西南石油大学学报(自然科学版) ›› 2021, Vol. 43 ›› Issue (5): 113-136.DOI: 10.11885/j.issn.1674-5086.2021.02.25.01

• 非常规油气开发专刊 • 上一篇    下一篇

致密油藏渗流规律及数学模型研究进展

曹仁义, 程林松, 杜旭林, 时俊杰, 杨晨旭   

  1. 中国石油大学(北京)石油工程学院, 北京 昌平 102249
  • 收稿日期:2021-02-25 发布日期:2021-11-05
  • 通讯作者: 程林松,E-mail:lscheng@cup.edu.cn
  • 作者简介:曹仁义,1981年生,男,汉族,山东潍坊人,教授,博士生导师,主要从事油气渗流理论方面的研究工作。E-mail:caorenyi@126.com
    程林松,1965年生,男,汉族,湖北孝感人,教授,博士生导师,主要从事油气渗流理论方面的研究工作。E-mail:lscheng@cup.edu.cn
    杜旭林,1992年生,男,满族,河北保定人,博士研究生,主要从事非常规油气渗流理论及数值模拟方面的研究工作。E-mail:duxulin_cup@foxmail.com
    时俊杰,1995年生,男,汉族,山东泰安人,博士研究生,主要从事裂缝性储层传质传热表征及数值模拟方面的研究工作。E-mail:996757751@qq.com
    杨晨旭,1995年生,男,汉族,辽宁盘锦人,博士研究生,主要从事油气田开发工程渗流理论及数值模拟方面的研究工作。E-mail:522216016@qq.com
  • 基金资助:
    国家自然科学基金重点支持项目(U1762210);国家自然科学基金面上项目(51774297);中国石油科技项目(ZLZX2020-02-04)

Research Progress on Fluids Flow Mechanism and Mathematical Model in Tight Oil Reservoirs

CAO Renyi, CHENG Linsong, DU Xulin, SHI Junjie, YANG Chenxu   

  1. College of Petroleum Engineering, China University of Petroleum, Changping, Beijing 102249, China
  • Received:2021-02-25 Published:2021-11-05

摘要: 中国致密油藏资源潜力大、分布广,现阶段已成为中国长庆、大庆、新疆和吉林等油田稳产、上产的重要保障,也是全球油气开发的热点和难点。致密储层岩石致密,孔隙度和渗透率极低,其主流喉道为亚微米,微尺度流动效应的影响显著,传统的油气渗流理论已无法准确描述此类油藏的流动规律,且开发过程中表现出原油流动困难、驱替难度大、动用程度低等开发难点,通常采用水平井和大规模体积压裂的井工厂模式实现致密油藏的高效开发。针对致密油藏渗流规律及数学模型,阐述了致密油藏渗流理论的最新研究进展,包括微纳米孔喉流动机理及数学模型、致密油藏应力敏感及数学模型、致密油藏非线性运动方程、孔隙网络模型、非线性渗流规律和致密基质裂缝耦合模型及流动规律,并针对各个前沿关键科学问题总结了其发展趋势,对致密油藏的科学高效开发具有重要的理论意义。

关键词: 致密油藏, 微纳米尺度, 边界层, 非线性渗流, 孔隙网络模拟

Abstract: Tight oil reservoirs have great potential and wide distribution in China. Nowadays it has become an important guarantee for stable and high production of Changqing, Daqing, Xinjiang and Jilin oilfields in China, and it is also the hotspot and difficulty of global oil and gas development. Tight matrix is characterized by tight rock and its porosity and permeability are very low. The influence of micro-scale flow effect is significant due to its submicron main throat. The traditional fluids flow theory of oil and gas cannot accurately describe the flow law of this kind of reservoir. The exploitation of such reservoirs is accomparied by the difficulties in oil flow and flooding and low production. Generally, horizontal well and hydraulic fracturing are used to realize efficient development of tight oil reservoir. This paper expounds the latest research progress of fluids flow mechanism and mathematical models of tight oil reservoir:flow mechanism and mathematical model of micro-nano pore and throat; stress sensitivity and mathematical model of tight oil reservoir; nonlinear mathematical model for tight oil reservoir; pore network simulation and nonlinear flow law; coupled flow between tight matrix and fracture. We summarize the development trend of these key scientific problems, which has important theoretical significance for the scientific and efficient development of tight oil reservoirs.

Key words: tight oil reservoir, micro-nano scale, boundary layer, nonlinear flow, pore network simulation

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