Garden Banks 388 Abandonment - Technical Aspects Covering Pigging and Flushing Operations

摘要

EEX Corporation decommissioned their Cooper Field Development during the summer of 1999. As part of the decommissioning activities, the subsea flowlines, gathering pipelines and export pipelines were pigged, flushed with inhibited seawater, and removed from service. All pumping operations were performed from the Floating Production Facility (FPF) "Enserch Garden Banks", which was moored at the host template in Garden Banks Block 388, in 2,200 feet of water. Unique to this phase of the decommissioning project was the use of a gel pig in conjunction with foam pigs to clear and flush the oil gathering pipeline.