TechnipFMC was appointed by one its major client to conduct a feasibility study for the development a highly sour gas-condensate field. Sour gas levels are in the range of 22-28%vol of H2S and 13-17%vol of CO2 and contains also organic sulphur components such as carbonyl sulphide, mercaptans and disulphides.
The study addresses the evaluation of onshore technologies for gas and condensate processing (gas sweetening, gas dehydration, NGL recovery, condensate stabilization and sweetening) for five different set of export product: sales gas, LPGs, hydrocarbon condensates, Sulphur or re-injection of the acid gases, with the objective of selecting the most attractive scheme based on economic and HSE criteria.
Using this case study, this papers aims to present the methodology, the different process configuration screened, including the latest development in sweetening technologies and acid gas reinjection, the pros and cons of each technology, and the influence of basic technico-economic parameters on the plant architecture and technology selection.
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