计算物理 ›› 2018, Vol. 35 ›› Issue (1): 64-70.DOI: 10.19596/j.cnki.1001-246x.7583

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SAGD循环预热储层温度分析模型

祁鹏, 刘慧卿, 庞占喜, 刘化普, 陈宇   

  1. 中国石油大学, 北京 102249
  • 收稿日期:2016-11-17 修回日期:2017-03-25 出版日期:2018-01-25 发布日期:2018-01-25
  • 作者简介:祁鹏(1993-),男,辽宁盘锦,硕士生,主要研究方向为石油天然气开发,E-mail:2361528388@qq.com

Temperature Distribution Modeling in SAGD Circulation Phase

QI Peng, LIU Huiqing, PANG Zhanxi, LIU Huapu, CHEN Yu   

  1. China University of Petroleum, Beijing 102249, China
  • Received:2016-11-17 Revised:2017-03-25 Online:2018-01-25 Published:2018-01-25

摘要: 根据矿场实际生产条件,综合考虑沿水平井方向和径向方向的热传导以及水平井部分深入储层的生产特点,建立三维热传导物理模型,并通过无因次化、Laplace变换、分离变量法及Stehfest数值反演等手段进行详细求解.所得结果与CMG软件计算结果吻合程度较高,验证了模型的准确性.分析无因次加热温度与无因次加热时间和无因次加热量的关系,得出径向距离越小、所需加热时间越短,后期所需加热量越多;径向距离越大、开始升温越晚,所需热量越大的结论.所得图版可用于预测相应温度下所需的加热时间和所需的总加热量,为SAGD循环设计提供依据.

关键词: 热传导, Laplace变换, SAGD循环预热, 温度分布

Abstract: Temperature pattern in circulation phase of SAGD process is studied. Two in-situ points, three-dimensional heat conduct and partial penetration of horizontal well into reservoirs, are considered. The model is processed by dimensionless treatment, Laplace transformation, separation of variables and Stehfest numerical inversion. The results are in accordance with simulations by CMG software which verifies accuracy of the model. It shows relationship between temperature and heating time and concludes that the smaller the radial distance, the less the time is needed. Calculation plate can be helpful to design heating time and amount of heat.

Key words: heat conduction, Laplace transformation, SAGD circulation phase, temperature distribution

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