One-way fluid-solid coupling analysis of subsurface safety valve plate

Abstract

When the working stratum pressure of the subsurface safety valve is large, the fluid in the well will have a greater impact on the valve plate, and even directly determine the opening resistance of the subsurface safety valve plate. By fluid analysis, we can get the fluid pressure cloud diagram and the velocity distribution cloud diagram of the valve plate at different opening angles, also we can get the opening resistance of the valve plate under the effect of the fluid, as well as the relationship between the resistance torque of the fluid resistance around the valve plate pinhole and the opening angle of the valve plate, providing certain guidance for the opening operation of the subsurface safety valve. Through the one-way fluid-solid coupling analysis, the stress cloud diagram and the maximum equivalent stress change under the effect of the fluid load are obtained when the valve plate is opened at different angles.

Study on Quantitative Evaluation Method for Failure Risk Factors of the High-Temperature and High-Pressure Downhole Safety Valve

“…The reliability of downhole safety valves is directly related to the production safety of oil wells, so it is necessary to carry out research on risk evaluations and reliability analyses of downhole safety valves. There have been many studies on the design and manufacture of downhole safety valves [2][3][4][5][6][7][8]. However, there are not many studies on the reliability of underground safety valves.…”