西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (4): 90-103.DOI: 10.11885/j.issn.16745086.2016.06.25.03

• 石油与天然气工程 • 上一篇    下一篇

低渗透油藏储层多尺度裂缝的建模方法研究

刘建军1,2,3, 吴明洋2, 宋睿1,2, 黄刘科2, 戴小军2   

  1. 1. "油气藏地质及开发工程"国家重点实验室·西南石油大学, 四川 成都 610500;
    2. 西南石油大学地球科学与技术学院, 四川 成都 610500;
    3. 武汉轻工大学多孔介质力学研究所, 湖北 武汉 430023
  • 收稿日期:2016-06-25 修回日期:2017-06-23 出版日期:2017-08-01 发布日期:2017-08-01
  • 通讯作者: 刘建军,E-mail:liujj0906@163.com
  • 作者简介:刘建军,1972年生,男,汉族,河南襄城人,教授,博士生导师,主要从事油气藏渗流理论及工程应用方面的研究。E-mail:liujj0906@163.com;吴明洋,1992年生,男,汉族,四川绵阳人,硕士研究生,主要从事裂缝建模方面的研究。E-mail:603364975@qq.com;宋睿,1987年生,男,汉族,河南唐河人,讲师,博士,主要从事多物理场耦合研究。E-mail:songrui0506@126.com;黄刘科,1989年生,男,汉族,四川广安人,博士研究生,主要从事裂纹扩展和流固耦合方面的研究。E-mail:swpuhlk@126.com;戴小军,1981年生,男,汉,江苏泰州人,讲师,硕士,主要从事三维地质建模及变形监测数据处理等方面的研究。E-mail:79892003@qq.com
  • 基金资助:
    国家科技重大专项(2017ZX05013006)

Study on Simulation Method of Multi-scale Fractures in Low Permeability Reservoirs

LIU Jianjun1,2,3, WU Mingyang2, SONG Rui1,2, HUANG Liuke2, DAI Xiaojun2   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    3. Institute of Poromechanics, Wuhan Polytechnic University, Wuhan, Hubei 430023, China
  • Received:2016-06-25 Revised:2017-06-23 Online:2017-08-01 Published:2017-08-01

摘要: 低渗透油藏储层中流体的流动是一个横跨致密基质、天然裂缝、水压裂缝、井筒的典型多尺度力学行为。明确油藏储层中裂缝的尺度分级,建立精确的低渗透储层多尺度裂缝模型,探究多尺度之间的级联耦合作用过程和内在联系,是低渗透油藏渗流研究的关键,也是实现超低渗透油藏有效开发的重要理论基础。根据复杂学科的多尺度关联方法及油藏多尺度裂缝建模的相关文献资料,明确提出了油藏中多尺度裂缝的尺度分级标准,总结归纳了多尺度关联方法和低渗透油藏储层多尺度裂缝模型,分析了按连续介质思想和离散介质思想构建的几种代表模型的优劣。在此基础上,提出了储层裂缝多尺度建模的建议,并指出了低渗透油藏多尺度裂缝建模研究的趋势。

关键词: 低渗透油藏, 多尺度裂缝, 数学模型, 多尺度关联, 表征方法

Abstract: The flow of fluids in low permeability reservoirs displays typical multi-scale mechanical behavior across dense matrices, natural fractures, hydraulic fractures, and wellbores. Studying the classification of the scale of fractures in reservoirs, establishing an accurate multi-scale fracture model in low permeability reservoirs, and exploring the cascade coupling process and internal correlations between multi-scales are the keys to the study of seepage flow in low permeability reservoirs and provide an important theoretical basis for effective recovery from low permeability reservoirs. Based on the multi-scale correlation method of complex disciplines and the relevant literature on multi-scale fracturing modeling of reservoirs, the scale classification criteria of multi-scale fractures in reservoirs are proposed. In addition, the multi-scale correlation method and multi-scale fracture model in low permeability reservoirs are summarized. The advantages and disadvantages of several representative models constructed from a continuous media perspective and a discrete media perspective were analyzed. Based on the study's results, recommendations for constructing the multi-scale model of reservoir fractures are proposed and the research trend of multi-scale fracture modeling in low permeability reservoirs is pointed out.

Key words: low permeability reservoir, multi-scale fractures, mathematical model, multi-scale correlation, characterization method

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