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1887-05-24 |
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1919-06-09 |
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1919-12-19 |
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Oil-well heater
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1932-11-12 |
1936-03-10 |
Technicraft Engineering Corp |
Refrigerating packer
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1932-11-12 |
1936-03-10 |
Technicraft Engineering Corp |
Method of packing wells
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1946-01-07 |
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Method of electrothermal production of shale oil
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1947-06-14 |
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Standard Oil Dev Co |
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1948-04-14 |
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Thermal drive method for recovery of oil
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1952-03-07 |
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Method of recovering oil and gases from non-consolidated bituminous geological formations by a heating treatment in situ
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1952-04-17 |
1957-06-11 |
Electrotherm Res Corp |
Method of underground electrolinking and electrocarbonization of mineral fuels
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1953-06-30 |
1957-11-05 |
Exxon Research Engineering Co |
Recovery of uncontaminated cores
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1957-11-19 |
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Process for recovery of petroleum from sands and shale
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1955-02-11 |
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Situ recovery from carbonaceous deposits
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1955-08-01 |
1959-05-19 |
California Research Corp |
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1955-09-20 |
1958-08-12 |
California Research Corp |
Methods of igniting a gas air-burner utilizing pelletized phosphorus
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1956-10-02 |
1959-07-21 |
California Research Corp |
Gas-air burner with check valve
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1957-07-26 |
1964-04-07 |
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Method of in situ heating of subsurface preferably fuel containing deposits
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1958-03-05 |
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1958-05-09 |
1961-10-17 |
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Method and apparatus for augmenting oil recovery from wells by refrigeration
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1958-06-11 |
1961-12-19 |
Texaco Inc |
Method for producing hydrocarbons in an in situ combustion operation
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1958-11-03 |
1961-03-14 |
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Petroleum recovery from carbonaceous formations
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1959-02-24 |
1960-07-12 |
Dow Chemical Co |
Treatment of subterranean formations containing water-soluble minerals
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1959-04-30 |
1960-09-13 |
Phillips Petroleum Co |
In situ exploitation of lignite using steam
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1959-12-09 |
1963-06-25 |
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Burners for use in bore holes in the ground
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1960-05-09 |
1964-06-16 |
Phillips Petroleum Co |
In situ electrolinking of oil shale
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1960-06-20 |
1963-10-08 |
Phillips Petroleum Co |
Process for producing oil shale in situ by electrocarbonization
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1961-03-02 |
1963-11-05 |
Pure Oil Co |
Well-bore gas burner
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1961-08-10 |
1965-02-23 |
Dow Chemical Co |
Removal of calcium sulfate deposits
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1961-11-02 |
1965-05-18 |
Conch Int Methane Ltd |
Method of freezing an earth formation
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1961-12-04 |
1969-04-08 |
Continental Oil Co |
Underground sealing
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1962-01-12 |
1965-05-18 |
Shell Oil Co |
Prestressing a pipe string in a well cementing method
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1962-05-04 |
1964-09-22 |
Jersey Prod Res Co |
Method and apparatus for electrical heating of oil-bearing formations
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1962-05-18 |
1965-04-27 |
Phillips Petroleum Co |
Protection of well casing for in situ combustion
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1962-06-26 |
1965-07-13 |
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1962-10-24 |
1965-12-28 |
Chevron Res |
Apparatus for burning a combustible mixture in a well
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1963-02-04 |
1966-11-29 |
Pan American Petroleum Corp |
Process for producing electrical energy from geological liquid hydrocarbon formation
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1963-02-07 |
1965-09-14 |
Socony Mobil Oil Co Inc |
Method for recovery of hydrocarbons by in situ heating of oil shale
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1963-03-21 |
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1963-04-10 |
1966-03-22 |
Equity Oil Company |
Recovery of petroleum products from oil shale
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1963-04-18 |
1964-06-03 |
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Constructing a frozen wall within the ground
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1963-06-24 |
1966-07-26 |
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Automatic safety flasher signal for automobiles
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1963-06-27 |
1966-03-22 |
Chevron Res |
Downhole burner for wells
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1963-12-05 |
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Reservoir for storage of volatile liquids and method of forming the same
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1963-12-11 |
1966-11-15 |
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In situ pyrolysis of oil shale formations
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1963-12-20 |
1966-06-07 |
Gulf Research Development Co |
Down-hole fluid fuel burner
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1964-04-13 |
1966-12-27 |
Shell Oil Co |
Thermal oil recovery
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1964-05-19 |
1966-01-11 |
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Oil shale retorting with shale oil recycle
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1964-07-16 |
1966-09-13 |
Pittsburgh Plate Glass Co |
Mining process
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1964-08-31 |
1966-11-08 |
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Production of oil from oil shale through fractures
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1964-11-12 |
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Bottom-hole electric heater
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1965-02-01 |
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Halliburton Co |
Aeration blanket
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Method for in situ recovery of solid or semi-solid petroleum deposits
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1966-05-03 |
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Method of and apparatus for freezing water-bearing materials
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In situ thermal recovery of oil from an oil shale
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Production of oil shale by in situ pyrolysis
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Thermal conversion of oil shale into recoverable hydrocarbons
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Producing oil from oil shale by heating with hot gases
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1967-04-19 |
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Shale oil recovery process using heated oil-miscible fluids
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Selective formation plugging
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Recovery of oil from oil shale
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1967-11-29 |
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Recovery of shale oil
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Arrangement for solidifications of earth formations
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Underground fluid storage in permeable formations
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1968-09-30 |
1970-05-26 |
Shell Oil Co |
Method for producing shale oil from an oil shale formation
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Process of recovering oil and dawsonite from oil shale
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1968-10-30 |
1970-03-17 |
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Method of producing shale oil from a subterranean oil shale formation
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Method of recovering liquefiable components from a subterranean earth formation
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Cryo-thermal process for fracturing rock formations
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Recovery of aluminum compounds and oil from oil shale formations
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Method of recovering hydrocarbons by in situ combustion
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1970-12-15 |
Electrothermic Co |
Method and apparatus for recovery of minerals from sub-surface formations using electricity
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Electrical method and apparatus for the recovery of oil
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Tenneco Oil Co |
Method of increasing the permeability of a subterranean hydrocarbon bearing formation
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1970-02-12 |
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Occidental Petroleum Corp |
In situ process for recovery of carbonaceous materials from subterranean deposits
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Process for horizontally fracturing subsurface earth formations
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Separation of carbon dioxide from a natural gas stream
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Halogenating extraction of oil from oil shale
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Method and apparatus for electrically heating a subsurface formation
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Stair-step thermal recovery of oil
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Method of producing hydrocarbons from an oil shale formation
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Method of producing hydrocarbons from an oil shale formation containing nahcolite
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1970-12-31 |
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Union Carbide Canada Limited |
Ground freezing method
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Shale oil recovery from fractured oil shale
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Method of producing oil from an oil shale formation containing nahcolite and dawsonite
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Method of producing hydrocarbons from oil shale formations
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Multiple part key for conventional locks
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Method of producing oil from an oil shale formation
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In situ production of bitumen from oil shale
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Heating through fractures to expand a shale oil pyrolyzing cavern
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Production of bitumen from a tar sand formation
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Secondary recovery of oil by steam stimulation plus the production of electrical energy and mechanical power
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Reaming shells for drilling apparatus
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In situ oil shale retort with variations in surface area corresponding to kerogen content of formation within retort site
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Method of forming an in situ oil shale retort with void volume as function of kerogen content of formation within retort site
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Determining the locus of a processing zone in an in situ oil shale retort
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