论文部分内容阅读
东营凹陷利津地区砂砾岩体是早第三纪沙四段时期形成的以砂、砾岩为主的近岸水下扇沉积体。储集层岩石结构成熟度和成分成熟度均较低,多为双模态和复模态结构;影响储集物性的主要因素为成岩作用,其中压实作用和胶结作用是空隙度降低的主要因素,后期溶蚀作用使储层物性有所改善;该类砂砾岩体储集层孔隙类型多样,孔隙结构复杂,以中-低孔隙度、低渗透率储层类型为主。
The glutenite body in Lijin area of Dongying depression is a nearshore subaerobic fan sedimentary body mainly composed of sand and conglomerate formed in the fourth member of Shahejie Formation of Early Tertiary. The maturity and composition maturity of the reservoir rocks are both low and mostly of bimodal and complex modal structures. The main factors affecting the reservoir properties are diagenesis, in which the compaction and cementation are the main factors that lead to the decrease of porosity Factors and post-dissolution result in the improvement of reservoir physical properties. These types of glutenite reservoirs have various pore types and complex pore structures, with medium- low porosity and low permeability reservoir types.