| 注蒸汽井筒沿程热物性参数及热损失新算法 |
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| 引用本文： | 顾浩,程林松,黄世军.注蒸汽井筒沿程热物性参数及热损失新算法[J].计算物理,2014,31(4):449-454. |
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| 作者姓名： | 顾浩 程林松 黄世军 |
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| 作者单位： | 中国石油大学(北京)石油工程教育部重点实验室, 北京 102249 |
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| 基金项目： | 国家科技重大专项(2011ZX05012-004,2011ZX05024-005-006);辽河油田科技项目(特超深层高存水油藏提高蒸汽热利用率技术研究)联合资助 |
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| 摘 要： | 基于干度的定义,对传统蒸汽干度方程进行改进,计算井筒热损失速率时,既按深度分段又按注汽时间分段,并采用Hasan等提出的两相流漂移流动模型计算井筒压力降.结果表明:改进后的模型用新算法的计算结果与现场实测值吻合很好,比传统的Beggs-Brill算法更准确.另外,在相同井深处,随着注汽时间的延长,蒸汽压力、温度和干度几乎不变,但是热损失速率逐渐降低.新算法为准确计算井筒热损失提供了参考.
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| 关 键 词： | 热物性参数 热损失 压力降 算法 |
| 收稿时间： | 2013-08-02 |
| 修稿时间： | 2013-08-02 |
New Algorithm for Thermophysical Parameters and Heat Loss along Wellbore During Steam Injection |
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| GU Hao,CHENG Linsong,HUANG Shijun.New Algorithm for Thermophysical Parameters and Heat Loss along Wellbore During Steam Injection[J].Chinese Journal of Computational Physics,2014,31(4):449-454. |
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| Authors: | GU Hao CHENG Linsong HUANG Shijun |
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| Institution: | Key Laboratory for Petroleum Engineering of the Ministry of Education, China University of Petroleum, Beijing 102249, China |
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| Abstract: | Traditional equation of steam quality is improved based on definition. Rate of wellbore heat loss is calculated with both depth step and time step. Drift-flux model of two-phase flow by Hasan is used to estimate pressure drop in wellbore. It indicates that results of modified model and new algorithm agree well with field date. They are more accurate than Beggs-Brill method. In addition, steam pressure, temperature and quality are almost unchanged at the same depth. However, rate of wellbore heat loss decreases with injection time. The algorithm provides a reference for accurate calculation of wellbore heat loss. |
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| Keywords: | thermophysical parameters heat loss pressure drop algorithm |
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