堵水调剖在低效水驱油藏中的发展与应用

Development and Application of Water Shutoff and Profile Control in Low Efficiency Water Drive Reservoir

目前油田存在含水较高的现象,为了保障石油开发开采能力,加快对油田化学堵水调剖技术的研究十分重要。首先调研了国内油田应用的堵水调剖技术与各类堵水调剖剂的性能、作用机理研究以及在油田的应用现状,重点介绍了化学堵水调剖剂,然后进行实际应用。通过油藏的地质特征、高渗透层的窜流特征,开展井组筛选标准、堵剂优选、方案优化的深入研究,在现场试验取得良好增油效果,能够有效提高水驱控制程度和采出程度,为低效注水开发区块提供了重要的借鉴意义。

At present,there is a phenomenon of high water content in oil fields.In order to ensure the oil development and extraction capacity,it is very important to accelerate the research on chemical water plugging and profile control technology in oil fields.This article first investigates the water plugging and profile control technology applied in domestic oilfields,as well as the performance and mechanism of various water plugging and profile control agents,as well as their current application status in oilfields.The focus is on introducing chemical water plugging and profile control agents,followed by practical applications.Through the geological characteristics of the reservoir and the flow characteristics of high permeability layers,in-depth research on well group selection standards,plugging agent selection,and scheme optimization has been carried out.Good oil increasing effects have been achieved through on-site experiments,which can effectively improve the degree of water drive control and recovery,providing important reference significance for inefficient water injection development blocks.