Predicting long term coal seam gas concentrations from multi-component sorption

Abstract

During a last decade also, the coal seam gas (CSG) industry in Australia, particular in Queensland has grown rapidly due to large export-oriented LNG projects. Consequently, many CSG fields were developed to meet the necessary gas demand for these LNG plants as well as to supply domestic need. A key requirement in gas supply from the CSG reservoirs, important for conditioning the feed and operating conditions of the LNG plants is the correct forecasting of the gas quality variation with time. In particular, CO2 concentration in the produced gas is likely to trend upwards in the long term. The impact of this dictates the LNG plant gas preconditioning and may also raise environmental concerns. Because of these I acknowledge that an electronic copy of my thesis must be lodged with the University Library and, subject to the policy and procedures of The University of Queensland, the thesis be made available for research and study in accordance with the Copyright Act 1968 unless a period of embargo has been approved by the Dean of the Graduate School.