摘要
中低熟页岩油在我国资源量丰富,具有重要的开采价值。目前应用于中低熟页岩油开采的技术中,原位转化技术具有独特的优势,是未来中低熟页岩油开采重要的发展方向。在前人实验室实验和数值模拟计算的基础上,本文利用自主开发的新型多相流数值模拟器,针对布设的井网中具有代表性的区域建立地质模型,通过精细刻画原位转化过程中井周各相各组分的演化过程,进行定性与定量化的分析。模拟结果表明,原位转化中各组分的演化过程受到组分自身黏性、分解反应的临界温度、井间干扰等因素的影响。临界温度的差异与井间干扰会造成加热井周中组分的分层以及富集区的产生,黏性影响对应组分的生产量。本文基于新的数值模拟方法针对中低熟页岩油原位转化中各组分的演化过程进行定性、定量化研究,以期验证原位转化技术的可行性,并为实际的生产提供参考。
China possesses abundant shale oil resources,holding significant extraction value.Among the technologies applied in shale oil extraction,in-situ conversion technology stands out with unique advantages and represents a crucial direction for future development.Building upon previous laboratory experiments and numerical simulations,this study employs a newly developed multiphase flow numerical simulator.Focusing on representative regions within the well network layout,a geological numerical model is established to finely depict the evolution of each phase and component during the in-situ conversion process.The simulation results indicate that the evolution of each component during in-situ conversion is influenced by factors such as the component's viscosity,the critical temperature of decomposition reactions,and well-to-well interference.Differences in critical temperatures and well interference lead to stratification around heating wells and the formation of enrichment zones.Viscosity affects the production quantity of corresponding components.This study employs a novel numerical simulation method to qualitatively and quantitatively investigate the evolution of components during in-situ conversion of shale oil,aiming to validate the feasibility of in-situ conversion technology and provide guidance for practical production.
作者
张召彬
谢卓然
李宇轩
李守定
李晓
ZHANG Zhaobin;XIE Zhuoran;LI Yuxuan;LI Shouding;LI Xiao(Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,China Academy of Sciences,Beijing 100029,China;Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing 100029,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100029,China)
出处
《工程地质学报》
CSCD
北大核心
2024年第4期1367-1380,共14页
Journal of Engineering Geology
基金
国家自然科学基金项目(资助号:42090023)。
关键词
中低熟页岩油
原位转化
多相流耦合
数值模拟
Shale oil
In-situ conversion process
Multiphase flow coupling
Numerical simulation
作者简介
第一/通讯作者:张召彬(1986-),男,博士,副研究员,硕士生导师,主要从事工程地质力学数值模拟研究.E-mail:zhangzhaobin@mail.iggcas.ac.cn。
