注水油田高含水后期开发技术方针的调整  

Adjustment of technical policy for water-flooding oilfield with high water cut in the late stage of development

作　　者：胡永乐[1] 王燕灵[1] 杨思玉[1] 贾文瑞[1] 

机构地区：[1]中国石油勘探开发研究院开发所,北京100083

出　　处：《石油学报》2004年第5期65-69,共5页Acta Petrolei Sinica

基　　金：中国石油天然气股份公司重点科技攻关项目 (0 1 0 50 2 )

摘　　要：总结了中国陆上油田的地质特点以及由此决定的开采特征。中国油田开发的基本方式和开采方针是早期内部注水、逐步强化开采。随着开采过程的延伸 ,在油田高含水后期开发 (综合含水率大于 80 % )中采用强化开采方式是低效的 ,不利于提高油田开采的经济效益和技术效果。提出了以降低含水率和提高注水波及体积为目标 ,建立以不稳定注水为中心的高效二次采油方式 。The geological and recovery characteristics of onshore oilfield in China were summarized. The policies of early-stage inter-water-flooding and stepwise enhanced recovery are the major ways for oilfield development in China. With the progression of recovery, the efficiency of enhanced recovery is low, which is disadvantageous for improving technical and economic benefits in the high water-cut stage (over 80%) of oilfield. Aiming at reducing water-cut and enhancing sweep efficiency, a high-efficiency secondary recovery way for the instable water-flooding program was proposed. This way can improve the technical and economic performances.

关 键 词：油田 注水开发 陆相沉积储层 强注强采 提高采收率 不稳定注水 二次采油 

分 类 号：TE314[石油与天然气工程—油气田开发工程]