砂岩油藏二次采油中剩余油饱和度的确定方法  

The Method of Determining Remaining Oil Saturation in Secondary Oil Recovery of Sandstone Reservoirs

作　　者：张方礼[1] 许宁[1] 陈和平[1] 杨周平[1] 

机构地区：[1]辽宁盘锦辽河石油勘探局勘探开发研究院

出　　处：《西安石油学院学报》1998年第2期22-24,共3页Journal of Xi'an Petroleum Institute

基　　金：中国石油天然气总公司"八五"重点项目

摘　　要：根据地下油水渗流规律和水驱特征分析，结合矿场实践提出了确定油井各产层剩余油饱和度的分层驱替特征分析方法．在此基础上进一步确定了油层组、砂岩组等的剩余油分布．这种方法适用于中、高含水期的注水开发油田剩余油饱和度及其分布的确定，并能够根据地层渗透率的变化修正相渗曲线，在一定程度上克服了油藏数值模拟中相渗数据对地层非均质性适应不足的缺点．经安口沈检１井密闭取心的含油饱和度分析和欢５０块两口挖潜井生产实践检验、证明分层驱替特征确定剩余油饱和度的方法是正确、可靠的．According to the analysis of the law of underground oilwater seepage flow and the characteristics of water drive,and field practice being combined,the method is put forward of determining remaining oil saturation and remaining oil distribution in secondary oil recovery of sandstone reservoirs. The method is suitable to water injection oil fields in medial and high water cut periods. It can also be used for correcting phase seapage curve according to formation permeability. It is proven that the method is reliable by practical cases.

关 键 词：二次采油 剩余油饱和度 含水率 砂岩油藏 

分 类 号：TE357[石油与天然气工程—油气田开发工程]