Halliburton ROCS, a subsea control system designed to operate without traditional control umbilicals, has been deployed on a deepwater well in Brazil in partnership with Petrobras. Halliburton announced the deployment on October 28, 2026.

Key Takeaways

  • The installation is the first of its kind in Brazilian waters.
  • ROCS is designed to replace traditional control umbilicals during subsea completion operations.
  • The announcement did not quantify cost, time or risk reductions from the Brazilian deployment.

Halliburton ROCS reaches Brazilian waters

The deployment places Halliburton’s Remote Operated Control System on a Brazilian deepwater well for the first time. Halliburton worked with Petrobras on the installation, which is part of subsea completion operations.

The project applies a system designed to simplify offshore well work by removing equipment used in conventional control arrangements. The available details do not specify the well’s location or provide measured operating results.

How the subsea control system works

Halliburton’s description of the umbilical-less subsea control system says it uses integrated hydraulics and communication between surface equipment and downhole components instead of traditional umbilicals, reelers and hydraulic power units.

Halliburton says that design can simplify logistics and reduce exposure in hazardous work areas. Those are product-level claims, rather than quantified results from the Petrobras deployment.

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