Optimization of triple-alternating-gas (TAG) injection technique for enhanced oil recovery in tight oil reservoirs
نویسندگان
چکیده
Abstract After single-gas (SG) injection operations in tight oil reservoirs, a significant amount of is still unrecovered. To increase productivity, several sequencing gas techniques have been utilized. Given the scarcity research on multiple-gas alternating schemes, this study propose an optimized triple-alternating-gas (TAG) for improved recovery. The performance TAG process was demonstrated through numerical simulations and comparative analysis. First, reservoir compositional model developed to establish properties composition reservoir; then, suitable combination SG, double (DAG), selected via simulation process. Second, best case parameters were derived. Finally, based recovery factors sweep efficiencies, DAG, performed mechanisms explained. following findings made: (1) DAG provided higher factor than SG economic advantages, CO 2 + CH 4 H S choice (2) results sensitivity analysis showed that critical optimization scheme are production pressures. (3) optimization, efficiency best. This promotes understanding enhanced (EOR) serves as guide field design EOR techniques.
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ژورنال
عنوان ژورنال: Journal of Petroleum Exploration and Production Technology
سال: 2021
ISSN: ['2190-0566', '2190-0558']
DOI: https://doi.org/10.1007/s13202-021-01369-x