石油与天然气地质 ›› 2021, Vol. 42 ›› Issue (4): 919-930.doi: 10.11743/ogg20210413

• 油气地质 • 上一篇    下一篇

分子模拟在油气地球化学中的应用研究进展

李美俊1,2,3,4(), 刘晓强5, 韩秋雅4, 肖洪4, 方镕慧6, 何大祥7, 高志伟4   

  1. 1. 页岩油气富集机理与有效开发国家重点实验室, 北京 102206
    2. 中国石化油气成藏重点实验室, 江苏 无锡 214126
    3. 中国石化 石油勘探开发研究院 无锡石油地质研究所, 江苏 无锡 214216
    4. 中国石油大学(北京) 地球科学学院, 北京 102249
    5. 四川轻化工大学 化学与环境工程学院, 四川 自贡 643000
    6. 中国地质调查局非常规油气地质重点实验室, 北京 100083
    7. 长江大学 油气资源与勘探技术教育部重点实验室, 湖北 武汉 430100
  • 收稿日期:2020-03-02 出版日期:2021-08-28 发布日期:2021-08-27
  • 作者简介:李美俊(1972-), 男, 博士、教授、博士生导师, 油气地球化学与石油地质学。E-mail: meijunli@cup.edu.cn
  • 基金资助:
    页岩油气富集机理与有效开发国家重点实验室开放基金项目(33550007-21-ZC0613-0016)

Progress of molecular simulation application research in petroleum geochemistry

Meijun Li1,2,3,4(), Xiaoqiang Liu5, Qiuya Han4, Hong Xiao4, Ronghui Fang6, Daxiang He7, Zhiwei Gao4   

  1. 1. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China
    2. Key Laboratory of Petroleum Accumulation Mechanisms, SINOPEC, Wuxi, Jiangsu 214126, China
    3. Wuxi Research Institute of Petroleum Geology, Petroleum Exploration and Production Research Institute, SINOPEC, Wuxi, Jiangsu 214216, China
    4. College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China
    5. College of Chemistry and Environment, Sichuan University of Science&Engineering, Zigong, Sichuan 643000, China
    6. Key Laboratory of Unconventional Oil and Gas Geology, CGS, Beijing 100083, China
    7. Key Laboratory of Exploration Technologies for Oil and Gas Resources (Yangtze University), Ministry of Education, Wuhan, Hubei 430100, China
  • Received:2020-03-02 Online:2021-08-28 Published:2021-08-27

摘要:

分子模拟采用计算机模拟技术测定分子微观结构、计算体系宏观性质,可以直观再现基于分子和原子水平的不同分子之间的相互作用及化学反应过程,具有研究变量可控、效率高、周期短和安全性高等优点,现已逐渐应用于油气地球化学研究领域。系统总结了分子模拟技术在煤层气吸附机理、页岩气和页岩油吸附、有机质热成熟度评价分子地球化学指标构建、石油运移方向示踪分子地球化学指标建立、有机质生烃及油藏中原油裂解机理等主要领域的研究进展。分子模拟技术具有广阔的应用前景,将在页岩油气等非常规油气勘探、深层-超深层有机质生烃机理、油气运移和成藏等研究领域发挥越来越重要的作用。

关键词: 密度泛函理论, 成熟度指标, 生烃机理, 油气运移, 页岩气, 分子动力学模拟, 分子模拟, 油气地球化学

Abstract:

Molecular simulation measures molecular microstructures and calculate macroscopic properties of a given system by using computer modelling technology.It can directly reproduce intermolecular interaction and chemical reaction processes on molecular or even atomic level and is characterized by variable controllability, high operation efficiency, short research cycle, high safety, and so on.The technique has been applied in petroleum geochemistry.This study briefly summarizes the application and progress of molecular simulation in the following aspects: (1) the adsorption behavior of coalbed methane, (2) the adsorption of shale gas and shale oil, (3) the construction of molecular indicators assessing maturity of organic matters, (4) the establishment of molecular markers tracing subsurface petroleum migration orientations; and (5) the mechanisms for hydrocarbon generation and oil cracking in reservoirs.The molecular simulation technique has profound application prospects, and is playing a role of ever-growing significance, particularly in unconventional petroleum exploration and research of hydrocarbon generation mechanism and petroleum migration and accumulation in deep and ultra-deep reservoirs.

Key words: density functional theory (DFT), maturity indicator, hydrocarbon generation mechanism, hydrocarbon migration, shale gas, molecular dynamics(MD) simulation, molecular simulation, petroleum geochemistry

中图分类号: