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

发布时间：2018-09-03 11:19

【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致密油储层物性、含油性、脆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Ⅰ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。
[Abstract]:In order to make clear the characteristics of Chang7 tight oil reservoir, comprehensive evaluation was carried out. Firstly, through core observation, thin section identification and core analysis, it is considered that the physical properties, oil content and brittleness of Chang7 tight oil reservoir have the characteristics of distributed frequency bandwidth and fast change. Secondly, based on the clustering analysis method, seven relatively independent parameters are selected for reservoir classification evaluation, and the classification criteria of the corresponding parameters are defined. On this basis, the comprehensive evaluation factors of reservoir are calculated by using the grey system theory and the weight coefficients of each evaluation parameter, and the comprehensive quantitative evaluation of Chang721 tight oil reservoir in the west 233 well in the north of Zhenbei area is carried out. The results show that the type 鈪，

本文编号：2219829