The RheGuard system ensured a clean hole, drilling 5,700 ft [1,737 m] of the 18.125-in section in under 24 h without the need for additional circulation at TD. Prior to reaching the reservoir in one interval, the RheGuard system was weighted up to 15.5 lbm/galUS (1.86 sg), pushing the limits of the 15.8-lbm/galUS (1.89-sg) leak-off test. When drilling commenced, tool readings indicated the rheological profile would permit higher flow rates, which enabled optimal hole cleaning and ECD management. With proper fluid management and wellbore strengthening, the interval reached TD with no losses to the formation. The liner was run and set with minimal losses, ensuring full zonal isolation.