Optimized Design and Application of Cavitation Jet Nozzle for CT Casing Descaling
In Daqing Oilfield,conventional techniques are inefficient,costly and time-consuming in dealing with the problems of sever waxing and scaling of oil/water production wells,as well as declining single-well liquid production and failed water adsorption of water production well caused by blockage near the perforations.To solve these problems,the cavitation jet target distance and angle were optimized by using optimal type of cavitation jet nozzle.The nozzle parameters were determined,and then the performance of the nozzle in cavitation jetting for cas-ing descaling of small diameter coiled tubing was verified through numerical simulation.Moreover,the principles of well selection for perforation descaling were defined,and the parameters of descaling process by small diameter coiled tubing were optimized.Field applications have revealed outstanding performance in casing descaling and per-foration descaling.The conclusions provide reference for tool development and process parameter optimization for casing descaling in oil/water production wells.
NETL
NSTL
万方数据
维普
