Patent · US Active

Method and system for CO2 enhanced oil recovery

US11162342B2 · kind B2 · utility

0Cited by

5References

23Claims

0Family size

Assignee

EQUINOR ENERGY AS · NO

Inventors

Michael Drescher · Allensbach, DE
Torbjørn Fiveland · Skien, NO
Olav Kristiansen · Trondheim, NO
Thomas Levy · Paris, FR
Knut Arild Maråk · Trondheim, NO
Bengt Olav Neeraas · Trondheim, NO
Per Ivar Karstad · Bratsberg, NO

Key dates

Filing date	Feb 7, 2018
Grant date	Nov 2, 2021
Priority date	—
Expiry date	Jul 24, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P90/70
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Methods of Enhanced Oil Recovery (EOR) from an oil reservoir by CO2 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 CO2 gas and hydrocarbon gas; 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 CO2 to form an injection stream; and injecting the injection stream into the reservoir. Systems for EOR from an oil reservoir by CO2 flooding are also disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.