Abstract: The numerous researches and applied results at home and abroad indicate that injecting CO₂ into reservoir may greatly enhance oil recovery (EOR) and realize the long-term and in-situ geologic storage of CO₂ . This paper presents the investigation of the status of CO₂ storage and related EOR abroad and the latest trend, and studies the impact of reservoir quality, fluid property and recovery process on CO₂ flooding and storage using numerical simulation method. And these influenced factors are comprehensively analyzed, according to the calculated results of reservoir parameters in pilot area, followed by that the evaluating indices for influencing CO₂ storage and related EOR are determined, and these factors are evaluated.

Key words: Carbon dioxide, geologic storage, sequestration, EOR, numerical simulation