METHOD FOR EXTRACTING HYDROCARBONS
The present invention relates to a method for extracting hydrocarbons from a subterranean formation, comprising: injecting a volume of a first solution comprising polymer into the subterranean formation, the first solution having a salinity which is lower than the salinity of water in the subterrane...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
19.10.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention relates to a method for extracting hydrocarbons from a subterranean formation, comprising: injecting a volume of a first solution comprising polymer into the subterranean formation, the first solution having a salinity which is lower than the salinity of water in the subterranean formation; injecting a volume of a second solution comprising at least one surfactant and polymer into the subterranean formation, the second solution having substantially the same salinity as the first solution; injecting a volume of a third solution comprising polymer into the subterranean formation, the third solution having a salinity which is lower than the salinity of the first and the second solutions;and collecting hydrocarbons displaced by the injected solutions. |
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Bibliography: | Application Number: EP20190848939 |