US Patent 11486227 Reservoir isolation valve for secondary completion

Disclosed herein is a reservoir isolation valve for secondary completion, which includes a shell assembly, a sleeve assembly arranged in the shell assembly, a reset spring arranged between the shell assembly and the sleeve assembly, a movable tube, an inner limit tube, an outer limit tube, an outer bearing socket, an inner bearing socket, a thrust bearing, a ball valve arranged in the sleeve assembly, a stepped shaft fixed on the ball valve, a transmission mechanism configured for connecting the movable tube to the stepped shaft and allowing the stepped shaft to rotate and a startup part.