Tools to Run Casing in Tight Clearances
Running casing in wellbores with small annular clearances can be challenging. Usually, there are small margins between the mud weight required to hold back the formation and the point at which the formation will break down. With little area for the expensive mud to be displaced from the well as the casing is being run in, considerable mud loss can occur unless run speed is slowed. Blackhawk’s surge reduction equipment provides an alternate flow path for displaced fluids, reducing surge pressure on the formation and increasing the speed that the casing or liner can be run without mud losses. This saves rig time and helps ensure a competent formation for successful primary cementing.