Subsea 7 Chooses Trelleborg’s Thermal Insulation for Erha North

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Trelleborg’s offshore operation has secured a contract to supply its high temperature thermal insulation material for phase two of the Erha North project, Nigeria.

Appointed by subsea engineering, construction and services company, Subsea 7, Trelleborg will supply several tonnes of its high temperature advanced silicone insulation solution, Vikotherm S1,to the numerous oil and gas flowlines in the field. Manufactured using room temperature vulcanization technology, the coating is ideal for the high 300 °F / 149 °C temperature.

Acim Rezig, SCM Engineer at Subsea 7, comments: “As the offshore industry continues to get more complex, we’re more frequently searching for products which not only meet the specification, but also provide added benefits such as time saving and increased efficiency. Trelleborg’s Vikotherm S1 insulation was the ideal choice for the project, as it caters to the water depths and temperatures to guarantee flow assurance.”

Lee Roskell, Proposals Team Manager within Trelleborg’s offshore operation, says: “We developed a high temperature, microsphere free product to improve overall performance of the insulation system. This provided an added assurance that the product has been installed properly and is fit for purpose; verifying both the cast insulation and substrate.

“We designed the product to cater to the harsh environment at the Ehra field, incorporating a unique silicone compound. The system can operate at ocean depths of 9,832 feet/3,000 meters and temperatures as high as 300 °F/149 °C, so that the flow of oil and gas is not compromised.”

The Erha North phase two development sits at 3,960 feet/1,200 meters deep and is an extension of the existing Erha subsea system and infrastructure, which is currently producing to the existing Erha floating production, storage and offloading (FPSO) vessel located in Nigeria. Trelleborg is expected to complete its supply of thermal insulation by quarter four of this year.

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