石油与天然气地质 ›› 2007, Vol. 28 ›› Issue (4): 528-534.doi: 10.11743/ogg20070415

• 开发地质技术 • 上一篇    下一篇

边界元理论在缝洞型非均质油藏渗流研究中的应用

张烈辉1, 李成勇2, 刘启国1, 李允1   

  1. 1. 西南石油大学, "油气藏地质及开发工程"国家重点实验室, 四川, 成都, 610500;
    2. 成都理工大学, 能源学院, 四川, 成都, 610500
  • 收稿日期:2007-06-08 出版日期:2007-08-25 发布日期:2012-01-16
  • 基金项目:

    高等学校优秀青年教师科研奖励计划、教育部博士点基金课题(20040615004)联合资助.

Application of boundary element theory to the study of percolation in heterogeneous fractured-vuggy reservoirs

Zhang Liehui1, Li Chengyong2, Liu qiguo1, Li Yun1   

  1. 1. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500;
    2. Chengdu University of Technology, Chengdu, Sichuan 610500
  • Received:2007-06-08 Online:2007-08-25 Published:2012-01-16

摘要:

从渗流力学基本理论出发,建立了缝洞型非均质油藏直井渗流数学模型。采用Lord Kelvin点源解、贝塞尔函数积分和泊松叠加公式等方法求解出了缝洞型非均质油藏直井渗流的边界元基本解,建立起了缝洞型非均质油藏直井井底压力响应边界元解模型。通过理论计算得到了无因次压力和压力导数与无因次时间双对数理论图版,并详细分析了井在内区高渗带不同位置和高渗带位于油藏不同方位等情形对井底压力动态的影响。

关键词: 边界元, 非均质油藏, 缝洞型油藏

Abstract:

A mathematic model for describing percolation in vertical well in heterogeneous fractured-vuggy reservoirs was built based on fluid flow mechanics in porous medium.By using Lord Kelvin point source solution,Bassel integration and superimpose formula,boundary element fundamental solutions(BEFS) are derived for percolation in vertical wells in heterogeous fractured-vuggy reservoirs and a BEFS model of bottom hole pressure in vertical wells in heterogeneous fractured-vuggy reservoirs is also established.Log-log type curves of dimensionless pressures and pressure derivatives vs.dimensionless time are plotted through theoretical calculation;and the effects of wells located in different areas of high-permeability zones and high-permeability zones located in different parts of the reservoirs upon the bottom hole pressure behaviors are analyzed in detail.

Key words: boundary element, heterogeneity, fractured-vuggy reservoir

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