新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (2): 181-183.

• 油藏工程 • 上一篇    下一篇

深水油气井温度压力计算

刘通a, 李颖川b, 钟海全b   

  1. 西南石油大学 a.研究生部;b.油气藏地质及开发工程国家重点实验室,成都 610500
  • 收稿日期:2009-11-01 修回日期:2009-12-23 发布日期:2020-09-17
  • 作者简介:刘通(1986-),男,四川乐山人,在读硕士研究生,采气工程,(Tel)15902845647(E-mail)liutong697@126.com.

Calculation of Wellbore Temperature and Pressure in Deepwater Oil-Gas Wells

LIU Tonga, LI Ying-chuanb, ZHONG Hai-quanb   

  1. Southwest Petroleum University, a. Graduate School, b. State Key Laboratory of Oil-Gas Reservoir Geology and Exploitation, Chengdu, Sichuan 610500, China
  • Received:2009-11-01 Revised:2009-12-23 Published:2020-09-17

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摘要： 井筒温度分布是深水油气井开发和生产动态分析的必需参数。由于深水油气井裸露在海水中的井段较长,其传热规律不同于地层段,海水温度又随其深度呈非线性分布并随季节呈周期性变化,使得其温度计算较陆上和浅海油田更复杂。根据传热学基本理论和海水、地层段井筒传热特点,建立了深水油气井井筒温压耦合数学模型,采用龙格库塔法求解。该模型考虑了变化的环境温度梯度、井身结构、管斜角、不同环空传热介质等。实例计算结果表明,所建立的模型与实例数据吻合较好,可满足开发工程需要。

关键词: 深水油气井, 深海环境, 温度分布, 压力分布, 总传热系数

Abstract: The wellbore temperature profile is the necessary parameter for exploitation and performance analyses of deepwater wells. However, the hole interval submerged in deepwater is too long, its heat transfer law in seawater is different from that in stratigraphic section, and the seawater temperature assumes the nonlinear distribution with well depth and the periodic change with the season, hence its temperature calculation in deepwater is much more complicated than in onshore and shallow sea oil fields. Based on the basic theory of heat transfer and wellbore heat transfer characteristics in seawater and strata, the mathmatic model of wellbore temperature-pressure coupling in deepwater is developed and calculated by Runge-Kutta iteration method. In this model the varied environmental temperature gradient, hole structure, casing oblique angle and heat transfer medium, etc. The case study shows that the model result is in accordance with the field data, and meets the demand for the development engineering or project.

Key words: deepwater well, deepwater environment, temperature profile, pressure profile, overall-heat-transfer coefficient

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