The ultimate yet most difficult goal of cementing operations is to provide zonal isolation by displacing drilling mud with cement slurries. Incomplete mud removal creates a poor cement seal and non-productive time (NPT). To ensure critical zonal isolation with mud removal optimization, PVI has developed CEMPRO+, an enhanced version of PVI’s mud displacement model, CEMPRO. The key enhancement of CEMPRO+ is the capability of displacement efficiency modeling.
Designed for land, offshore, conventional and/or foamed operations, CEMPRO+ uses advanced numerical methods to solve momentum and continuity equations on 3D grids and calculates the fluid concentration as well as displacement efficiency. It accounts for many factors that can affect the efficiency of a displacement job including fluid properties, pumping rates, casing standoff and complex wellbore geometry.