Australia’s population is concentrated in the southeastern quadrant of the continent, where the cities are supplied with natural gas delivered by pipeline from central Australia or offshore Victoria. Although further exploration could prove sufficient new gas to supply all requirements into the next century, current known reserves of gas are unlikely to meet full market growth to the end of this century.
Perth, the only large population center in the west of the continent, is supplied from sources on shore Western Australia which are likely to be exhausted in the mid-1980s. The Perth market alone is too small and too distant to justify development of the far offshore, deep-water gas fields of northwest Australia, and any further requirement in the southeast of the country is too far into the future to provide a timely additional load. The Australian government has therefore given permission for exports from the Northwest Shelf in conjunction with supply to Perth.
The Northwest Shelf joint venturers propose to develop first North Rankin, the largest of the shelf gas fields. Gas is scheduled ashore in 1984 with anticipated sales of 370 MMcf/day of pipeline-quality gas into the west Australian market, and LNG exports of up to 6.5 million MT/year. The logical markets for the LNG appear to be Japan and the United States west coast.
Approval for export from the Northwest Shelf was granted because of specific circumstances. The general question remains, however, should Australia export future discoveries of natural gas? Because of long lead times and high costs in petroleum exploration and development, potential explorers need an answer to this question before they explore—an answer after the event is too late.
The distribution of population in Australia provides a key. In the populated southeastern quadrant where markets are potentially available in the 1990s and beyond, all gas discovered should be reserved for local use for the present, subject only to exception on a case by case basis to meet the special needs of individual projects.
Figures & Tables
The energy and mineral resources of the vast Pacific basin and its neighboring land areas play a vital role in meeting the ever-growing needs of society worldwide. Building on the foundation of a highly successful conference held in 1978, this volume contains 51 of the 135 papers presented there. Subjects included are general and specific in nature--oil, gas, and coal resources; geothermal fields, uranium; tin; evaporites, trace elements; water resources; magma energy and fuels from magma. Geological and geophysical techniques, and also the new tool of remote sending for petroleum and minerals exploration are represented. Tectonics, structure fundamentals, subsurface hazards, international treaties and the law of the deep sea are discussed. Seventeen countries and regions are represented in these papers: Thailand, Nicaragua, the United States, Japan, Peru, Antarctica, El Salvador, Australia, Mexico, Taiwan, New Zealand, China, Chile, Indonesia, Canada, and the Pacific Ocean.