气井井下节流器冲刷腐蚀数值计算

Contemporary Chemical Industry(2013)

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Abstract
井下节流技术是一种新的采气技术,但是喷嘴会受到气流的冲刷腐蚀,影响节流嘴的使用寿命。根据流体流动的基本定律,建立了喷嘴冲刷腐蚀的数学模型,运用SIMPLE算法解方程。根据数值计算的结果发现喷嘴的入口处和后端剪切应力比较大,冲刷腐蚀比较严重。喷嘴壁受到的剪切应力随入口压力和流体粘度的变大而升高,研究的结果可以为节流器喷嘴的设计提供指导。
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Key words
Shear stress,Numerical calculation,Choke,Erosion-corrosion
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