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PESA WA December Young Professionals Speakers Night

Monday, 2 December, 2019 @ 5:30 pm - 7:00 pm (Australia/Sydney time)

This Event is Proudly Sponsored by TGS:

PESA WA invites you to their December Young Professionals Speaker Night. This is the perfect opportunity to socialise with your industry peers and enjoy two technical talks given by Jerome Paz (Chemostrat) and Guillaume Rongier (CSIRO).

Talk 1: Jerome Paz


Chemostratigraphy in the McArthur-Beetaloo Basin: more than just correlation



The McArthur-Beetaloo Basin in the Northern Territory contains a Paleo to Mid-Proterozoic sedimentary succession which is of interest as a potential new unconventional gas play. Its stratigraphic nomenclature has been subject to revision in recent years, in particular to sub-divide shale lithologies such as the Velkerri and Kyalla Formations, which appear broadly homogenous. In a basin that pre-dates standard biostratigraphy records, analysing the variations in elemental compositions of these shales may provide new stratigraphic sub-divisions as well as insights into depositional environments and physical rock properties.


Jerome obtained a Bachelor of Science (Applied Geology) with Honours from Curtin University in 2017. Before joining Chemostrat in June, he interned at Chevron Australia and worked in the research division at investment bank, Euroz Securities. He has worked across several North West Shelf basins, the Northern Territory’s McArthur Basin, and New Zealand’s Taranaki Basin. He has undertaken projects from basin-scale seismic interpretation to field reservoir characterisation.

Talk 2: Guillaume Rongier

Exploring how rivers and their deposits distort estimates of aquifer recharge using numerical simulations


Deposits from meandering rivers contribute to the heterogeneity of the subsurface by channeling or diverting groundwater flow. We propose to analyze how the evolution of a river affects this relationship and ultimately can distort estimates of recharge rates in aquifers. We use the fluvial and stratigraphic modules of the Channel-Hillslope Integrated Landscape Development Model (CHILD) to simulate the evolution and deposits of a meandering river. Then, we use PFLOTRAN to simulate subsurface flow and groundwater age based on a homogeneous recharge from the top. Groundwater age is a key concept from which recharge rates can be estimated using analytical models. Varying aggradation or incision rates of the river lead to heterogeneous channel belts with varying distributions of coarse deposits. If the channel belt itself funnels the flow, its heterogeneities lead to heterogeneous groundwater ages, even at short distances. This results in varying estimates of recharge rate over the domain and a significant bias even when sampling the subsurface with many wells.


Guillaume Rongier received a Ph.D. in geoscience from the University of Lorraine in France and the University of Neuchâtel in Switzerland in 2016. His work has focused on modeling the subsurface while accounting for uncertainties, with further interest for sedimentary channels. He now works at CSIRO Deep Earth Imaging Future Science Platform on using landscape evolution models in subsurface modeling.


Event Details:

Date: Monday, 2nd December 2019 [5:30-7:00pm].
Venue: Mayfair Lane – 72 Outram St, West Perth.
Food will be provided.


Ticket Prices:

Free: Please register for catering purposes. Nibbles will be provided.


This event is exclusively for Young Professionals (Young Professionals under the age of 35), so come along if you’re a student, graduate or working professional. Meeting your petroleum peers is a good chance to talk about your different background, experiences, projects and companies with like-minded people in a very laid back and friendly setting.




Monday, 2 December, 2019
5:30 pm - 7:00 pm
(Australia/Sydney time)
Event Categories:
  • Venue

    Mayfair Lane
    72 Outram Street
    West Perth, WA 6005 Australia
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