摘要
通过岩石薄片观察、压汞资料分析,结合沉积微相及储层物性数据分析,认为研究区主要为岩屑长石砂岩,物性普遍较差,属低孔、低~特低渗储层;孔隙类型主要为次生孔隙,其次为原生孔隙。沉积作用、成岩作用等因素控制着储层的储集性能:三角洲前缘水下分流河道砂体物性最好,河口坝砂体次之;成岩作用中,溶解作用产生的次生孔隙可有效改善储层物性。
According to the observation of thin section of rocks,the analysis of mercury injection data,combined with the analysis of sedimentary microfacies and reservoir physical property data,it is considered that the study area is mainly lithic arkose.The physical properties are generally poor,belonging to low porosity,low^ultra-low permeability reservoir;the pore type is mainly secondary pore,followed by primary pore.Sedimentation and diagenesis control the reservoir performance:the physical properties of underwater distributary channel sand body in delta front are the best,followed by that of Hekou bar sand body;In the diagenesis,secondary pores produced by dissolution can effectively improve the physical properties of reservoir.
出处
《化工设计通讯》
CAS
2020年第4期244-245,共2页
Chemical Engineering Design Communications
关键词
储层特征
沉积作用
成岩作用
阜三段
海安凹陷
the reservoir physical property
sedimentation
diagenesis
the 3rd member of Paleogene Funing formation
Hai’an Sag
