Mapping Northern Australia’s Present Day Stress Field: The Canning Basin

Adam Bailey; Paul Henson

doi:10.1071/ASEG2018abM1_2B

1st Australasian Exploration Geoscience Conference – Exploration Innovation Integration

ISSN: 2202-0586
E-ISSN:

oa Mapping Northern Australia’s Present Day Stress Field: The Canning Basin
Authors Adam Bailey^a and Paul Henson^b
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^a Geoscience Australia, Canberra, , ACT, [email protected] ^b Geoscience Australia, Canberra, , ACT, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2018, Issue 1st Australasian Exploration Geoscience Conference – Exploration Innovation Integration, Dec 2018, p. 1 - 6
DOI: https://doi.org/10.1071/ASEG2018abM1_2B
- Published online: 01 Dec 2018

Abstract

The Canning Basin of Western Australia has recently become a site of interest for unconventional hydrocarbons, with several formations within deeper basin depocentres being investigated for resources. Modern petroleum resource evaluation is generally dependent on an understanding of both local and regional stresses, as well as the geomechanical properties of reservoir units. Presently, there are significant gaps in our understanding of these factors within the Canning Basin. This study is part of a greater effort from Geoscience Australia to understand the present-day stress field of northern Australia.

A generally NE-SW oriented maximum horizontal stress azimuth is identified from interpretation of borehole failure in five petroleum wells, and a broadly strike-slip faulting stress regime is interpreted from wireline data and wellbore testing. Variations in stress regime at different crustal levels within the Canning Basin are highlighted by one-dimensional mechanical earth models that show changes in the stress regime with depth as well as by lithology, with a general move towards a normal faulting stress regime at depths greater than ~2.5 km.

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/content/journals/10.1071/ASEG2018abM1_2B

Article Type: Research Article

Keyword(s): Canning Basin; image logs; present-day stresses; rock mechanics; unconventional petroleum

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