US-based Schlumberger subsidiary OneSubsea has commissioned subsea boosting systems that have been installed in ultradeep waters in the Gulf of Mexico.

The subsea boosting systems have been installed in water depths of around 7,000ft and comprise three 3MW single-phase pump modules.

These modules are retrievable and are landed in their pump stations, along with subsea controls and power distribution systems.

OneSubsea president Mike Garding said: "We strive to deliver the solutions that help customers reduce costs, while increasing recovery from the reservoir, and in this case, our subsea boosting technology is enabling the customer to optimise production from one of the world’s deepest subsea reservoirs."

"Our subsea boosting technology is enabling the customer to optimise production from one of the world’s deepest subsea reservoirs."

Also available is the associated pump control, as well as instrumentation equipment with variable speed drive and step-up transformer providing power to the subsea equipment.

OneSubsea designed the new technology in a bid to increase production rates and help in recovery from subsea fields.

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The boosting pumps reduce back-pressure on the reservoir and are capable of improving recovery by 10% to 30%.

OneSubsea secured a contract in August 2015 to supply subsea processing systems for the Shell Offshore Stones development in the Gulf of Mexico.

Under the contract, the company delivered the 15,000psi subsea pump system, which was installed in the Gulf of Mexico at about 9,500ft.

The subsea processing systems included a dual pump station with two 3MW single-phase pumps as well as two subsea control modules.