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    UTEC NCS Survey completes AUV operations offshore West Africa

    Projects and Operations // May 29, 2015

    UTEC NCS Survey, an Acteon company, hascompleted three months of AUV operations for a number of Saipem projects located in West Africa.

    UTEC NCS performed pre-lay and as-laid surveys using their Gavia AUV systems on the Mafumeira and Litchendjili fields, offshore Angola and Congo.

    Using one of seven Gavia AUVs, an anchor pre-lay side scan sonar survey was carried out in the Mafumeira field to clear the way for barge operations alongside the Mafumeira Norte Platform.

    The versatility of working inside the 500m zone of the platform without affecting the platform operations was of particular value for this project.

    Pipeline route and barge anchor corridor pre-lay surveys were carried out in Litchendjili in water depths of 3m to 12m utilising the GAVIAs multibeam and side scan sonar.

    The AUV was re-deployed to carry out post lay operations along the pipeline corridor to inspect for free spans and other anomalies.

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