基于小信号放大理论的早期试井分析方法应用研究  

Study on Application of Well Analysis Method at Early Time Based on Small-Signal Amplification Theory

作　　者：刘淑芬[1] 杨景海[1] 卢德唐[2] 

机构地区：[1]大庆油田测试技术服务分公司,黑龙江大庆163453 [2]中国科学技术大学近代力学系,安徽合肥230027

出　　处：《油气井测试》2008年第6期25-28,共4页Well Testing

基　　金：国家自然科学基金(10672159;10702069);973项目(2006CB705805)资助

摘　　要：采用基于小信号放大理论的早期试井分析方法得到的典型曲线进行试井解释,解决了不出径向流直线段井的试井分析问题。为验证方法的正确性,使用标准井例,截取不同时间段的压力恢复数据进行曲线拟合。与常规的压力及其导数拟合方法相比,该方法大大降低了解释结果的多解性。结合实际井例,证明了早期试井拟合方法可解决低渗透油田不出现径向流直线段的压力资料解释问题;也可用于检验导数拟合方法的正确性,达到缩短关井时间的目的。Using typical curves acquired from well analysis at early time based on small-signal amplification theory for well test interpretation,it is solved about the question of well analysis without radial flow.In order to verify this method,curve-matching of pressure recovery data during different period of key hole is carried out.Comparing with the traditional pressure and derivative match method,this new method greatly reduced the diversity of interpretation results.Through application of this method,it is proved that early stage well fitting method can give answer to the question that hypotonic reservoir does not have linear pressure data of radius flow.This method can also be used to verify the derivative match results to reduces the shut-in time of well.

关 键 词：试井分析 径向流 早期资料 信号放大 

分 类 号：TE353[石油与天然气工程—油气田开发工程] TP212[自动化与计算机技术—检测技术与自动化装置]