摘要
综合应用密闭取心井的分析化验和生产动态等资料,采用岩心、测井等静态分析与实际生产动态分析相结合的手段,对研究区剩余油的分布特征进行了精细剖析。研究结果表明,剩余油层主要分布在油层中上部;各小层剩余可动油饱和度有明显差别,Ⅲ,Ⅳ砂组动用程度较高,剩余油饱和度较低,而Ⅰ,Ⅱ砂组动用程度较低,具有较高的剩余可动油;油井未控制油砂体部分的剩余油饱和度比较高。受沉积微相、岩性、物性等的影响,层间剩余油分布不均匀,主要集中分布在7-2,9-2,11-1和13等小层。废弃河道、天然堤、决口扇发育区由于砂体厚度小、物性差,致使含油饱和度相对较低;而分流河道、水下分流河道发育区水洗程度高且波及范围大,动用程度好,但因其油层厚、面积大、物性好,层内水洗程度存在很大差异,油层中上部仍具较大潜力。
In this paper,depending on the laboratory test data of pressure coring wells and actual production performance data,static analysis of core,logging and dynamic analysis of practical production were used to,systematical analyze the distribution characteristics of remaining oil in the study area. The study results show that,the residual oil in reservoir mainly distribute in the upper part of oil layer; the remaining moveable oil saturation of each layer appeared obvious difference,the producing degree in III,IV sand group are higher,the remaining oil saturation is low,while I,II sand groups have low producing degree,and the remaining oil has high residual oil saturation in oil well; the remaining oil saturation of oil sand which is not controlled by oil well is relatively high. The remaining oil of interlayer distribution is not inhomogeneous because it is affected by sedimentary microfacies,physical properties,mainly distributed in 7-2,9-2,11-1 and 13 small layers.The oil saturation in abandoned channel,natural levee,and crevasse splay development zone is relatively low due to the small thickness of sand body,poor physical property; the water washing degree in distributaries＇ channel,underwater distributaries＇ channel development zone is high. However,because of its thick reservoir,large area,good physical properties,the water level of interlayer has big difference,and the upper reservoir still has large potential in oil layer.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第3期429-437,共9页
Journal of Northwest University（Natural Science Edition）
基金
陕西省教育厅重点实验室科学研究计划基金资助项目(14JS082
14JS084)
西安石油大学博士科研启动基金资助项目(2014BS22)
关键词
扶余油田
剩余油饱和度
分布特征
层内
层间
平面
Fuyu Oilfield
remaining oil
distribution characteristics
layer
interlayer
plane
