Jens HETLAND & Teimuraz GOCHITASHVILI In contrast to oil, natural gas is usually routed through pipeline systems stretched from the wellhead to the end-user although liquefied natural gas (LNG) is gaining increased interest; the commercialisation of natural gas fields is inherently linked to rigid transportation systems that require huge investments in tangible assets fixed to specific locations; the supply of natural gas is constrained by the transportation system, and requires access to appropriate infrastructure for transport and distribution; the trading of natural gas is traditionally...