小集油田储层精细构型研究与应用

The Study and Application of Fine Reservoir Architecture in Xiaoji Oilfield

油藏开发后期剩余油分布极其复杂,开采难度大幅增加。为了进一步提高剩余油研究精度,满足精细注水、精细采油的目的,需要对储层开展更为精细的单一砂体(8级)及其内部构型(9级)的研究工作。此文针对小集油田枣Ⅲ油组冲积扇扇中储层的精细构型开展了深入的研究,在构型级次划分的基础上,对各级次构型单元进行了表征,并应用构型研究成果分析总结了小集油田枣Ⅲ油组水淹特征以及注水见效情况,可指导油田的精细开发。

In the late stage of reservoir development,the distribution of residual oil is extremely complex,and the difficulty of mining is greatly increased.To satisfy the purpose of fine water injection and fine oil recovery by increasing the accuracy of residual oil research,we need to research single sand body(level 8)and its internal(level 9)configuration.In this paper,the study in fine configuration is carried out on the third formation Xiaoji oilfield of middle alluvial fan reservoir.On the basis of hierarchical classification,the subunits are characterized.the characteristics of water flooding and flood response in the third formation Xiaoji oilfield are summarized,which can guide the fine development of oil field.