A PROCESS FOR ENHANCED OIL RECOVERY IN COMBINATION WITH THE PRODUCTION OF HYDROCARBONS FROM SYNTHESIS GAS

摘要

A process for enhanced oil recovery in combination with the production of hydrocarbons from synthesis gas, the process comprising injecting a gaseous mixture comprising carbon dioxide into a subsurface reservoir to enhance the recovery of hydrocarbons from the reservoir, wherein the carbon dioxide content in the gaseous mixture has been enriched by cryogenic separation of the off-gas recovered from said conversion of synthesis gas into liquid hydrocarbons. Typically a carbon dioxide depleted stream including methane and hydrogen is also produced and used as a fuel gas, particularly for a gas to liquids plant.