SOLVENT PRODUCTION CONTROL METHOD IN SOLVENT-STEAM PROCESSES

A method for producing hydrocarbons from a subterranean reservoir, comprising: injecting steam and a solvent into the reservoir to mobilize viscous hydrocarbons in the reservoir, wherein mobilized hydrocarbons drain towards a production zone, the production zone comprising a liquid phase comprising...

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Bibliographische Detailangaben
Hauptverfasser: OLSON, JEFFREY, KOCHHAR, ISHAN DEEP S, FILSTEIN, ALEXANDER ELI, AVILA, NATASHA POUNDER, BEN-ZVI, AMOS
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:A method for producing hydrocarbons from a subterranean reservoir, comprising: injecting steam and a solvent into the reservoir to mobilize viscous hydrocarbons in the reservoir, wherein mobilized hydrocarbons drain towards a production zone, the production zone comprising a liquid phase comprising water and mobilized hydrocarbons, and a gas phase comprising the solvent; producing a fluid comprising the liquid phase and the gas phase, through a production well, the production well penetrating the liquid phase in the production zone; controlling a ratio of produced gas phase to produced liquid phase in the produced fluid, wherein the controlling comprises adjusting a flow rate of the fluid in the production well so as to raise or lower a liquid level of the liquid phase surrounding the production well, thus reducing or increasing flow of the solvent in the gas phase into the production well through the liquid phase in the production zone.