RBS Rotational Ball Seat for Liner Hanger Systems | Schlumberger
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RBS

Rotational ball seat

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Rated to 7,000 psi [48 MPa]
Rated to 325 degF [163 degC]

Save time running and setting liner hanger systems

The rotational ball seat (RBS) is a ball-type tubing-blockage device that is run in the liner setting string for the COLOSSUS CMT cemented liner hanger system and the COLOSSUS UNC uncemented liner hanger system.

When pressure is required to set hydraulic liner systems, a drop ball is released from the surface and lands on the ball seat contained within the RBS. Increasing the pressure above the predetermined shear value causes the ball seat to shear and rotate down. The ball is released, and a smooth and full ID remains through the tool.

Reduce risks of fracturing the formation with pressure surges

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.

RBS Rotational Ball Seat for COLOSSUS CMT and COLOSSUS UNC Systems
RBS Rotational Ball Seat for COLOSSUS CMT and COLOSSUS UNC Systems
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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.

Product Sheet RBS Asiento de Bola Rotacional

Dispositivo de bloqueo de la tubera de produccin de tipo bola que se baja en la herramienta de servicio del liner.

Product Sheet RBS Rotational Ball Seat

Run in the liner setting string for cemented and uncemented liner hanger systems, including COLOSSUS systems.

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