石油勘探与开发 >

2019 , Vol. 46 >Issue 5: 943 - 949

DOI: https://doi.org/10.11698/PED.2019.05.13

油气田开发

复杂多孔介质主流通道定量判识标准

  • 李熙喆 ,
  • 卢德唐 ,
  • 罗瑞兰 ,
  • 孙玉平 ,
  • 沈伟军 ,
  • 胡勇 ,
  • 刘晓华 ,
  • 齐亚东 ,
  • 关春晓 ,
  • 郭辉
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  • 1. 中国石油勘探开发研究院,河北廊坊 065007;
    2. 中国科学技术大学工程科学学院,合肥 230026;
    3. 中国科学院力学研究所,北京 100190
李熙喆（1966-）,男,河北唐山人,博士,中国石油勘探开发研究院教授级高级工程师,现从事天然气开发综合研究工作。地址：河北省廊坊市44号信箱,中国石油勘探开发研究院,邮政编码：065007。E-mail: lxz69@petrochina.com.cn

收稿日期: 2019-04-06

  修回日期: 2019-07-30

  网络出版日期: 2019-09-17

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Quantitative criteria for identifying main flow channels in complex porous media

  • LI Xizhe ,
  • LU Detang ,
  • LUO Ruilan ,
  • SUN Yuping ,
  • SHEN Weijun ,
  • HU Yong ,
  • LIU Xiaohua ,
  • QI Yadong ,
  • GUAN Chunxiao ,
  • GUO Hui
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  • 1. PetroChina Research Institute of Petroleum Exploration & Development, Langfang 065007, China;
    2. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China;
    3. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

Received date: 2019-04-06

  Revised date: 2019-07-30

  Online published: 2019-09-17

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摘要

为判识油气储集层中复杂多孔介质的主流通道类型,利用试井解释获取的综合渗透率与岩心测试（或测井解释）得到的基质渗透率的比值定义了“主流通道指数”,同时基于流量等效原理建立了相应的数学模型,提出了主流通道分类方法,实现了储集层流动通道类型的定量表征,并通过典型气藏实例分析验证了该方法的有效性。研究表明,“主流通道指数”能够定量划分流动通道类型：该指数小于3,基质孔隙为主要流动通道;该指数为3~20,流动通道以裂缝为主、基质孔隙为辅;该指数大于20可视裂缝为唯一渗流通道。典型气藏的动态分析显示,“主流通道指数”可用于评价多孔介质流动通道类型,进而指导气藏分类开发、规避气藏开发风险。图10参29

关键词： 多孔介质; 基质孔隙; 裂缝; 流动通道; 主流通道指数; 定量判识标准

本文引用格式

李熙喆 , 卢德唐 , 罗瑞兰 , 孙玉平 , 沈伟军 , 胡勇 , 刘晓华 , 齐亚东 , 关春晓 , 郭辉 . 复杂多孔介质主流通道定量判识标准[J]. 石油勘探与开发, 2019 , 46(5) : 943 -949 . DOI: 10.11698/PED.2019.05.13

Abstract

To identify the type of main flow channels of complex porous media in oil and gas reservoirs, the “main flow channel index” is defined as the ratio of comprehensive permeability obtained from well test to matrix permeability obtained from core analysis or well logging. Meanwhile, a mathematical model is established based on equivalent flow assumption, the classification method for main flow channels is put forward, and quantitative characterization of main flow channels is realized. The method has been verified by analysis of typical gas reservoirs. The study results show that the “main flow channel index” can quantitatively classify types of flow channels. If the index is less than 3, the matrix pore is the main flow channel; if the index is between 3 and 20, the fracture is the main flow channel and the matrix pore acts as the supplement one; if the index is more than 20, the fracture is the only seepage channel. The dynamic analysis of typical gas reservoirs shows that the “main flow channel index” can be used to identify the type of flow channel in complex porous media, guiding the classified development of gas reservoirs, and avoiding development risk.

Key words： porous media; matrix pore; fracture; flow channels; main flow channel index; quantitative identification criteria

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