Planning requirements for Managed Pressure Drilling (Mud Cap)
The Mud Cap Drilling (MPD, Managed Pressure Drilling) is a technique that can be used even in case of total circulation losses.
Circulation losses are traditionally cured with Loss Circulation Materials (LCMs) pills, gunk pills and cement plugs, but these methods have disadvantages:
- uncertain about results
- time consuming and expensive,
- potential damage to reservoirs.
Severe circulation losses are often encountered drilling fractured formations, particularly carbonate (limestone, dolomite, etc.), specially when long vertical section are concerned, because of the differential . . .