It is intended for landing of sales and suspension traffic jams at the moment of completion of the cementing process (receiving the "Stop" signal) during two-stage cementing.
It is intended for installation as part of the shank both in the cementing interval and outside it, to ensure reliable isolation and separation of productive layers.
It is intended for cementing secret casing columns in order to prevent the impact of high hydrodynamic pressure on the productiокve reservoir when selling cement solution in the annulus space.