Statoil Petroleum As

Equinor Energy As

Philip Sefton Ringrose

Bamshad Nazarian

A method of Enhanced Oil Recovery from oil zones in a subterranean geological formation, and from oil zones. The method including: a first injecting step of injecting a first composition including COinto the subterranean geological formation for a period of time; a second injecting step of injecting a second composition including COand a hydrocarbon into the subterranean geological formation for a period of time, wherein the first composition and the second composition are different; and extracting oil from the subterranean geological formation.

[object Object]

The present invention relates to a method of storing COin a geological formation, said method comprising (i) injecting a first composition comprising COinto said formation; and (ii) injecting a second composition comprising COand at least one COsoluble polymer into said formation, wherein steps (i) and (ii) are performed separately and in any order and wherein said first and second compositions are different.

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Trondheim, Norway

Philip Sefton Ringrose