Abstract Sand erosion is a common problem in oil and gas field development. An experimental facility was designed and used to study the sand erosion of pipe bend under slug flow. A detachable test pipe bend was designed to measure the weight loss at 36 discrete locations on the pipe bend before and after each experiment. A Computational Fluid Dynamics (CFD) based erosion prediction method was developed to get a further understanding of the erosion. The relationships among the gas and liquid distribution, the sand movement and the erosion profile were analyzed to explain the erosion mechanism. The most severe erosion area of the pipe bend occurs at the axial angle of the elbow between 67.5° and 90° and at the circumferential angle of the elbow between 45° and 90°. The erosion profiles of the pipe wall are dominated by three particle collision mechanisms, namely, micro-cutting, plowing and impact deformation.

中文翻译：

---

水平弯管段塞流条件下砂粒冲刷试验与数值模拟

摘要 砂石侵蚀是油气田开发中的普遍问题。设计了一套实验装置，用于研究段塞流作用下弯管的砂蚀。设计了一个可拆卸的测试弯管来测量每次实验前后弯管上 36 个离散位置的重量损失。开发了一种基于计算流体动力学 (CFD) 的侵蚀预测方法，以进一步了解侵蚀。分析了气液分布、砂体运动和侵蚀剖面之间的关系，解释了侵蚀机制。弯管腐蚀最严重的区域发生在弯头轴向角在67.5°到90°之间，弯头圆周角在45°到90°之间。