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PESA ETSIG/CSIRO CCS Knowledge Transfer Series: Installment 3

Tuesday, 31 October, 2023 @ 11:00 am - 12:00 pm (Australia/Perth time)

Free – $10.00

To view the event video and associated handouts (if any), please either log in to your active PESA membership account or enter the event password you received when you registered for this event.

Guest Speaker(s): Jonathan Ennis-King

Dr Jonathan Ennis-King is a prinicpal senior research scientist with CSIRO Energy. He received a BSc with first class honours in Mathematics from the University of Melbourne in 1988, and a PhD in Applied Mathematics from the Australian National University (1989-1993). He subsequently held postdoctoral positions at the University of Melbourne (1993-5), Lund University, Sweden (1996-7) and the Australian National University (1998-9). During this period he worked in the field of theoretical physical chemistry, with research into surface forces, colloids, polymers, polyelectrolytes and non-equilibrium statistical mechanics. He joined CSIRO in 1999 to work on the geological storage of carbon dioxide. His general research interests are in the modeling and simulation of multiphase flow in porous media, and the coupling of that flow to thermal, mechanical and chemical processes. He has specifically applied this to understanding the behaviour of carbon dixoide in the subsurface, especially over long time-frames where density-driven convection can be significant. He has had a key role in the reservoir engineering and simulation of the CO2CRC’s Otway project, the first demonstration of underground storage of carbon dioxide in Australia. Since 2019 he has also begun to investigate the potential for underground hydrogen storage.

PESA ETSIG/CSIRO CCS Knowledge Transfer Series: Installment 3

The PESA Energy Transition Special Interest Group (ETSIG), in conjunction with CSIRO, is running the “CCS Knowledge Transfer Series” which aims to cover geological and geophysical aspects of CCS, focusing on the differences from oil and gas operations.

Further information about the series can be found here:

https://pesa.com.au/events/etsig-csiro-ccs-knowledge-transfer-series/2023-09-05/

 

Kindly supported by:

 

This live webinar will take place at:

11am              – Perth
12.30pm       – Darwin
1pm                – Brisbane
1:30pm          – Adelaide
2pm                – Canberra, Hobart, Melbourne, Sydney

 

Use the calendar link on this page to add this event in to your own calendar at the correct local time for your location.

Tickets are free for PESA members (please log in to see this), free for members of the AGA, SPE, AAPG (Asia-Pacific) and the EAGE (Asia-Pacific).  Tickets for non-members are $10 per episode.

Please buy your tickets and immediately follow the link in the ticket e-mail (not the calendar invite or this webpage, which is just generic and not event specific) to set up your registration with the webinar software well in advance of the time of the talk. Once registered with the webinar software you will receive a reminder e-mail 1 hour beforehand.

 

 

CCS Knowledge Transfer Series: Installment 3

Reservoir Engineering and Simulation for CCS – Jonathan Ennis-King (CSIRO)

Abstract

The practice of reservoir engineering and simulation in CCS begins with the standard physics of multiphase flow in porous media, but with CO2-specific properties to be represented, especially the solubility of CO2 in brine and the matching changes in brine density, and relative permeability effects. Four major code comparison studies have been carried out over the last twenty years, mostly to cross-validate simulator performance (of both people and software), as well as the most recent comparison with laboratory experiments.

The questions addressed by CCS simulation are quite distinct from most hydrocarbon recovery work: one is modelling large volumes of CO2 injection (millions of tonnes) into saline formations, where the resulting CO2 plume migrates laterally over distances of kilometres, and in timeframes of up to a thousand years after injection ceases. Feasibility studies need to address the range of uncertainties in the plume footprint, which stem from the uncertainties in geological characterisation of surface topography, sub-seismic faults, and permeability heterogeneity both laterally and vertically. The pressures increase due to injection may necessitate the design of relief wells. Simulations are needed to design monitoring and verification plans, and to interpret the data which is gathered. Regulatory compliance requires forward predictions of plume evolution, which can be checked against monitoring results to ensure the CO2 is ‘behaving as predicted’. It may also be necessary to assess the risk of CO2 injection affecting other resources, such as groundwater, hydrocarbons, geothermal or storage projects (for natural gas or hydrogen).

The least conventional aspects of CCS simulation involve the coupling of fluid flow to additional physics. Thermal effects are important in the wellbore and the near-well environment, with the cooling effects of injection reducing the maximum allowable injection pressure. Geochemical interactions with the reservoir rock or seal can potentially aid storage by mineralising CO2, and this is the focus of in-situ carbonation research. Injection can also induce seismicity, and this potential can be modelled as well as monitored during operations. Finally, the rise of artificial intelligence and machine learning has prompted research into ways to accelerate the modelling process and allow fast history-matching.

Overall, CCS provides many fascinating challenges for subsurface modelling, and the scope for this work is likely to expand significantly in Australia as more projects progress through feasibility studies towards implementation.

Details

Date:
Tuesday, 31 October, 2023
Time:
11:00 am - 12:00 pm
(Australia/Perth time)
Cost:
Free – $10.00
Event Categories:
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