水驱砂岩油藏优势通道识别综述

General description of preferential migration passage in water-flood sandstone reservoir

砂岩油藏由于长期注水开发形成的优势通道使注入水低效、无效循环,并且使中高含水期油田其他增产措施实现困难。介绍了国内外利用生产测井资料,取心井资料,示踪剂监测资料,试井资料和生产动态资料等定性或定量识别水驱砂岩油藏优势通道的存在和发育程度分级方法。指出在大孔道参数计算方面,未解决如何表征优势通道参数的空间分布问题;针对优势通道发育程度分级方面,未进行属性参数确定后的分类研究,而此对优势通道差异化对策调整区域的选择具有重要意义。

Due to long-term water-flood development in sandstone reservoir,the preferential migration passage has made the water-flooding become low efficiency and invalid recycles,and make the stimulation measures difficult.In this article,by use of production logging data,coring well data,tracer monitoring data,well test data and production performance data,the quantitative or qualitative identification for the existence and development of edge water drive sandstone reservoir channel and its classification method have been studied.It is pointed out that in terms of macroscopic throats parameter calculation,the spatial distribution of channel parameters has not been solved.As for the preferential migration passage development degree classification,the property parameters classification has not been carried out.Therefore,it is of great significance for countermeasures adjustment of preferential migration passage differentiation.