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|Title:||Definition of the Beetaloo Sub-basin|
|Report ID:||NTGS Record 2019-015|
|Drillhole/Well Name:||Altree 2; Balmain 1; Birdum Creek 1; Broadmere 1; Burdo 1; Chanin 1; Elliott 1; Hidden Valley S2; Jamison 1; Manbulloo S1; McManus 1; Ronald 1; Sever 1; Shortland 1; Tanumbirini 1; Tarlee S3; Walton 2; Wyworrie 1|
|COREDAT ID:||1825; 1833; 4552; 1845; 1849; 1870; 1908; 4480; 1937; 4474; 1973; 2009; 2014; 4295; 4513; 4497; 2053; 4560|
|Geological Province:||McArthur Basin|
|Abstract:||The Beetaloo Sub-basin is a 28 000 km2, completely subsurface, composite depocentre located in northern central Northern Territory and centred on the rural township of Daly Waters, ~300 km south-southeast of Katherine. The sub-basin is one of the principle depocentres of the southern McArthur Basin. It contains an interpreted 9000 m thickness of sedimentary and minor volcanic rocks assigned to the following stratigraphic groups or their equivalents: the Palaeoproterozoic Tawallah and McArthur groups, and the Mesoproterozoic Nathan and Roper groups. The sub-basin is of considerable economic interest as a potential host for unconventional and conventional petroleum resources, particularly in the uppermost Roper Group. In 2017, following industry acquisition of new seismic data and the drilling of a number of strategically positioned stratigraphic wells, the Northern Territory Geological Survey undertook a thorough geological interpretation of the sub-basin's extent using open file seismic survey data and petroleum well completion reports. This resulted in a new basin boundary that is constrained by lithostratigraphic data from 26 wells tied to stratigraphic interpretations of 96 seismic surveys.|
It is important to note that this new boundary does not represent the extents of hydrocarbon potential in the region. It is a geological interpretation that represents the subsurface Mesozoic stratigraphic succession as completely as possible. Hydrocarbon plays have been identified beyond the extents of this new boundary definition.
|Publisher:||Northern Territory Geological Survey|
|Document Type:||NTGS Record|
|Access Constraint:||Creative Commons Attribution 4.0 International (CC BY 4.0). Please observe and retain any copyright or related notices that accompany this material and give attribution to: Northern Territory of Australia (Northern Territory Geological Survey).|
|Appears in Collections:||Reports, Records, Books|
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