Petroleum Africa
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Thursday, May 28, 2015
UTEC NCS Survey completed three months of AUV operations for a number of Saipem projects located in West Africa. The company performed pre-lay and as-laid surveys using their Gavia AUV systems on the Mafumeira and Litchendjili fields, offshore Angola and the ROC.
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 MafumeiraNorte Platform. The versatility of working inside the 500-meter 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 three meters to 12meters utilizing the GAVIA’s multibeam and side scan sonar. The GAVIA 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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