Transocean deploys hybrid energy storage on floating rig

Offshore drilling contractor Transocean has deployed what is says is the world’s first hybrid energy storage system aboard a floating drilling unit. The system is now operational on the Transocean Spitsbergen rig, engaged in drilling operations at the Snorre field in Norway.

Transocean Spitsbergen; Photo by Kenneth Engelsvold; Source Equinor

Transocean said on Wednesday that its patented hybrid power technology, developed in partnership with Aspin Kemp and Associates, reduces fuel consumption and increases a dynamically positioned rig’s station-keeping reliability by capturing energy generated during normal rig operations that would otherwise be wasted, and storing it in batteries.

This energy is then used to power the rig’s thrusters. This important operational and safety enhancement targets a 14% reduction in fuel use during normal operations, leading to a significant reduction in NOx and CO2 emissions, according to the rig owner.

Transocean’s investment is funded in part through fuel saving incentives in its contract with Equinor and by the Norwegian NOx Fund.

“This first of its kind hybrid power upgrade will further enhance the reliability of our operations, while simultaneously reducing fuel consumption, operating costs and our environmental footprint,” said Jeremy Thigpen, President and CEO.

“We are pleased and proud to work alongside Equinor to jointly identify and implement more efficient and sustainable technology to deliver high-value wells to the industry.”

It is worth reminding that Siemens last December said it would supply a battery-based energy storage solution to the West Mira semi-submersible and turn it into “the world’s first hybrid offshore drilling rig.”

Siemens said BlueVault, the company’s advanced lithium-ion battery-based solution, would be installed on Northern Drilling’s West Mira offshore drilling rig set to operate in the Nova Field, approximately 120 kilometers northwest of Bergen in the North Sea.

In addition, Maersk Drilling last May it would convert its Maersk Intrepid jack-up to hybrid rig. The jack-up entered a series of upgrades to convert it to a hybrid rig with low levels of NOx emissions, adding data intelligence to further reduce energy consumption and CO2 emissions.

The Maersk Intrepid in September signed an extension with Equinor for more work on the Martin Linge field. During the contract period, Maersk Drilling said it would complete the series of upgrades of Maersk Intrepid to turn it into the hybrid, low-emission rig.

Offshore Energy Today Staff

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