论文部分内容阅读
本文以姬塬油田铁边城区块长4+5油藏为例,在铁边城区块沉积微相和顶面构造图的基础上,利用电测曲线解释,选取砂体厚度、有效厚度、渗透率、孔隙度、含油饱和度五个参数进行聚类分析,对储渗单元进行划分,将长4+5油藏划分为Ⅰ、Ⅱ、Ⅲ三类储渗单元。划分结果表明,研究区长4+521和长4+522小层为该区长4+5油藏的主力油层,各类储渗单元与储层岩性、物性和沉积微相具有很好的对应关系。本次小层综合评价的参数选择可以客观地反映低渗、低孔、储层物性差、非均质性强等地质特征。
Taking the 4 + 5 reservoir in Tiebian urban block of Jiyuan Oilfield as an example, based on the sedimentary microfacies and the top structure map of the Tiebian urban block, the paper uses the electric measuring curve to explain and select the sand body thickness, effective thickness and infiltration Rate, porosity and oil saturation. The reservoirs of Chang 4 + 5 are divided into three types of Ⅰ, Ⅱ and Ⅲ reservoirs. The division results show that the 4 + 521 and 4 + 522 small layers of study area are the main reservoirs of 4 + 5 reservoirs in this area, and all kinds of reservoir units have good reservoir lithology, physical properties and sedimentary microfacies Corresponding relationship. The parameter selection of the comprehensive evaluation of the small layer objectively reflects the geological characteristics of low permeability, low porosity, poor reservoir physical properties and strong heterogeneity.