Project Summary

The South West Hub project is now entering an evaluation stage, aimed at reducing uncertainties related to the distribution of properties of the targeted subsurface formations.

Currently, data is sparse and more confidence is needed is the storage potential for the basin. Ambiguities are particularly evident in the following aspects of the subsurface basin characterisation:

  • Diagenetic history of the sediments and how diagenesis affected the pore space and therefore the injectivity and storage potential of the targeted units;
  • Current and past nature of the formation fluids and reservoir compartmentalisation between the different fault blocks identified in the subsurface of the SW-Hub;
  • Seismic constraints on the petrophysical character of the Lesueur Sandstone;
  • Geomechanical properties of the storage reservoir and overlying units.

Available Reports

The Lesueur: Deposition, Rocks, Facies, Properties

This project delivers more information on the structure of the Lesueur storage complex, on which data was previously sparse. Researchers looked at the diagenetic history of the sediments and how this affected pore space and subsequent injectivity and storage potential. They studied the current and past nature of the formation fluids and reservoir compartmentalisation between the different fault blocks. Seismic constraints on the petrophysical character of the Lesueur Sandstone was also studied, along with geomechanical properties of the storage reservoir and overlying units. Researchers concluded that investigations in areas including sedimentary facies, reservoir diagenesis and formation salinity identified no issues that might suggest postponing or cancelling further investigations around the feasibility of the South Perth Basin geosequestration site

Project Name:
The Lesueur: Deposition, Rocks, Facies, Properties

Research Organisation:
CSIRO

Status:
Completed, 2018

Authors:
C Delle Piane

Reference:
7-0115-0240

Research Program: Carbon Transport + Storage
Demonstration: Southern Perth Basin
Research Focus: geomechanics fault fracture well bore, Containment, Leakage risks and fluxes, Rock Properties Relative Perm

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