Numerical simulation of predicting and reducing solid particle erosion of solid-liquid two-phase flow in a choke  

作　　者：Li Guomei Wang Yueshe He Renyang Cao Xuewen Lin Changzhi Meng Tao 

机构地区：[1]State Key Laboratory of Multiphase Flow in Power Engineering, Xi＇an Jiaotong University, Xi＇an, Shaanxi 710049, China [2]China Special Equipment Inspection and Research Institute, Beijing 100013, China [3]School of Transport ＆ Storage and Civil Engineering, China University of Petroleum, Qingdao, Shandong 266555, China [4]Petroleum Exploration and Production Research Institute, Sinopec, Beijing 100083, China

出　　处：《Petroleum Science》2009年第1期91-97,共7页石油科学（英文版）

基　　金：supported by the Fund of Innovation Research Group of National Natural Science Foundation of China (Grant NO.5052160450323001);Major Program of National Natural Science Foundation of China (Grant No.50536020)

摘　　要：Chokes are one of the most important components of downhole flow-control equipment. The particle erosion mathematical model, which considers particle-particle interaction, was established and used to simulate solid particle movement as well as particle erosion characteristics of the solid-liquid two-phase flow in a choke. The corresponding erosion reduction approach by setting ribs on the inner wall of the choke was advanced. This mathematical model includes three parts： the flow field simulation of the continuous carrier fluid by an Eulerian approach, the particle interaction simulation using the discrete particle hard sphere model by a Lagrangian approach and calculation of erosion rate using semiempirical correlations. The results show that particles accumulated in a narrow region from inlet to outlet of the choke and the dominating factor affecting particle motion is the fluid drag force. As a result, the optimization of rib geometrical parameters indicates that good anti-erosion performance can be achieved by four ribs, each of them with a height （H） of 3 mm and a width （B） of 5 mm equaling the interval between ribs （L）.Chokes are one of the most important components of downhole flow-control equipment. The particle erosion mathematical model, which considers particle-particle interaction, was established and used to simulate solid particle movement as well as particle erosion characteristics of the solid-liquid two-phase flow in a choke. The corresponding erosion reduction approach by setting ribs on the inner wall of the choke was advanced. This mathematical model includes three parts： the flow field simulation of the continuous carrier fluid by an Eulerian approach, the particle interaction simulation using the discrete particle hard sphere model by a Lagrangian approach and calculation of erosion rate using semiempirical correlations. The results show that particles accumulated in a narrow region from inlet to outlet of the choke and the dominating factor affecting particle motion is the fluid drag force. As a result, the optimization of rib geometrical parameters indicates that good anti-erosion performance can be achieved by four ribs, each of them with a height （H） of 3 mm and a width （B） of 5 mm equaling the interval between ribs （L）.

关 键 词：Solid-liquid two-phase flow discrete particle hard sphere model CHOKE erosion rate antierosion numerical simulation 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]