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首页> 外文期刊>Transport in Porous Media >A New Analytical Formulation for Interwell Finite-Step Tracer Injection Tests in Reservoirs
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A New Analytical Formulation for Interwell Finite-Step Tracer Injection Tests in Reservoirs

机译：油藏井间有限步示踪剂注入试验的新分析公式

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摘要

Analytical models to describe tracer transport in reservoirs commonly set conditions either on the tracer concentration or the tracer flow at the injection border. Here a different formulation based on tracer sources is presented. This approach avoids some of the physical inconsistencies that can be found when setting conditions on the tracer concentration. The case of a tracer injected as a finite-step in an infinite one-dimensional homogeneous reservoir with a uniform flow is considered. The solution is analytically obtained. The results are confronted against the two common boundary cases. The new approach predicts slightly delayed and broader pulses. The tracer breakthrough curves differences can be large for small Peclet numbers. These differences weakly reduce by increasing the injection period. The new approach contains tracer injection elements that can make it suitable to describe real conditions found in reservoir tracer tests.
机译：描述储层中示踪剂传输的分析模型通常设定示踪剂浓度或注入边界处的示踪剂流量的条件。这里提出了基于示踪剂来源的不同配方。此方法避免了在设置示踪剂浓度条件时可能发现的某些物理不一致之处。考虑以有限步长将示踪剂注入具有均匀流动的无限一维均质油藏中的情况。通过分析获得溶液。结果面对两个常见的边界情况。新方法可预测脉冲稍有延迟和扩大。对于小Peclet数，示踪剂穿透曲线差异可能很大。通过增加注射时间，这些差异会微弱地减少。新方法包含示踪剂注入元素，可以使其适合描述储层示踪剂测试中发现的实际条件。

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