Troubleshoot and solve a gas treater downcomer unsealing problem: Part 1

H. Z. KISTER, Fluor, Aliso Viejo, California; and N. M. MOHAMED, WorleyParsons Engineering Pty Ltd., Abu Dhabi, UAE The ADGAS Integrated Gas Development (IGD) project in Abu Dhabi transfers 900 MMscfd of dry gas from gas wells to the Habshan industrial site through a 30-in. pipeline. The project comprises a gas receiving station, three gas drying units with capacities of 300 MMscfd each, three gas turbine-driven compressors and a fuel gas treatment system with a capacity of 25 MMscfd of sweet gas. The objective of the fuel gas treatment (FGT) is to supply sweet fuel gas for the turbines and also for the other consumers (flare purge and pilots). The FGT system consists of an absorber and a