2017年8月第36卷第4期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
D0I:10.19597/J.ISSN.1000-3754.201610054
鄂尔多斯盆地镇北地区延长组
长7致密油储层特征及其综合评价
孙兵’刘立峰丁江辉
（1.中国石油勘探开发研究院，北京100083；2.中国地质大学能源学院，北京100083）
Aug:，2017 Vol. 36 No. 4
摘要：为了明确长7致密油储层特征对其开展综合评价。首先，通过岩心观察、薄片鉴定和岩心分析等，认为长 7致密储层物性、含油性、隐性等属性参数具有分布频带宽、变化快的特征。其次，基于聚类分析方法，选取 7个相对独立的参数用于储层分级评价，并界定了相应参数的分级标准。在此基础上，运用灰色系统理论，定量各评价参数的权系数，计算出储层综合评价因子，对镇北地区西233井区长721致密油储层开展综合定量评价。结果表明：西233井区以Ⅱ、Ⅲ类储层为主，两者分布面积约为65%，其中类、Ⅱ类储层主要分布于三角洲前缘水下分流河道，Ⅲ、IV类储层分布于河道砂体侧翼。
关键词：鄂尔多斯盆地；镇北地区；储层特征；灰色系统；储层综合评价；长7致密油
文章编号：1000-3754（2017）04-0147-06
中图分类号：TE122.2
文献标识码：A
CHARACTERISTICS AND COMPREHENSIVEEVALUATIONOF CHANG-7TIGHTOILRESERVOIRSINZHENBEIYANCHANG
FORMATIONOFORDOSBASIN SUN Bing',LIU Lifeng',DING Jianghui
(1.PetroChina Research Institute of Petroleum Exploration &Derelopment，Beijing 100083,China;
2. School of Energy Resources, China University of Geosciences, Bejing 100083, China)
Abstract : In order to define the characteristics of Chang-7 Formation tight oil reservoirs, the comprehensive evalu ation of the reservoirs were carried out. Firstly, with the help of the core observation, thin section identification, core analysis, etc., the following conclusions were drawn: the reservoir attribute parameters such as physical prop-erties, oiliness and brittle abilities and so on possess the following characteristics: wider distribution frequency band and faster change. Secondly, based on the cluster analyzing method, 7 relatively independent parameters are select-ed to classify and evaluate the reservoirs and determine the grading criteria of the corresponding parameters. On the basis of the above, the grey system theory was applied to quantify the weight coefficients of each evaluating parame-ter and calculate the comprehensive evaluation factors of the reservoirs, and furthermore the quantitative evaluation was performed for Chang-721 tight oil reservoirs in Well Block Xi233 of Zhenbei area. The achievements show that Type II and II reservoirs are dominant in the block, the distribution areas of the both are about 56%, Type I and
收稿日期：2016-10-26
改回日期：2017-02-13
（20-100200900910），作者简介：孙兵，男，1990年生，在读硕士，主要从事油气田开发地质方面研究。
E-mail:1074695807@qq.com
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