油气藏评价与开发 ›› 2018, Vol. 8 ›› Issue (1): 12-15.

• 油气地质 • 上一篇    下一篇

基于聚类分析和灰色关联分析法的储层综合评价——以鄂尔多斯盆地姬塬地区长61储层为例

吴育平1,孙卫1,魏驰2,吕可3   

  1. 1. 西北大学地质学系大陆动力学国家重点实验室,陕西 西安 710069
    2. 西安石油大学地球科学与工程学院,陕西 西安 710065
    3. 中国石油长庆油田分公司第八采油厂,陕西 西安 710018
  • 收稿日期:2017-05-09 出版日期:2018-02-26 发布日期:2018-12-05
  • 作者简介:吴育平(1993—),男,在读硕士研究生,油气田开发地质和储层地质学研究。

Reservoir comprehensive evaluation based on cluster analysis and gray correlative analytical method: A case study in Chang-61 formation of Jiyuan area in Ordos Basin

Wu Yuping1,Sun Wei1,Wei Chi2,Lyu Ke3   

  1. 1. State Key Laboratory of Continental Dynamic, Department of Geology, Northwest University, Xi’an, Shaanxi 710069, China;
    2. Scool of Earth Science and Engineering, Xi’an Shiyou University, Xi’an, Shaanxi 710065, China;
    3. No.8 Oil Production Plant of Changqi Oilfield Branch, Xi’an, Shaanxi 710018, China;
  • Received:2017-05-09 Online:2018-02-26 Published:2018-12-05

摘要:

结合聚类分析和灰色关联分析法对姬塬地区长61储层进行综合评价。通过谱系聚类从众多参数中选择出相对独立的评价参数,利用灰色关联分析法求取各评价参数的权系数,进而获得该区储层评价的综合评价指标REI。根据REI值的大小,将研究区储层分为四类。结合沉积相图,发现优质储层都处于主河道中央部位,表明该区储层特征与沉积环境有密切联系。同时表明,聚类分析和灰色关联分析法的有效结合可以提供一种新的方法进行储层评价,其结果具有较高的可信度。

关键词: 聚类分析, 灰色关联, 储层评价, 姬塬地区

Abstract:

In order to comprehensively evaluate the Chang-61 formation in Jiyuan area, we combined the cluster analysis with the gray correlative analytical method, selected the relative independent evaluation parameters from a number of parameters by hierarchic cluster analysis, and get the weight coefficient of every evaluation parameter by the gray correlative analytical method, and then obtained the comprehensive evaluation index REI. According to the value of REI, the reservoir is divided into four categories. And combined with the sedimentary facies, it is found that the high quality reservoir is in the central part of the main channel, indicating that the reservoir characteristics are closely related to the sedimentary environment. It is also shown that the combination of the cluster analysis and the gray correlative analytical method provides a new way for the reservoir evaluation, and the result has higher credibility.

Key words: cluster analysis, gray correlation, reservoir evaluation, Jiyuan area

中图分类号: 

  • TE122