层系间窜流的诊断分析

系统地研究了检验报废井层系间窜流的试井方法 ,运用弹性不稳定渗流理论 ,建立了报废井层系间窜流的渗流数学模型。根据油田现场实际情况 ,对模型进行了适当的简化 ,运用杜哈美原理得到模型的解析解 ,并首次提出了层系间窜流量的计算方法。为便于油田现场应用 ,在微机Windows环境下开发和编制了层系间窜流解释和分析软件 ,并对大庆油田杏 2 3 2 3井 (报废井 )和对应的更新井杏 2 3 更 2 3井的现场测试结果进行了计算和解释分析。所得结果和结论在油田得到了较好的验证 ,说明该方法及其软件具有一定的实用性

Study on diagnostic mode for cross-flow of interlayers

The well test mode for testing the interlayers' cross flow of abandoned well is systematically researched. A mathematical model of seepage flow for estimating the interlayers' cross flow in abandoned well is established by using elastic unstable seepage flow theory. The model is simplified in accordance with practices of the oilfield. The analytic solution of the mathematical model is deduced with Duhamel's principle. In particular, a method for calculating quantity of interlayers' cross flow is presented. For the convenient application to oilfield, a software for explaining and analyzing the interlayers' cross flow is developed. In order to verify the reliability of the mode and the software, the test results of the Xing 2 3 23 and the corresponding updating wells of Xing 2 3 G23 in Daqing oilfield are analyzed. The results of application are well validated by the practice. As a whole, the diagnostic mode and the developed software have a certain practicality.