The primary objectives for centralization design (that is the number, type and spacing of cementing centralizers) should satisfy both the need to get the casing to the bottom as well as zonal isolation. However, despite this being apparently simple and obvious, cementers do not seem to appreciate the fact that without the casing at target […]
As a cementer, you are required to isolate a possible influx zone at 1600m, What can you do?
Influx zone characteristics These wells may show high dogleg severity in the intermediate section. Depending on the type of formation drilled across, there could be a tendency to form sort of keyseats, not only low side but also high side. They tend to get worse with additional drill string work, such as trips, reaming or circulation. […]