Method and system for CO2 enhanced oil recovery

Abstract Method and system for CO 2 Enhanced Oil Recovery Methods of Enhanced Oil Recovery (EOR) from an oil reservoir by C02 flooding are disclosed. One method comprises producing a well stream from the reservoir; separating the well stream into a liquid phase and a gas phase with a first gas/liqui...

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Hauptverfasser:	Kristiansen, Olav, Drescher, Michael, Fiveland, Torbjørn, Levy, Thomas, Maråk, Knut Arild, Karstad, Per Ivar, Neeraas, Bengt Olav
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Zusammenfassung:	Abstract Method and system for CO 2 Enhanced Oil Recovery Methods of Enhanced Oil Recovery (EOR) from an oil reservoir by C02 flooding are disclosed. One method comprises producing a well stream from the reservoir; separating the well stream into a liquid phase and a gas phase with a first gas/liquid separator, wherein the gas phase comprises both C02 gas and hydrocarbon gas; 10 cooling the gas phase with a first cooler; compressing the gas phase using a first compressor into a compressed stream; mixing the compressed stream with an external source of C02 to form an injection stream; and injecting the injection stream into the reservoir. Systems for EOR from an oil reservoir by C02 flooding are also disclosed. [Fig. 3] {73