Case Study Drilling with Liner Rescues Well in Deepwater Gulf of Mexico and Saves at Least USD 20 Million
Eliminating a dedicated liner run through a high-loss gassy salt zone reduced rig time by multiple days.
Rotational ball seat
Because the RBS is run in the setting string, it reduces the formation pressure surges and sharp rise in equivalent circulating density that are experienced when conventional liner toe ball seats shear. After the liner hanger has been set and the RBS sheared, a fullbore ID enables normal cementing operations, including the passage of drillpipe wiper plugs.