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The non-Newtonian fluid mathematical model for strata static temperature forecast

Zeng Yi-Shan Lu De-Tang Guo Yong-Cun

The non-Newtonian fluid mathematical model for strata static temperature forecast

Zeng Yi-Shan, Lu De-Tang, Guo Yong-Cun
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  • Abstract views:  3026
  • PDF Downloads:  939
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  • Received Date:  16 April 2004
  • Accepted Date:  07 July 2004
  • Published Online:  01 March 2005

The non-Newtonian fluid mathematical model for strata static temperature forecast

  • 1. (1)合肥工业大学机械与汽车工程学院,合肥 230009; (2)中国科学技术大学力学和机械系,合肥 230026; (3)中国科学技术大学力学和机械系,合肥 230026;安徽理工大学机械系,淮南 232001

Abstract: Firstly,we choose a strata temperature gradient and start to compute.According to thermodynamic parameters,mud fluid parameters and well casing structure parameters etc.,the exit temperature of mud fluid can be obtained.By comparing the calculated value with the measured value of the exit temperature,we correct the chosen strata temperature gradient.Sequentially,we do above_mentioned works repeatedly until a proper strata temperature gradient is gained.Based on this,derived from the equations of thermodynamics and fluid mechanics,we can obtain the temperature variation along the depth of sidewall,and the mathematical model of distribution of strata temperature.Since mud fluid,rock and the temperature field are interactive and interfering during the process of drilling wells,the above technique provides a new method for investigating the theory and applications of the coupled thermal_hydrological_mechanical processes.

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