
Coal In-situ Conversion
COAL IN-SITU CONVERSION (ISC) A Commercial Challenge Review Introduction In-situ conversion (ISC) of coal, also referred to as underground coal gasification (UCG) and in-situ coal gasification (ISG), is an industry process by which a coal seam is converted into a product gas, by combusting, pyrolysing and gasifying the coal in-situ in the presence of an oxidant, after the coal is ignited. The product gas is typically referred to as synthesis gas or syngas and can be used as a feedstock for various applications, including fuels, fertilisers and chemicals production, including power co-generation or power only generation. A coal seam having injection and production wells with a substantially horizontal wellbore linking the two is typically referred to as an in-situ coal…