北京大学学报自然科学版 ›› 2023, Vol. 59 ›› Issue (5): 897-908.DOI: 10.13209/j.0479-8023.2023.063

上一篇    

分形理论表征非常规油气储层孔隙结构特征研究进展

张驰1, 关平1,†, 张济华1, 梁晓伟2,3, 丁晓楠1, 尤源2,3   

  1. 1. 造山带与地壳演化教育部重点实验室, 北京大学地球与空间科学学院, 北京 100871 2. 中国石油长庆油田分公司勘探开发研究院, 西安 710018 3. 低渗透油气田勘探开发国家工程实验室, 西安 710018
  • 收稿日期:2022-11-03 修回日期:2023-01-16 出版日期:2023-09-20 发布日期:2023-09-18
  • 通讯作者: 关平, E-mail: pguan(at)pku.edu.cn
  • 基金资助:
    国家重点研发计划(2021YFA0719000)资助

A Review of the Progress on Fractal Theory to Characterize the Pore Structure of Unconventional Oil and Gas Reservoirs

ZHANG Chi1, GUAN Ping1,†, ZHANG Jihua1, LIANG Xiaowei2,3, DING Xiaonan1, YOU Yuan2,3   

  1. 1. Key Laboratory of Orogenic Belts and Crustal Evolution (MOE), School of Earth and Space Sciences, Peking University, Beijing 100871 2. Institute of Petroleum Exploration and Development, Changqing Oil field Branch Company, Xi’an 710018 3. National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Xi’an 710018
  • Received:2022-11-03 Revised:2023-01-16 Online:2023-09-20 Published:2023-09-18
  • Contact: GUAN Ping, E-mail: pguan(at)pku.edu.cn

摘要:

围绕单重分形和多重分形在非常规油气储层研究中的应用问题, 总结分形理论在定量表征、数字图像和联合多种方法表征全尺度孔隙特征等方面的应用研究成果, 指出现有研究中存在4个方面的不足: 1) 缺乏联合多种实验方法表征全尺度分形几何特征的方法学研究; 2) 缺乏不同分形维数计算模型的适用性研究; 3) 缺乏针对分段的分形孔径控制因素研究; 4) 缺乏应用分形理论对蕴含多类型资源储层的非均质差异性研究。提出分形理论在非常规油气储层研究中应用的发展方向: 一方面, 应加强分形维数计算模型的方法学和适用性研究, 厘清分段分形孔径变化的控制因素; 另一方面, 应围绕油气生成与分形维数变化的动态耦合关系开展深入的探讨, 加强多重分形理论在非常规油气储层中的应用研究。

关键词: 非常规油气储层, 分形, 孔隙结构, 非均质性

Abstract:

Focusing on the application of monofractal and multifractal theory in unconventional reservoir research, the research results on the application of fractal theory in quantitative characterization techniques, digital image techniques and techniques for joint multi-method characterization of full-scale pore structure are reviewed. There are four weaknesses in the existing research results: 1) lack of methodological research on joint multi-method for full-scale fractal geometric characteristics; 2) lack of research on the applicability of different fractal dimension calculation models; 3) lack of research on the control factors of segmental fractal pore size; 4) lack of research on the heterogeneity differences of reservoirs containing multiple types of resources by applying fractal theory. The development direction of the application of fractal theory in unconventional oil and gas reservoirs is proposed. On the one hand, the methodological and applicability research of fractal dimension calculation models should be strengthened, and the controlling factors of segmental fractal pore size should be clarified; on the other hand, more in-depth research should be conducted on the dynamic coupling relationship between hydrocarbon generation and fractal dimension change, and the further application of multiple fractal theory in the study of unconventional reservoirs should be strengthened.

Key words: unconventional oil and gas reservoirs, fractal, pore structure, inhomogeneous