Modeling of CO2-CH4-H2S-brine based on cubic EOS and fugacity-activity approach and their comparisons
文献类型：会议论文
| 作者 | Li, Jun1; Wei, Lingli2; Li, Xiaochun1
|
| 出版日期 | 2014 |
| 会议日期 | OCT 05-09, 2014 |
| 会议地点 | Austin, TX |
| 关键词 | CO2-CH4-H2S-brine model accuracy computation efficiency phi-gamma model phi-phi model |
| 卷号 | 63 |
| DOI | 10.1016/j.egypro.2014.11.390 |
| 页码 | 3598-3607 |
| 英文摘要 | The phase behavior of CO2-CH4-H2S-brine systems is of importance for geological storage of greenhouse gases (CCS) and enhanced oil recovery (EOR). In such projects, reservoir simulations play a major role in assisting decision makings, while modeling the phase behavior of the relevant CO2-CH4-H2S-brine system is a key part of the simulation. There is a need for an equation of state (EOS) for such system which is accurate, wide application range (pressure, temperature and aqueous salinity) computationally efficient and easy for implementation in a reservoir simulator. In this work, corresponding to the CO2-CH4-H2S-brine system, mutual solubility models are established by two different ways: (1) a cubic model based on the revision of the Soreide-Whitson EOS is used for fugacity calculation of both aqueous and non-aqueous phases (phi-phi model); (2) Peng-Robinson model is used for the fugacity calculation of non-aqueous phase and Pitzer activity model is used for the aqueous phase activity calculation (phi-gamma model). Both model can accurately reproduce the existing experimental data to high temperature (250 degrees C), high temperature (1000 bar for CO2 and CH4 solubility, and 200 bar for H2S), and high salinity (6 molal of NaCl in solutions). The phi-gamma model has slightly better accuracy. Computation efficiency of the two models is investigated. The.-model has obvious better computation efficiency, and can be a good choice for the implementation in numerical simulators. (C) 2014 The Authors. Published by Elsevier Ltd. |
| 会议录 | 12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
 |
| 会议录出版者 | ELSEVIER SCIENCE BV |
| 会议录出版地 | AMSTERDAM |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Energy & Fuels |
| WOS记录号 | WOS:000361211503078 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4827]  |
| 专题 | 岩土力学所知识全产出_会议论文 国家重点实验室知识产出_会议论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Shell China Innovat & R&D Ctr |
| 推荐引用方式 GB/T 7714 | Li, Jun,Wei, Lingli,Li, Xiaochun. Modeling of CO2-CH4-H2S-brine based on cubic EOS and fugacity-activity approach and their comparisons[C]. 见:. Austin, TX. OCT 05-09, 2014. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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