摘要：During the process of gas production in high-pressure, high-temperature (HPHT) gas wells, the choke valve, as the most vital component of the surface control equipment, plays a significant role in regulating the output and reducing the fluid pressure to ensure the safety of surface gathering and transportation equipment. High-pressure, high-velocity fluid flow and solid-phase particles cause deterioration of the choke valve. With the enhancement of intelligent and digital oilfields, conventional choke valves have been progressively replaced by electric choke valves. Due to the complex structure of the throttle valve, the flow path and the velocity state of the fluid in the throttle valve, and the distribution law of the erosion fraction are quite distinctive from those in the ordinary throttle valve, meriting further research. In this paper, a simulation of computational fluid dynamics (CFD) was conducted to determine the effects of the pressure distribution, fluid state, divergent particle sizes, and sand volume on the erosion rate of the choke valve. Under various valve openings, the fluid state and the location of high-risk points can be ascertained. The large particle size (diameter greater than 6 mm) of sand and gravel is convenient for causing concentrated erosion in the position of the valve hole, which induces the channel diameter to expand. Fine silt sand (diameter from 0.1 mm to 1 mm) gives rise to relatively uniform abrasion to the choke's current-facing surface. This study can optimize the layout of the choke valve and reduce the cost and number of switching wells, thereby decreasing the frequency of maintenance and the pressure fluctuation's effect on the formation.

关键字：high-pressure gas wells; CFD simulations; adjustable choke valve; erosion

ISSN号：2227-9717

卷、期、页：卷: 10期: 10

发表日期：2022-10-01

影响因子：2.847200

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：PROCESSES

参与作者：郭玲,徐小辉,高涵

通讯作者：王亚永,杨红

第一作者：韩国庆

论文类型：期刊论文

论文概要：郭玲,王亚永,徐小辉,高涵,杨红,韩国庆，Study on the Erosion of Choke Valves in High-Pressure, High-Temperature Gas Wells，PROCESSES，2022，卷: 10期: 10

论文题目：Study on the Erosion of Choke Valves in High-Pressure, High-Temperature Gas Wells