西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (2): 95-98.

• 地质勘探 • 上一篇    下一篇

应力敏感储层相对渗透率计算方法研究

邓勇1, 2 彭光明2   

  1. 1. 西南石油大学石油工程学院,四川 成都 610500 2. 中国石化西南油气分公司勘探开发研究院,四川 成都 610081
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-20 发布日期:2011-04-20

A CALCULATION METHOD FOR RELATIVE PERMEABILITY CURVE OF STRESS SEN-SITIVE

DENG Yong 1,2 PENG Guang-ming 2   

  1. 1. School of Petroleum Engineering, Southwest Petroleum University, Cheng-du, Sichuan 610500 China 2. The Research Institute of Exploration & Development, Southwest Oil and Gas Field Company, SINOPEC, Chengdu, Sichuan 610081 China)Journal of Southwest Petroleum University, Vol. 33,No. 2, 95 – 98, 2011(1674 – 5086,in Chinese)
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-20 Published:2011-04-20

摘要: 对于存在应力敏感的储层,地层压力的变化造成孔隙度及渗透率的降低,影响流体渗流规律及特征,导致相对渗透率曲线形态发生变化。孔隙网络技术是计算相对渗透率的有效手段。在该技术的基础上,考虑储层应力敏感,建立孔隙微观结构特征参数动态模型,计算地层压力变化下的相对渗透率,研究相对渗透率曲线的动态变化规律,并拟合实验数据,拟合精度在误差范围之内,拟合结果良好。结果表明:该方法能用于计算应力敏感储层相对渗透率,为油气藏工程及数值模拟研究提供必要参数。

关键词: 应力敏感, 相对渗透率, 孔隙网络, 微观结构特征参数, 动态变化, 实验

Abstract: For the stress sensitive reservoir, the change of reservoir pressure can result in the decline of porosity and permeability and affect the flow feature and rule, so the relative permeability curves’ shape will change. The prerequisite of reservoir engineering research is to obtain the relative permeability curves under different reservoir pressure. The pore network technology is one of the effective methods to predict and calculate relative permeability.Based on the technology and considering the stress sensitivity, the dynamic models of pore’s microscopic structure characteristic parameters are established, the variation of relative permeability curves under the change of reservoir
pressure is calculated and the experiment data is fitted. It is verified that the method can be used for the calculation of relative permeability for the stress sensitive reservoir, and the necessary parameter can be given for the study of
reservoir engineering.

Key words: stress sensitivity, relative permeability, pore network, characteristic parameter of microscopic structure, dynamic change, experiment

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