/03/1987CA1228800A1 Tool for use in a testing string disposed in a well bore
11/03/1987CA1228782A1 Slot cutting apparatus
10/1987
10/28/1987EP0242472A1 Wel bore recompletion
10/28/1987CN87102797A Method and apparatus for extracting petroleum
10/27/1987US4703459 Directional acoustic logger apparatus and method
10/27/1987US4702832 Collapsable oil spillage recovery system
10/27/1987US4702647 Reduced J-tube pull force
10/27/1987US4702318 Controlling multizones of permeability using polymeric floatable spheres
10/27/1987US4702317 Steam foam floods with a caustic agent
10/27/1987US4702316 Injectivity profile in steam injection wells via ball sealers
10/27/1987US4702315 Method and apparatus for sonically stimulating oil wells to increase the production thereof
10/27/1987US4702314 Patterns of horizontal and vertical wells for improving oil recovery efficiency
10/27/1987CA1228534A1 Drainhole and downhole hot fluid generation oil recovery method
10/27/1987CA1228533A1 Heavy oil recovery
10/27/1987CA1228532A2 Method of operating a multi-mode downhole tool
10/27/1987CA1228471A1 Methods for acidizing subterranean formations and gelled acid compositions
10/20/1987US4701271 Treating oil-water-surfactant emulsions with strong inorganic acid
10/20/1987US4701107 Two stage pump sampler
10/20/1987US4700783 Method and apparatus for recovering liquids from a well bore
10/20/1987US4700781 Heavy crude oil production tool and method
10/20/1987US4700779 For recovering hydrocarbons from an underground formation
10/20/1987US4700777 Downhole tool
10/20/1987US4700776 Sand control devices and method of installation thereof
10/20/1987US4700567 Rheology test system
10/20/1987CA1228226A1 Sintered low density gas and oil well proppants from a low cost unblended clay material of selected compositions
10/19/1987EP0202221A4 Method and means to pump a well.
10/15/1987DE3612468A1 Process for producing a filtering well, and filtering well with large capacity
10/13/1987US4699719 Process and apparatus for utilizing engine exhaust heat in oil field operations
10/13/1987US4699429 For boring a hole in a coal seam
10/13/1987US4699214 Salt-tolerant alkyl aryl sulfonate compositions for use in enhanced oil recovery processes
10/13/1987US4699213 Alternate injections of water, air and hydrocarbons; separation of combustion zones
10/13/1987CA1228024A1 Multiple level methane drainage method
10/13/1987CA1228023A1 Bitumen production and substrate stimulation
10/13/1987CA1228022A1 Miscible oil flooding at controlled velocities
10/13/1987CA1228021A1 Solvent assisted steam injection process for recovery of viscous oil
10/13/1987CA1228020A1 Solvent assisted steam injection process for recovery of viscous oil
10/13/1987CA1228019A1 Charge holder
10/08/1987WO1987005974A1 Two stage pump sampler
10/08/1987DE3705902A1 Well head for refuse-dump degassing
10/06/1987US4698152 Cyclone separators, recycling, water polluted with oil
10/06/1987US4697642 Gravity stabilized thermal miscible displacement process
10/06/1987CA1227745A1 Bitumen production and substrate stimulation with flow diverter means
10/06/1987CA1227744A1 Steam drive oil recovery method utilizing a downhole steam generator and anti clay-swelling agent
10/06/1987CA1227743A1 Completion for tar sand substrate
10/06/1987CA1227742A1 Method for gravel packing horizontal wells
09/1987
09/30/1987EP0238535A1 Slug-catcher that can be pigged.
09/30/1987EP0238491A1 Cyclone separator.
09/30/1987CN87102224A Method for oil tri-production with escaping oil gas at deep hole
09/29/1987US4696802 Drilling geothermal wells with removal of H2 S
09/29/1987US4696494 Flowline adjustable joint
09/29/1987US4696453 Coupling device for submarine pipeline system
09/29/1987US4696345 Hasdrive with multiple offset producers
09/29/1987CA1227422A1 Connection between a submarine well head and a surface support
09/29/1987CA1227420A1 Miscible flooding and water production of previously water flooded reservoirs
09/29/1987CA1227419A1 Miscible flooding of previously water flooded reservoirs
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