FESAus

About FESAus

FESAus, the Formation Evaluation Society of Australia, is the Australian chapter of the Society of Petrophysicists and Well Log Analysts (SPWLA).

Its aims are to provide a technical monthly forum for geoscientists focused on all aspects of formation evaluation, from new tools available to new techniques and approaches to analysing reservoirs, and to encourage formation evaluation professionals to network. In line with the founding principles of the SPWLA, FESAus is a non-profit organization dedicated to the advancement of the science of Petrophysics and Formation Evaluation, including well logging, coring, and other formation evaluation techniques and to the application of these techniques to the exploitation of gas, oil and other minerals, particularly in Australia.

Upcoming Events:

FESAus’ March Technical Meeting in Perth:
“Petrophysical Methods for the Evaluation of Fluid Volumes & Types”

by Michel Claverie (Petrophysics & Geoscience Consultant)

Abstract: The first part of this presentation will provide strategies for the best use of multiple petrophysical measurements towards the evaluation of fluids volumes and types – in low-resistivity & low-resistivity-contrast sandstone reservoirs, carbonate reservoirs and unconventional hydrocarbon reservoirs. The recommendations will be presented in the form of easy-to-use tables.

In the second part, we will review applications of each of these measurements, some of them within an unexpected environment.

To conclude, Michel will offer guidelines for handling the uncertainty and the value of information of petrophysical measurements and will share a few thoughts about machine learning.

Please feel free to share this invitation with any colleagues keen to join us in person or online.

FESAus 2026 committee.

Tues 10th March, 2026 | 12:00-13:30 | The Stateroom, Faraday’s Perth, 216 St Georges Tce, Perth WA 6000

Tickets: In Person $30.00 | Online $10; Purchase here from now until 6th March, no tickets will be available at the venue.

•Tickets may be transferred to another person up until the start of the event.

POSTPONED (date TBC):
FESAus’ Technical Meeting in Perth:
“The Physics and Petrophysics of Hydrogen”

by Martin Kennedy (MSK Scientific Consultants)

Abstract: This is a wide-ranging and general introduction to the formation, occurrence, detection and characterisation of free Hydrogen gas in the sub-surface.
The increasing use of hydrogen as a fuel, in addition to its well established role as an industrial re-agent, means that demand is rapidly rising. That has spawned several exploration projects around the world actively looking for commercial accumulations of natural hydrogen (so-called ‘Gold’ or ‘White’ Hydrogen). Regardless, of whether these efforts are ultimately successful it is likely that large volumes of hydrogen will need to be stored in underground traps in much the same way as natural gas. Whether the hydrogen has accumulated naturally or has been injected into a storage facility, Petrophysics is needed to characterise these traps and monitor the distribution of the hydrogen. By and large the same tools and techniques are used to characterise the reservoir and seal as in any oil or gas field but of course hydrogen replaces petroleum. Hydrogen has significantly different properties to methane let alone oil and the way that logs respond to hydrogen and the way that hydrogen is expected to behave in a trap will be discussed in the talk.
Unlike petroleum, the source rocks for natural hydrogen are not organic sedimentary rocks, but rather iron-rich basement rocks. The characterisation of these requires entirely different tools and techniques than for petroleum source rocks. In particular the geochemical log is likely to be important for even a semi-quantitative analysis of source potential. Log analysis of these rocks is at an early stage of development but some examples of what can and cannot be inferred from logs will be shown.
Please feel free to share this invitation with any colleagues keen to join us in person or online.

Date TBC