西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (3): 5-7.DOI: 10.3863/j.issn.1000-2634.2002.03.002

• 地质勘探 • 上一篇    下一篇

孔喉体积定量预测新方法

何琰1 杨春梅2 殷军3 颜俊华3
  

  1. (1.西南石油学院石油工程学院,四川南充637001; 2.河南中原电子计算站; 3.四川石油地调处)
  • 收稿日期:2001-08-21 修回日期:1900-01-01 出版日期:2002-06-30 发布日期:2002-06-30
  • 通讯作者: 何琰

A NEW METHOD FOR MEASURING THE QUANTITATIVE PORE THROT VOLUME

HE Yan1 YANG Chun-mei2 YIN Jun3 et al.


  

  1. ( Southwest Petroleum Institute, Nanchong Sichuan 637001, China)
  • Received:2001-08-21 Revised:1900-01-01 Online:2002-06-30 Published:2002-06-30
  • Contact: HE Yan

摘要: 压汞数据估算的孔喉大小能评价圈闭的封闭能力和解释地层烃类聚集的有利部位,是储层研究中的一个重要参数。但是,压汞测试昂贵,因而一个地区这种资料少,而常规岩心分析资料如孔隙度和渗透率数据往往比压汞测试资料丰富得多。是否可以根据岩样的孔隙度和渗透率的大小反演岩样的孔喉体积分布,或者反演毛管压力曲线?利用分形几何学的原理和方法,实现了利用常规岩心分析资料如孔隙度和渗透率等反演毛管压力曲线,建立孔喉体积分布预测模型,为非取心井段的孔隙结构研究开辟了新途径。通过实际资料验证,该方法预测结果精度较高。

关键词: 孔隙度, 渗透率, 孔喉分布, 毛管压力曲线, 分形几何学

Abstract: The predicted pore throat volume by the capillary pressure data is a key parameter and can be used to evaluate the shutoff of trap and the favorable area of hydrocarbon accumulation. But it is not easy to acquire the capillary pressure data, and it is easy to acquire the porosity and permeability data by common core analysis. So if we can inverse the distribution of pore throat or
the capillary pressure curve by the pore and permeability data of the core? Based on the fractal geometry, the capillary pressure curve of inversion is acquired by the porosity and permeability data, and the model for estimating the distribution of pore throat is set up. It opens up a new way for the study of pore structure in non-cored formation. The practical data verifies the
validity of this method.

Key words: porosity, permeability, distribution of pore throat, capillary pressure curve, fractal geometry

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