论文部分内容阅读
通过对岩心观察、测井资料、压汞资料、沉积特征分析资料分析,研究了鄂尔多斯盆地庄36区长8储层特征。结果表明该区岩屑质长石砂岩和长石质岩屑砂岩,以粒间孔和粒内溶孔为主,属于低孔-特低孔,低渗-特低渗储层,储层砂体的非均质性中等到强,砂体发育的C8-1-1-2和C8-2-2-2非均质性最弱,其它层位非均质性中等。孔隙度、渗透率分布与沉积相分布规律基本一致,物性好的、孔隙度高的地区主要分布在水下分流河道微相中。
Through the analysis of core observation, well logging data, mercury intrusion data and sedimentary character analysis data, the characteristics of Chang 8 reservoir in Zhuang 36 area in Ordos Basin are studied. The results show that the lithic feldspathic feldspathic sandstones and feldspathic lithic sandstones are dominated by intergranular pores and intragranular dissolved pores, and belong to low porosity-ultra-low porosity, low permeability-extra-low permeability reservoir and reservoir sand The heterogeneity of the body is moderate to strong, the heterogeneity of C8-1-1-2 and C8-2-2-2 is the weakest in the sand body, and the other layers are of medium heterogeneity. The distribution of porosity, permeability and sedimentary facies are basically the same, and the regions with good physical properties and high porosity are mainly distributed in the microfacies of underwater distributary channel.