Bowen-Surat Basin

About this study area

The Bowen and Surat Basins are pair of stacked basins covering respectively ~160,000 and ~300,000 square kilometres of eastern Queensland and northern New South Wales. The Surat Basin unconformably overlies a significant portion of the southern Bowen Basin, hence their stratigraphy is often considered as a single Permian to Cretaceous package, which has not undergone any significant tectonic deformation or inversion.

Regional Structural Permeability Maps

These maps present three potential permeability maps based on shallow, intermediate, or steeply dipping faults.

Shallow Dipping Faults

This permeability map uses the FAST geomechanical risking method to determine the permeability likelihood of faults assumed to have shallow dip angles.

Moderately Dipping Faults

This permeability map uses the FAST geomechanical risking method to determine the permeability likelihood of faults assumed to have moderate dip angles.

Steeply Dipping Faults

This permeability map uses the FAST geomechanical risking method to determine the permeability likelihood of faults assumed to have steep dip angles.

Further Data

In addition to FAST fault maps, we also present maps of FAST geomechanical risking of fractures identified in 3D seismic surveys, and wellbore image logs.

Seismic Survey Fracture Maps

Fractures and sub-seismic scale faults were identified using a variety of seismic processing methods at ~3 km depth in the Myall 3D and Overston 3D seismic surveys. These structures were then geomechanically risked to test their reactivation likelihood using FAST.

Wellbore Image Log Data

Resistivity image logs produce a pseudo-image of the wellbore wall, allowing for the identification of fractures, both resistive (closed), and conductive (open). These can then be plotted on a FAST reactivation likelihood plot.