Title Research on Erosion Simulation Test of Full-Size Sand Control Screen in Oil and Gas Wells

Abstract

With the continuous development of domestic oil and gas fields, sand production in oil layers has become a common problem in the process of oil production. In the completion of horizontal wells, vertical wells, lateral wells and sidetracking, sand control screens are an important oil production equipment is widely used. In order to improve the service life of sand control screens and ensure the development process of oil and gas wells, the erosion simulation test of full-size sand control screens was studied in depth. In this paper, using the self-developed choke valve type visual screen erosion test device, the connection of the screen erosion test device under the sand-bearing fluid erosion condition and the design of the test plan are carried out. The nozzle angle and erosion distance are used to analyze the erosion and wear of the screen under different conditions, and the erosion law of the full-size sand control screen under field conditions is experimentally studied and analyzed. Corrosion ability was compared, The test results show that with the increase of the sand-containing mass fraction, the increase of the erosion angle, and the decrease of the erosion distance, the time for the sand-containing fluid to penetrate the screen tube decreases. Tubes have better erosion resistance than precision composite screens. The experimental study highly restores the erosion and wear of the screen under actual operating conditions. The test results are of great significance for the design and optimization of the screen structure and prolonging the service life of the screen.