GTL : Gas to liquids. A conversion of gas to a liquefied state by compression and cooling. Also, a conversion of gas by chemical methods to an easily transportable liquid hydrocarbon of a more stable, longer chain
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}