Petroleum Reservoir Evaluation and Development ›› 2021, Vol. 11 ›› Issue (6): 911-916.doi: 10.13809/j.cnki.cn32-1825/te.2021.06.017
• Comprehensive Research • Previous Articles
LIU Wenfeng1(),ZHANG Xuyang1,SHENG Shuyao2(),WANG Kang1,DUAN Yonggang2,WEI Mingqiang2
Received:
2020-10-11
Online:
2021-12-26
Published:
2021-12-31
Contact:
SHENG Shuyao
E-mail:liuwenfeng@petrolchina.com.cn;shengshuyao513@foxmail.com
CLC Number:
LIU Wenfeng,ZHANG Xuyang,SHENG Shuyao,WANG Kang,DUAN Yonggang,WEI Mingqiang. Research on a new combination method of production decline analysis for tight oil: Cases study of Mahu tight reservoir[J].Petroleum Reservoir Evaluation and Development, 2021, 11(6): 911-916.
Table 1
Empirical production decline analysis methods for oil wells"
经验递减模型 | 优点 | 缺点 | 理论模型 | 适用性条件 |
---|---|---|---|---|
Arps双曲递减模型 | 计算简单,快捷方便 | 无法对生产早期的不稳定流阶段进行递减分析;关井操作会使产量预测出现较大偏差 | | 边界控制流阶段;定压生产;生产数据连续稳定 |
幂律指数递减模型 | 可对整个生产过程的生产数据进行拟合 | 模型待定参数多;模型中部分参数物理意义模糊;对于生产时间较短的井预测结果不准确 | | 线性流、边界控制流阶段;定压生产 |
改进的幂律指数 递减模型 | 可对整个生产过程的生产数据进行拟合;参数物理意义明确;精度更高 | 在实际油藏的复杂流动状态下并不适用 | | 线性流、边界控制流阶段 |
Valkó扩展指数 递减模型 | 预测可采储量值结果较为准确 | 模型参数确定过程较为复杂;无法对边界流阶段进行递减分析;生产后期段的产量预测值偏低 | | 线性流阶段;定压生产;生产数据连续稳定 |
Duong递减模型 | 计算步骤简单;可用非稳态流动阶段的数据来对拟稳态流阶段进行产量拟合 | 无法对边界流阶段进行递减分析;生产后期段的产量预测值偏高;生产数据波动对产量预测结果影响较大 | | 裂缝性的线性流阶段 |
扩展Duong递减模型 | 可对整个生产过程的生产数据进行拟合 | 方程参数较多,拟合过程复杂 | | 线性流、边界控制流阶段;定压生产 |
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