The Sea Swift platform, left, will be operated by a Chevron subsidiary in Angola. Credit: Aquaterra Energy.

Chevron subsidiary Cabinda Gulf Oil has ordered a modular drilling platform for Angolan waters from UK-based engineers Aquaterra Energy.

The “Sea Swift” conductor-supported platform (CSP) is the third to be deployed in Angola, but the first working with Chevron. Modular CSPs are designed to be deployed within 10-18 months.

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The platform in Angola was specially designed for the Lifua-A field to work in water depths of 60m. An Aquaterra spokesperson told Offshore Technology: “We need to challenge the assertion that Sea Swift platforms are designed for shallow water.

“We can design and supply a Sea Swift platform for water depths up to 100m. Like all platforms, the Sea Swift is designed for the combination of soils, metocean conditions and topsides equipment loads that are specific to the individual project and this is the case here.”

Aquaterra teams will work with local engineers to build the platform in Cabinda, a province of Angola. The companies have not announced contractor details.

A spokesperson told Offshore Technology smaller platforms are not normally manned and day-to-day operations “would be identical to those performed on a similar topside on a conventional wellhead jacket”.

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In a statement, Aquaterra Energy technical director Stewart Maxwell, said: “CSPs are sometimes misunderstood and can often be overlooked for more traditional jacketed platforms.

“However, CSPs like Sea Swift can be installed by jack-up, so that operators can take advantage of the infrastructure they have available in the field, without the need to mobilise other assets; saving valuable time and resources.”

“This will be our fifth Sea Swift platform in West Africa and highlights the growing importance of flexible platform fabrication that can not only help local content rules but also reduce environmental impact via innovative installation options.”