Comparative Economic and Technical Evaluation of AG FGTL Floating Gas to Liquid Vessel vs. AG FLNG

摘要

This study presents a comparative evaluation of a Floating Gas to Liquid Facility (FGTL) and a Floating Liquid Natural gas Facility (FLNG) as a way to monetize Associated Gas (AG) from existing oil producing offshore fields or from remote offshore gas fields. The study aims at showing that the FGTL is an option to be considered as a way to monetize AG. For this purpose, a previous study presented to the OMAE under OMAE2016 – 55152 is used for the FLNG with one liquefaction train for nitrogen refrigerant. This FLNG concept serves as a benchmark to evaluate the technical and economic relevance of the FGTL through the Net Present Value (NPV) of the Life Cycle Cost (LCC). The LCC compares the difference between the FGTL and the FLNG NPVs on the basis of a selling price for the gasoline of 1.4, 2.0 and 2.4 USD/Gal with a price for the LNG varying from 3.5 to 7.5 USD/MMBTU.