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Tech Report: Petrobras Improves Well Placement Using RSS Technology and Gyrosteering Capability

PowerDrive Xceed RSS and GeoSphere service enable precise steering 1 m below casing shoe despite magnetic interference, deepwater Brazil

Petrobras Improves Well Placement Using RSS Technology and Gyrosteering Capability

Publication Date: 11/28/2016

The usual strategy adopted by Petrobras in the complex turbidite reservoir in the Marlim Sul field is to drill a pilot well to investigate the base and top of the reservoir followed by a sidetrack to gyrosteer inside the sandstone bodies. Because of the magnetic interference generated by the 9 5/8-in casing, a regular magnetometer-based RSS required spacing of approximately 15 m from the shoe to correctly orient the bit in the desired direction and start a sidetrack. This necessary spacing had the potential to lead to a complete exit of the sandstone body, jeopardizing the well placement.




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