Case Studies in the Kingdom of Saudi Arabia Demonstrate the Ability to Drill and Ream–in Casing with Multi Stage Cementing Devices and Well Bore Barriers
Abstract:This paper provides insight on planning and equipment-selection processes to successfully ream and drill in 9 5/8-in. casing through a water-sensitive shale formation, followed by a two-stage cement job to isolate lost-circulation zones. Proper placement of cement all the way to surface would be essential for providing an additional annular barrier to prevent casing-to-casing annular gas migration.
Selection of the equipment is dictated by the operation to be performed (i.e., drilling new hole v… Show more
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