新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (6): 607-609.

• 油藏工程 • 上一篇    下一篇

各向异性低渗透油藏整体压裂后的压力计算单元

程远方   

  1. 中国石油大学 石油工程学院,山东 东营 257061
  • 收稿日期:2010-05-17 发布日期:2021-01-18
  • 作者简介:程远方(1964-),男,黑龙江集贤人,教授,博士生导师,岩石力学,(Tel)15266197230(E-mail)yizhong_zhao@126.com.
  • 基金资助:
    国家863计划项目(2007AA06Z208)

Pressure Calculation Element Selection Following Overall Hydraulic Fracturing in Anisotropy Low Permeability Reservoirs

CHENG Yuan-fang   

  1. College of Petroleum Engineering, China University of Petroleum, Dongying, Shandong 257061, China
  • Received:2010-05-17 Published:2021-01-18

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摘要： 基于广义达西定律建立了各向异性低渗透油藏油水两相渗流方程,模拟研究了储集层各向异性对整体压裂后压力计算单元选取的影响,研究发现常规单元选取方法误差较大。在考虑渗透率各向异性及人工裂缝任意转角等因素的基础上,提出了五点、九点、反九点井网整体压裂后压力计算单元的选取方法,模拟表明,计算单元选取合理,单元内重点分析井计算精度高,为指导复杂的各向异性低渗透油藏整体压裂措施提供了重要的理论依据。

关键词: 低渗透油藏, 各向异性, 压裂, 计算单元, 模拟

Abstract: The oil and water two-phase flow equation is established based on generalized Darcy's law, with which the effect of permeability anisotropy on the pressure calculation element selection after whole hydraulic fracturing is simulated and it is found that obvious errors may exist by conventional element selection method. Considering the formation permeability anisotropy and artificial fracture arbitrary angles, etc., a new method for such a selection suitable for five-spot, nine-spot and inverted nine-spot well patterns is proposed. The simulation indicates that calculation element selection is reasonable and the important analyzing wells within the element are of high calculating accuracy, which provides theoretic reference for complex anisotropy low permeability reservoir development by whole hydraulic fracturing process.

Key words: low permeability reservoir, anisotropy, hydraulic fracturing, calculation element, simulation

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