运用“四参数法”判别低效无效注水循环体  

IDENTIFICATION OF LOW-EFFICIENCY AND INVALID INJECTED WATER CIRCULATION BELTS BY FOUR PARAMETERS

作　　者：付艳波[1] 刘仁强[2] 

机构地区：[1]大庆油田有限责任公司第七采油厂,黑龙江大庆163517 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2009年第3期74-78,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：正确识别低效无效注水循环体，才能有针对性地采取油水井调整措施。通过开展低效无效循环体特征研究，建立了“四参数判别体系”方法判断低效无效注采循环体的可疑井组，结合高精度注入、产出剖面测试资料解释结果进行分析，判断低效无效循环层。同时利用静态资料，对可疑的低效无效循环层位加以确认，利用油水井动态资料判断循环体形成的时间，为采取措施减缓低效无效循环、提高注入水利用率和驱油效率提供一定的依据。通过实例分析表明，建立在动静态资料基础上的“四参数判别体系”方法能够在一个开发区大量的油水井中圈定低效无效注水循环的可疑井组，为进一步寻找具体层位指明了方向，是识别油田注水开发中低效无效注水循环体的一种有效实用的方法。Accurate identification of low-efficiency and invalid injected water circulation belts will help to effectively conduct treatments and adjustments in producers and injectors. Based on the analysis of the features of low-efficiency and invalid injected water circulation belts, a method named ＂ Identification System by Four Parameters＂ has been proposed, which can detect suspected well groups, where low-efficiency or invalid injected water circulation may exist, and combining with the interpretation results of logging data of precise injection and production profiles, the belts with low-efficiency or invalid injected water circulation can be determined. At the same time, these suspected belts and layers can be testified by static data, the time when low-efficiency and invalid injected water circulation occur can be determined by dynamic data of producers and injectors, and the references for the treat- ments of reducing low-efficiency and invalid injected water circulation, promoting the efficiency of water injection and enhancing oil displacement efficiency can be provide. Results of the case studies show that the above method based on both static and dynamic data can detect suspected well groups with the existence of low-efficiency or invalid injected water circulation, among a great quantity of producers and injectors in a developed block. The method provides references for further studies on finding the exact low-efficiency and invalid injected water circulation belts and becomes a practical and effective approach.

关 键 词：低效无效循环 高渗透条带 注入水利用率 驱油效率 

分 类 号：TE331[石油与天然气工程—油气田开发工程]