分子动力学研究CO2和原油在通过CO2洪水产生的流体中的扩散质量转移行为
Shuang Wang1, Qinglin Cheng1, Zhidong Li1
1Key Laboratory of Ministry of Education for Enhancing the Oil and Gas Recovery Ratio, Northeast Petroleum University, Daqing 163318, China.
Molecules (Basel, Switzerland)
|December 23, 2023
概括
二氧化碳泛滥增强了石油回收,减少了排放. 分子动力学显示,原油中的二氧化碳扩散受温度,油气比率和含水量的影响,这对于安全运输至关重要.
科学领域:
- 石油工程是石油工程中的一个.
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 二氧化碳 (CO2) 泛滥对于提高石油回收 (EOR) 和减轻温室气体排放至关重要.
- 二氧化碳注入会产生复杂的多相流体,改变原油的特性,增加运营风险.
- 了解CO2原油质量转移对于安全收集和运输至关重要.
研究的目的:
- 研究二氧化碳和原油在二氧化碳泛滥产生的流体中的微观扩散质量转移机制.
- 分析温度,油气比率和含水量对二氧化碳扩散的影响.
- 为优化EOR流程和确保安全的石油和天然气运营提供见解.
主要方法:
- 利用分子动力学模拟来建模扩散和质量转移过程.
- 在油水系统中分析了二氧化碳分子的分布和动态行为.
- 系统地改变温度,油气比率和含水量,以评估其影响.
主要成果:
- 二氧化碳分子优先聚集在油水界面,并更容易扩散到油相.
- 高温和含水量阻碍了二氧化碳在原油中的扩散.
- 增加的油气比率促进了系统内二氧化碳的扩散质量转移.
结论:
- 该研究阐明了在洪水条件下原油中二氧化碳的扩散质量转移机制.
- 这些发现突出了水相和运行参数对二氧化碳扩散的重要作用.
- 结果为提高石油和天然气采集和运输的安全性和效率提供了实际指导.
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