Groundbreaking Advances in Offshore Pipelay from Denso

Denso Viscotaq Offshore Field Joint Coating SystemIn June 2024, a Malaysia-based oil and gas exploration and production company embarked on an ambitious offshore pipelay campaign aimed at developing three offshore gas fields in Southeast Asia.

Executed by a renowned global Offshore Installation Contractor (OIC), the project entailed the construction of two new sour-rated carbon steel pipelines, each equipped with risers and subsea spools. These pipelines included an 18 km run of 254mm (10”) diameter pipe and a 22 km run of 304.8mm (12”) diameter pipe, both designed to operate at a temperature of 109° Celsius.

After a successful campaign featuring multiple rounds of rigorous testing and client approvals, the project marked the first time the offshore installation contractor used a cold applied field joint coating system, specifically the innovative Viscotaq™ Offshore Field Joint Coating (OFJC) system from Winn & Coales (Denso) Ltd.

Successfully meeting all requirements of the ISO 21809-3 standard, the Viscotaq OFJC system was selected for its capacity to handle a maximum pipeline service temperature of 115°; enable a production application time of less than 5 minutes per joint; and achieve an average Shore D 45 hardness after a cure time of 5 minutes. This robust system aided the contractor in finishing three days ahead of schedule and realising savings of over US$1 million, demonstrating to both the client and the OIC that a cold-applied FJC system can be safe, efficient, robust, and effective while significantly reducing specialist equipment and manpower.

Winn & Coales (Denso) Ltd are leading manufacturers and suppliers of corrosion prevention and sealing systems and celebrated 140 years of service to industry in 2023. For further specific details see: https://www.denso.net/groundbreaking-advances-in-offshore-pipelay-densos-viscotaq-offshore-field-joint-coating-system/?ref[]=/latest&reftitle[]=News