西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (1): 57-60.DOI: 10.3863/j.issn.1000-2634.2002.01.018

• 石油与天然气工程 • 上一篇    下一篇

井下循环温度模型及其敏感性分析

何世明1 何平2 尹成1 徐壁华1
  

  1. (1.西南石油学院石油工程学院,四川 南充 637001; 2.中原石油勘探局)
  • 收稿日期:2001-06-16 修回日期:1900-01-01 出版日期:2002-02-20 发布日期:2002-02-20
  • 通讯作者: 何世明

A WELLBORE TEMPERATURE MODEL & ITS’PARA-METRIC SENSITIVITY ANALYSIS

HE Shi-ming 1 HE Ping2 YIN Cheng1 et al .    

  1. (Southwest Petroleum Institute, Nanchong Sichuan 637001, China)
  • Received:2001-06-16 Revised:1900-01-01 Online:2002-02-20 Published:2002-02-20
  • Contact: HE Shi-ming

摘要: 准确的井下循环温度对钻井与完井工程十分重要。在前人的基础上,根据热力学第一定律及传热学基本原理,建立了井内液体与井筒之间热交换的二维瞬态循环温度的数学模型,用无条件稳定的全隐式有限差分法数值求解数学模型,将所建立模型的预测结果与有关模型进行比较,并对影响井下循环温度的参数进行敏感性分析。该模型可用于计算实际循环条件下的管内液体、管壁、环空液体与地层的温度分布。

关键词: 循环温度, 敏感性分析, 注水泥, 钻井

Abstract: It is important for the drilling and completion to learn about accurate distribution of circulating temperature in the wellbore. According to the first law of thermodynamics and the theorems of heat transfer, a new two dimension transient math-ematical model of circulating temperature of heat exchange be-
tween the liquid in wellbore, pipe string and underground for-mation has been proposed, which has been solved by termless steady finite difference method. The predicted results from the new model presented in this paper are satisfactorily close to those from other proven models. The sensitivities of parameters to affect the circulating temperature in wellbore have also been
analyzed. The new model can be employed to calculate tempera-ture distribution of drilling mud, pipe string, fluid in the annu-lar and the formation of real circulating circumstance.

Key words: circulating temperature, sensitivity analysis, cementing, drilling

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