This package presents interactive geohistory models of the regional burial, thermal and hydrocarbon maturation and expulsion history of the Vulcan Sub-basin and adjacent Ashmore Platform and Londonderry High, Timor Sea. Removed due to lack of data 17/07/15 AM

Isotopic and biomarker analyses has identified 9 distinct petroleum families in the Bonaprate Basin, which can be corellated with source rocks of Cretaceous-Carboniferous age.

No product available. Removed from website 25/01/2019

Petroleum exploration in the Arafura Basin has been restricted to the Goulburn Graben, a dominant central feature within the basin. The graben is over 350 km long and up to 70 km wide, containing a highly deformed sedimentary fill of up to 10 km. To date a total of nine wells have been drilled in the region which test a variety of structural and stratigraphic play types. No commercial discoveries have been made. The most significant drilling result is an oil and gas show in Arafura-1. A review of drilling results has identified a number of exploration risks in the basin: 1) poor quality reservoirs in the Palaeozoic and/or restricted fluid movement; 2) hydrocarbon charge and timing of events; and 3) breach of structure. Most of these issues are related to a Triassic contractional event that caused uplift and erosion. Despite these risks, significant petroleum potential remains for the Arafura Basin as a whole. Firstly the identified risk factors may not apply to the undrilled northern part of the basin, which is the basin depocentre. Secondly, there is strong evidence for viable petroleum systems with source, reservoir and seal rocks present in the sedimentary succession. Evidence for active source rocks is provided by numerous hydrocarbon indications in the wells, including oil shows and bitumen in Arafura-1 and Goulburn-1. Analysis of these shows indicates a probable Cambrian source and there is evidence of significant vertical migration of fluids, with Cambrian oil signatures throughout the Palaeozoic sections. With high quality reservoirs (>20% porosity) and a regional seal, potential exists for accumulations within the overlying Money Shoal Basin. Given the limited petroleum exploration in the Arafura Basin, there remains considerable untested potential in both the Goulburn Graben and the unexplored northern region.

2009 in Review of Autralia's Energy Supply

The Vulcan Graben airborne laser fluorosensor (ALF) survey is located in the Vulcan Sub-basin, Timor Sea. The survey was flown on December 2nd 1996. 149 lines were acquired at 300 m spacing in a NW-SE orientation. A total of 1,569,074 spectra were collected at an average spacing of 1.45 m to 1.65 m.Of the 183 fluors picked during the refined interpretation, 70 were large fluors with a F/R ratio larger then 0.3. Some of the fluor clusters may be related to leakage from the Skua Field and Spruce Prospect although direct correlation between fluor clusters and accumulations are not reliable. The fluorescence peak wavelength tends to move to longer values moving from the NE to the SW.

This Oil and Gas Resources of Australia 2009 publication is the successor to Oil and Gas Resources of Australia 2008 and continues as the definitive reference on exploration, development and production of Australia's petroleum resources. The tables describe: - wells drilled - seismic surveys - petroleum discoveries - petroleum reserves - production and development, including forecasts of crude oil and condensate form 2010 to 2025 and a listing of offshore facilities

The Timor Sea airborne laser fluorosensor (ALF) MkII survey was flown in 1994 by BP over the western Bonaparte Basin (Vulcan Sub-basin and Nancar Trough). 65 lines were acquired at 5,000m spacing in a NW-SE orientation. A total of 436,972 spectra were collected at an average spacing of 14.9m to 20.3m. Each recorded spectrum is the average of ten detected spectra. The strongest fluors found on the Timor Sea MkII ALF survey were located over the Jabiru Field. The anomalous intensity and distribution of these fluors suggests they are related to the field development rather than natural oil seepage. Apart from the Jabiru anomaly, the fluorescence response was very weak over the rest of the survey area. The 5km line spacing is not sufficiently close to detect most fluor clusters. The line spacing of 300m used on the nearby MkIII ALF survey over the Skua field was only just sufficient to detect the fluor cluster lying near that accumulation. The Timor Sea ALF MkII data is probably not suitable for identifying the isolated, low intensity fluors usually detectable on ALF MkII surveys in the region.

Legacy product - no abstract available

Paper supporting presentation of the 2007 Offshore Petroleum Explroation AReas at the Australian Petroleum Production and Exploration Association (APPEA) Conference, Adelaide, 16th April 2007.