caa a22 4500 606226095 CHVBK 20210128101151.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10553-015-0600-2 doi (NATIONALLICENCE)springer-10.1007/s10553-015-0600-2 Improved Method for Calculating Minimum Miscibility Pressure for Gas Flooding [Elektronische Daten] [Dali Hou, Yongming He, Pingya Luo, Lei Sun, Yong Tang, Yi Pan] Minimum miscibility pressure (MMP) is a key parameter determining the feasibility of complete miscibility of oil and gas. Using a slim-tube model, we have experimentally established the MMP for gas and six oil samples. We propose an improved mathematical model for determining the MMP, designed using 97 groups of MMP data for hydrocarbons (18 groups for lean-gas flooding and 79 groups for rich-gas flooding). The model obtained is universal and is a function of the reservoir temperature, the average molecular weight of the C 7+ oil fraction, and the mole fraction of volatile components (CH 4 and N 2 ) and intermediate components (CO 2 , H 2 S, C 2 -C 6 ) in the crude oil and in the injected gas. We compare our proposed model with widely used empirical models, showing considerable convergence between the experimental data and the calculations; the percentage average absolute relative error (%AARE) is 7.11%. Springer Science+Business Media New York, 2015 minimum miscibility pressure nationallicence gas flooding nationallicence optimization algorithm nationallicence Hou Dali College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut He Yongming College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut Luo Pingya College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut Sun Lei College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut Tang Yong College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut Pan Yi College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 51/3(2015-07-01), 257-267 0009-3092 51:3<257 2015 51 10553 https://doi.org/10.1007/s10553-015-0600-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10553-015-0600-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hou Dali College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut NATIONALLICENCE 700 1- He Yongming College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut NATIONALLICENCE 700 1- Luo Pingya College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut NATIONALLICENCE 700 1- Sun Lei College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut NATIONALLICENCE 700 1- Tang Yong College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut NATIONALLICENCE 700 1- Pan Yi College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China aut NATIONALLICENCE 773 0- Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 51/3(2015-07-01), 257-267 0009-3092 51:3<257 2015 51 10553