摘要
通过综合分析测井和岩心资料,在南翼山油田下油砂山组Ⅴ油组优选出22个主要含油小层,根据储层非均质性参数在层内、层间和平面上的变化,并结合隔夹层分布规律等方面表征Ⅴ油组储层的非均质性特征,从而分析储层非均质性对油气分布的影响。结果表明,Ⅴ油组储层层内非均质性整体较强,但对油气分布的影响较小;层间隔层发育稳定,平均厚度约为3 m;平面上物性特征主要受沉积相和储集岩层展布特征的影响,颗粒滩微相物性最好,储层连续、含油连片。总体上来看,层间和平面非均质性对Ⅴ油组油气分布起着主要控制作用。
Through comprehensive analysis of logging and core data,22 main oil-bearing small layers of lower Youshashan formationⅤoil group are selected.According to the changes of reservoir heterogeneity parameters in layers,interlayer and on the plane,and combined with the distribution law of interlayers,the heterogeneity characteristics ofⅤoil group are characterized,so as to analyze the impact of reservoir heterogeneity on oil and gas distribution.The results show that the heterogeneity in the reservoir layer ofⅤoil group is strong as a whole,but it has little effect on oil and gas distribution;the interlayer develops stably,with an average thickness of about 3 m;the physical properties on the plane are mainly affected by sedimentary facies and sand body distribution.The physical properties of granular beach micro-facies are the best,and the sand body is continuous and oil-bearing.In general,the interlayer and plane heterogeneity play a major role in controlling the oil and gas distribution ofⅤoil group.
作者
刘乾乾
罗贺元
LIU Qianqian;LUO Heyuan(School of Geosciences,Yangtze University,Wuhan,Hubei 430100,China)
出处
《石油地质与工程》
CAS
2022年第3期69-73,共5页
Petroleum Geology and Engineering
关键词
储层非均质性
油气分布
南翼山油田
柴达木盆地
reservoir heterogeneity
distribution of hydrocarbon
Nanyishan oilfield
Qaidam basin
