河流相砂体剩余油识别模型及其成因类型研究

Study of remaining oil identifying model and genetic type in river facies sand-body

纵向上细分单一河道沉积单元,平面上细分沉积微相及追踪单一河道砂体是认识和河流相储层高含水期剩余油挖潜及深化储层非均质性表征的关键。以模糊综合评判方法建立砂体剩余油解释模型,综合考虑动、静态因素及其影响因素的不确定性,是一种较为实用的剩余油模式识别方法。河流相储层剩余油成因类型丰富,可详细划分为5类成因类型,针对每一类剩余油分布形式应采取相应的挖潜措施。

To subdivide monotonous fluvial channel sedimentary units in longitudinal and sedimentary microfacies and tracing monotonous fluvial channel bodies in plane are the key to identify and excavate remaining oil potential and further studying of the reservoir heterogeneity characterization for fluvial reservoir in high containing water period. The sand-body remaining oil interpretation model is built by using the ambiguous comprehensive evaluation technology and considers integrated dynamic and static factors and indetermination of the influencing factors. It is a practical remaining oil model identification method. The genetic types in river facies sand-body are divided into 5 types and corresponding measures of excavating remaining oil potential must be adopted for each type.