利用物质平衡法分析小层注水量

Analysis of Water Injection in Small Layers by Using Material Balance Method

李凤颖 查玉强 孙胜新 马帅 刘鑫

LI Fengying ZHA Yuqiang SUN Shengxin MA Shuai LIU Xin

中海石油（中国）有限公司湛江分公司，广东湛江　524057

CNOOC (China) Ltd. Zhanjiang Branch, Zhanjiang Guangdong 524057, China

北部湾海域油田注水井笼统注水居多，且复杂断块油田纵向多层，层间干扰作用较强。为精确掌握油田注水井对各个层位的注水情况，对物质平衡方程式作了深入研究。该文利用物质平衡方法劈分小层注水量，有效提高了注水井不同层位注水量的劈分精度。该方法动静结合，具有阶段性，解决了传统方法劈分误差较大的问题，为开展注水受效性分析、注水调配和潜力分析提供重要基础。

The majority of water injection wells in Beibu Gulf oilfield are general water injection, and the complex fault block oilfields are vertical multi-layer, and the interlayer interference is strong. In order to accurately grasp the water injection situation of each layer, in this study, the material balance equation is studied in depth. In this paper, the material balance method is used to split the water injection volume of small layers, and it effectively improves the splitting accuracy of water injection in different layers. This method is a combination of dynamic and static and has a phased nature. It solves the the problem of large splitting error in traditional method, which provides an important basis for analysis of water injection efficiency, water injection allocation and potential analysis.

https://doi.org/10.3969/j.issn.1008-2336.2021.03.037