Molecular dynamics simulation on the displacement behaviour of crude oil by CO₂/CH₄ mixtures on a silica surface.

ABSTRACT: Produced gas re-injection is an effective and eco-friendly approach for enhancing oil recovery from shale oil reservoirs. However, the interactions between different gas phase components, and the oil phase and rocks are still unclear during the re-injection process. This study aims to investigate the potential of produced gas re-injection, particularly focusing on the effects of methane (CH₄) content in the produced gas on shale oil displacement. Molecular dynamics simulations were employed to analyze the interactions between gas, oil, and matrix phases with different CH₄ proportions (0%, 25%, 50%, and 100%), alkanes and under various burial depth. Results show that a 25% CH₄ content in the produced gas achieves almost the same displacement effect as pure c

SUBMITTER: Feng P 

PROVIDER: S-EPMC10880544 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature