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Volume 06,Issue 01
   Volume & Issue: Volume 06,Issue 01



Numerical Investigation of Micro-Leakage Flow-Field of Underground Gas Wellbore

  Volume 06,Issue 01

 

Author :

Jingcui Li, Yan Xia, Guangjie Yuan, Qing He

 

Abstract :

In order to study the characteristics of micro-leakage flow field with high-pressure underground gas wellbore, the model of flow field is built. Using numerical simulation methods, the flow fields of micro-leakage are analysed. Based on computational fluid mechanics theory, the flow field distribution of different shapes of leakage orifice and different diameters of circular leakage orifice under different conditions are calculated. The velocity, pressure, mass flow and the characteristics of the flow field are analysed. The simulation results show that the larger the section of a leakage orifice is, the closer the leakage orifice shape is to circle, then the faster the gas pressure drops along the leakage orifice, the higher the gas flow velocity is.

 

Keywords :

Wellbore Micro-leakage Flow-field Simulation Shape.

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