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There are 22 countries and territories listed by Globalshift in the Australasian region. Australia dominates the region’s oil and gas industry but oil production here is declining whilst gas output (onshore and offshore, conventional and unconventional), particularly for export as LNG, is increasing.

New Zealand has some onshore and offshore oil and gas production and potential in just one basin (Taranaki), whilst Papua New Guinea has onshore oil and gas production and opportunities for gas offshore in the Gulf of Papua.

Timor Leste, whose prospective offshore acreage is shared with Australia, has producing oil and gas fields in the joint area and further gas discoveries that may eventually be developed in partnership with Australia.

Nearly all the other countries in the Pacific are coral reefs or volcanic islands. They have no sediments to generate and trap sufficient oil and gas to allow commercial development.

Regional Group in Asia

ASIA (Australasia)

Population of the region: 40 million     

AUSTRALIA; ADELAIDE

Old transport system

Brief description of the region

Land area (sq kms)

Oil prod (000s b/d)

Gas prod (bcm/yr)

Oil cons (000s b/d)

Gas cons (bcm/yr)

More numbers Statistics

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8,529,349

544

102

1,245

39

Australasia includes countries within the Australian tectonic plate (Australia, Papua New Guinea and New Zealand) and within several complex micro-plates along the northern edge of Australia (Timor Leste, northern Papua New Guinea, the Solomon Islands, New Caledonia, Micronesia and Guam). The remaining countries of Australasia in the South Pacific Ocean, including part of New Zealand, overlie the Pacific Plate.

The Australian Plate was once part of Gondwana from which it split 184 mm years ago in the early Jurassic. Australia remained connected to India and Antarctica until the Early Cretaceous (100 mm years ago) when India began moving northwards. Australia, Zealandia and Antarctica then began rifting in the Late Cretaceous (85 mm years ago) with Antarctica completely separating in the Eocene (45 mm years ago).

The eastern margin of the Australian Plate is a complex convergent boundary. Here the subducting Pacific Plate has produced the Tonga and Kermadec trenches and arcs and uplifted part of New Zealand's North Island. The Taranaki Basin west of of North Island is a Cretaceous rift associated with the break-up of Gondwana.

The South Island of New Zealand mostly lies within the continent of Zealandia which runs from Melanesia to New Zealand’s Antarctic islands in the south and is separated from the Australian continent by a transform boundary marked by the Alpine Fault. South of New Zealand the Macquarie Fault Zone is a transition to where the Australian Plate is subducting under the Pacific Plate. The divergent southern margin with the Antarctic Plate then forms the Southeast Indian Ridge (SEIR) as far as the Rodrigues Triple Point in the Indian Ocean (which connects the Africa, Antarctic and Australian plates).

India and Australia were once thought to be a single plate but seismic activity suggests a broad plate boundary zone which becomes a subduction zone south of Sumatra. The margin with the Sunda Plate in Eastern Indonesia and New Guinea is a complex plate and shear zone formed by stresses built up from differing rates and angles of eastwards movement of Eurasia and Australia agianst the westward penetration of the Philippine and Pacific Plates. The Papuan Fold Belt basins of Papua New Guinea are inter-montane depressions created from shearing and thrusting along this boundary.

Along the Northwest Shelf of Australia and south of Timor Leste, which lies on a separate continental fragment, several basins are present which originated in the Palaeozoic but rifted at the break-up of Pangaea and Gondwana. Other basins in Australia include the Gippsland Basin, which was part of the Early Cretaceous rift system between Antarctica and Australia, and the Cooper Basin which is a continental depression that existed before the break-up of Pangaea.

Finally the Pacific Plate is a large oceanic tectonic plate with volcanic and coral islands created by hot spot activity. In Australasia the eastern side of the Pacific Plate is largely divergent with the Nazca and Cocos Plates of South and Central America at the East Pacific Rise. No interior or marginal oil- and gas-bearing basins are evident in this region and the only continental crust is present in the south island of New Zealand.  

Countries/territories in region:

American Samoa

Australia

Cook Islands

Fiji

French Polynesia

Guam

Kiribati

Marshall Islands

Micronesia

Nauru

New Caledonia

New Zealand

Niue

Palau

Papua New Guinea

Samoa

Solomon Islands

Timor Leste

Tokelau

Tonga

Tuvalu

Vanuatu

ASIA (Australasia)

Vertical axis in chart corresponds to thousands of barrels of oil equivalent per day.

Oil -  fossil oil produced from on and offshore reservoirs, including tight sands/shales; and liquids extracted from gas.

Gas - sales gas produced from on and offshore reservoirs, including tight sands/shales and coal beds.O

Full breakdowns are available in datafiles.

Vertical axis in chart corresponds to number of wells spudded in year including stand-alone sidetracks.

Wells in chart include those drilled in exploratory and development categories for oil and gas, but excluding CBM.

Full breakdowns are available in datafiles.