Estimation of the minimum miscibility pressure for CO2-crude-oil systems by molecular dynamics simulation

被引:14
作者
Cui, Wuge [1 ]
Liang, Yunfeng [1 ]
Masuda, Yoshihiro [1 ]
Tsuji, Takeshi [1 ]
Matsuoka, Toshifumi [2 ]
Takahashi, Haruka [3 ]
机构
[1] Univ Tokyo, Sch Engn, Dept Syst Innovat, Tokyo 1138656, Japan
[2] Fukada Geol Inst, Tokyo 1130021, Japan
[3] JX Nippon Oil & Gas Explorat Corp, Tokyo 1008163, Japan
关键词
CO2-EOR; Minimum miscibility pressure; Molecular dynamics simulations; Condensing and vaporizing mechanism; CO2-oil volume ratio; Crude oil; VANISHING INTERFACIAL-TENSION; ENHANCED OIL-RECOVERY; DIGITAL OIL; WATER INTERFACE; FORCE-FIELD; CO2; PREDICTION; MODEL; EQUILIBRIA; MIXTURES;
D O I
10.1016/j.ptlrs.2022.08.001
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
CO2 injection is an effective enhanced oil recovery technique for energy security with the benefits of carbon neutrality. To reach the maximum oil recovery, the miscible condition between CO2 and oil needs to be maintained in the reservoir, which requires the operation pressure to be higher than the minimum miscibility pressure (MMP). There are two types of MMPs: the first-contact MMP (FC-MMP) and the multi-contact MMP (MC-MMP). In this study, molecular dynamics simulations were performed for the CO2-oil interface system using two simplified digital oil models: a Bakken dead oil with four lumping components and a live-crude-oil model with 50 types of oil molecules but with no asphaltenes and heavy oil fractions. The vanishing interfacial tension method was used to predict the MMP. Different CO2 -oil volume ratios were considered to mimic the different degrees of vaporization. To estimate the MMP accurately and rapidly, the interfacial tension in the low-pressure regime was used for the prediction. Consequently, different MMPs were obtained, where the MMP value increased with increasing CO2-oil volume ratio. FC-MMP can be predicted when the CO2-oil volume ratio is sufficiently high. When the CO2-oil volume ratio was approximately 9-10, MMP was closest to the actual MC-MMP value. The condensing and vaporizing mechanism was also studied at the molecular scale. Because pure CO2 was used, only the vaporizing effect on MMP occurred. It was found that the intermediate C2-C6 components have the main effect on the MMP calculation. This study can help to establish a computational protocol to estimate FC-MMP and MC-MMP, which are widely used in reservoir engineering. (c) 2022 The Authors. Publishing services provided by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/ by-nc-nd/4.0/).
引用
收藏
页码:1 / 10
页数:10
相关论文
共 64 条
[1]   Determination and evaluation of minimum miscibility pressure using various methods: experimental, visual observation, and simulation [J].
Abdurrahman, Muslim ;
Bae, Wisup ;
Permadi, Asep Kurnia .
OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES, 2019, 74
[2]   An improved method for estimating minimum miscibility pressure through condensation-extraction process under swelling tests [J].
Abdurrahman, Muslim ;
Permadi, A. K. ;
Bae, W. S. .
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2015, 131 :165-171
[3]   Gromacs: High performance molecular simulations through multi-level parallelism from laptops to supercomputers [J].
Abraham, Mark James ;
Murtola, Teemu ;
Schulz, Roland ;
Páll, Szilárd ;
Smith, Jeremy C. ;
Hess, Berk ;
Lindah, Erik .
SoftwareX, 2015, 1-2 :19-25
[4]   CO2 MINIMUM MISCIBILITY PRESSURE - A CORRELATION FOR IMPURE CO2 STREAMS AND LIVE OIL SYSTEMS [J].
ALSTON, RB ;
KOKOLIS, GP ;
JAMES, CF .
SOCIETY OF PETROLEUM ENGINEERS JOURNAL, 1985, 25 (02) :268-274
[5]  
Ayirala Subhash C., 2006, SPE/DOE Symposium on Improved Oil Recovery, V99606, DOI DOI 10.2118/99606-MS
[6]  
BENHAM AL, 1960, T AM I MIN MET ENG, V219, P229
[7]   MOLECULAR-DYNAMICS WITH COUPLING TO AN EXTERNAL BATH [J].
BERENDSEN, HJC ;
POSTMA, JPM ;
VANGUNSTEREN, WF ;
DINOLA, A ;
HAAK, JR .
JOURNAL OF CHEMICAL PHYSICS, 1984, 81 (08) :3684-3690
[8]   Canonical sampling through velocity rescaling [J].
Bussi, Giovanni ;
Donadio, Davide ;
Parrinello, Michele .
JOURNAL OF CHEMICAL PHYSICS, 2007, 126 (01)
[9]   Force Field Benchmark of Organic Liquids: Density, Enthalpy of Vaporization, Heat Capacities, Surface Tension, Isothermal Compressibility, Volumetric Expansion Coefficient, and Dielectric Constant [J].
Caleman, Carl ;
van Maaren, Paul J. ;
Hong, Minyan ;
Hub, Jochen S. ;
Costa, Luciano T. ;
van der Spoel, David .
JOURNAL OF CHEMICAL THEORY AND COMPUTATION, 2012, 8 (01) :61-74
[10]   The genetic algorithm based back propagation neural network for MMP prediction in CO2-EOR process [J].
Chen, Guangying ;
Fu, Kaiyun ;
Liang, Zhiwu ;
Sema, Teerawat ;
Li, Chen ;
Tontiwachwuthikul, Paitoon ;
Idem, Raphael .
FUEL, 2014, 126 :202-212