Cougar supplies buoy supported riser control system for Balltec use offshore Brazil

Offshore staff

HAMPSHIRE, UK – Cougar Automation has developed and commissioned a control system for Balltec to use on the first buoy supported riser (BSR) system installed on Brazil’s Guara-Lula project.

Cougar Automation was commissioned by Balltec to design a dedicated control and automation system consisting of a surface-mounted primary control that would control the movement of the buoy support system via tether adjustment, using a linear chain tensioner. This was required in order to manage the tension in the risers.

The pioneering system allows surface control of the subsea tensioner system via an ROV. Once over-boarded, the ROV facilitates establish the data pathway linking the surface control to the subsea control modules. The surface control is then used to effect buoy movement as required.

Operated by Petrobras in Santos basin, the BSR system consists of four submerged buoys each weighing approximately 2,000 metric tons (2,205 tons) which lie around 300 m (984 ft) below sea level.

02/06/2015

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