January 2022, Vol. 249, No. 1

Tech Notes

Inspecting Deepwater Risers, Flowlines on a West Africa Flowline Loop

Effective integrity management of subsea pipelines has been especially challenging due to the difficulty of pipeline access, safety and other considerations.    Quest Integrity recently successfully completed the inline inspection (ILI) of a 12-inch production flowline loop for a major deepwater pipeline operator in West Africa. The subsea system was configured as a 9.9-mile (16-km) piggable loop comprising two risers, four flowlines and two manifolds, supporting a total of seven producing wells.   Inspection was required for regulatory compliance and to assess the integrity of the production flow loop, ensuring it was fit-for-service.   The operator had experienced previous challenges wi

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