摘要
以江苏省扬州市真武油田戴南组二段碎屑岩储层为研究对象,利用数据包络分析法计算非均质指数定量刻画储层非均质性。以各小层作为表征单元,以全区井各小层储层属性参数构成评价群体以确定数学模型,并考虑影响储层非均质性的8个参数进行线性规划模型求解。研究结果表明：真武油田戴南组二段砂岩分布范围内非均质指数主要分布在0.5-0.9之间,呈现中等—较强的非均质性,且非均质指数的分布与沉积微相展布有较好的相关性;非均质指数对注水开发效果有直接影响,非均质指数大对应的吸水强度较大,驱油效率就越高;非均质指数与水淹程度呈正相关,与剩余油饱和度呈负相关。
Clastic reservoir heterogeneity of the Second member of Dainan Formation in Zhenwu Oilfield in Yangzhou, Jiangsu Province, was quantitatively characterized by the method of data envelopment analysis. Each small layer was used as characterization unit in the process of calculation, and the evaluation group was formed with attribution parameters in each small layer of the whole region to determine the mathematical model. In addition, eight parameters which can influence the reservoir heterogeneity were considered to establish the linear programming model. The results show that the reservoir heterogeneity index is mainly between 0.5 and 0.9 with medium-strong heterogeneity in the second member of the Dainan Formation in Zhenwu Oilfield. And there is a positive correlation between the distribution of heterogeneity index and the sedimentary microfacies. The heterogeneity index has a direct impact on the effect of waterflooding. The larger the heterogeneity index is, the higher the absorption intensity and oil displacement efficiency are. The relationship between the heterogeneity index and the degree of water flooding is positive. The residual oil saturation and the heterogeneity index are negatively correlated.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第1期218-224,共7页
Journal of Central South University:Science and Technology
基金
国家科技重大专项(2011ZX05009-003)~~
关键词
真武油田
戴南组二段
数据包络分析
非均质指数
储层非均质性
Zhenwu Oilfield
the second member of Dainan Formation
data envelopment analysis
heterogeneous index
reservoir heterogeneity
作者简介
通信作者：杨少春，教授，博士生导师，从事油气地质与勘探研究；E-mail：scyaag@upc．edu．cn
