Trap integrity studies - a tool to reduce exploration risk in the offshore northern Perth Basin  


Authors / CoAuthors

Nicholson, C. | Langhi, L. | Zhang, Y. | Rollet, N. | Bernardel, G.

Abstract

A collaborative trap integrity study between CSIRO and Geoscience Australia evaluated the potential of fault reactivation as a critical exploration risk for hydrocarbon preservation in the Abrolhos Sub-basin. The study is part of a reassessment of the petroleum prospectivity of the offshore northern Perth Basin initiated under the Australian Government's Offshore Energy Security Program. Information on this assessment and a related hydrocarbon seepage survey can be found in AusGeoNews Sep11, issue 103 and AusGeoNews In Brief Dec 11. This study focused on several drilled prospects which are covered by 3D seismic data and contain both breached and preserved oil columns all sourced and sealed by the Triassic Kockatea Shale (Figure 1). Three-dimensional (3D) coupled deformation and fluid-flow numerical modelling has been used to simulate the response of trap-bounding faults to Jurassic-Early Cretaceous NW-SE extensional reactivation in these prospects and, therefore, to investigate hydrocarbon preservation risk in the Abrolhos Sub-basin during this time. The regional trap integrity analysis results are documented in a CSIRO report (link).

Product Type

nonGeographicDataset

eCat Id

73338

Contact for the resource

  Custodian

ED  

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

  • GA Publication
( Theme )
  • petroleum exploration
( Theme )
  • risk assessment
( Theme )
  • structural geology
( Theme )
  • marine
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Earth Sciences
  • Published_Internal

Publication Date

2012-01-31T00:00:00

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Australian Government Security ClassificationSystem    

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Creative Commons Attribution 4.0 International Licence    

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geoscientificInformation

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