抄録
LNG has been the major oversea transportation means since the era of 1970. The development costs of LNG plant, export and import terminals and LNG carriers have been very expensive, then only huge gas fields more than several Tcf reserves have been developed which enables initial cost recovery. Technical innovation, clean energy demand and the current oil price ascent are leading the stranded gas fields development by use of new gas transportation technology. Among them CNG (compressed natural gas) is one of the means which has low energy loss in the CNG processing compared to chemical transformation such as GTL (gas to liquid) and is capable to supply gas directly to the gas pipeline grid by easily re-gasification on board CNG carrier. This paper describes technical and economical characteristics of CNG and its application among many gas transportation systems.
