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X-WR-CALDESC:Events for PESA - Energy Geoscience
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TZID:Australia/Brisbane
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DTSTART:20250101T000000
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DTSTART;TZID=Australia/Brisbane:20260625T120000
DTEND;TZID=Australia/Brisbane:20260625T143000
DTSTAMP:20260605T123930
CREATED:20260604T225523Z
LAST-MODIFIED:20260604T225523Z
UID:10008789-1782388800-1782397800@pesa.com.au
SUMMARY:PESA QLD: Structural Controls on Aquifer Connectivity in the Great Artesian Basin\, Narrabri
DESCRIPTION:PESA QLD June Luncheon\n\nGeological structures and aquifer connectivity in the Great Artesian Basin and underlying Permian-Triassic basins: insights from airborne electromagnetic surveys\, hydrochemistry and environmental tracers at Narrabri\, NSW\nPresented by: Dr Matthias Raiber\n(Principal Research Scientist at CSIRO)\n  \nAbstract: \nIn the Narrabri region\, understanding connectivity between coal seam gas (CSG) reservoirs and overlying aquifers is important for assessing potential groundwater impacts and addressing community concerns\, given that the Gunnedah Basin\, which hosts the coal seams\, underlies key Great Artesian Basin (GAB) units such as the Pilliga Sandstone. \nThis study applies an integrated workflow combining airborne electromagnetics (SkyTEM)\, seismic interpretation\, K/Ar dating of igneous intrusions\, and hydrochemical and environmental tracer datasets (including noble gases and groundwater age tracers). The SkyTEM survey (~2\,765 line km; >60 flight lines) provides high-resolution constraints on subsurface architecture\, enabling mapping of faults\, intrusions\, and key stratigraphic boundaries to ~400 m depth. \nAEM results and K/Ar ages of intrusive activity were integrated with seismic and geological data to develop conceptual hydrogeological models identifying potential connectivity pathways. Hydrochemical and tracer data were then used to test for evidence of hydraulic connection across formations and basins\, allowing structural interpretations to be evaluated against groundwater signatures. \nResults indicate that geological structures are widespread\, but their hydraulic significance and therefore their potential influence on connectivity varies across the study area. \nThe presentation focuses on the Narrabri Gas Project area while also addressing broader GAB connectivity questions. The integrated workflow provides a transferable framework for reducing uncertainty in subsurface fluid flow\, with relevance to hydrocarbon studies\, hydrogen storage\, Carbon Capture and Storage (CCS)\, and related applications. \n  \nEvent Details:\nDate: Thursday\, June 25th 2026 \nLuncheon: 12 pm for a 12:30 pm start \nPlace: Stamford Plaza Brisbane \nBookings close 5 pm Tuesday\, June 23rd 2026 unless sold out prior. \n 
URL:https://pesa.com.au/events/pesa-qld-structural-controls-on-aquifer-connectivity-in-the-great-artesian-basin-narrabri/
LOCATION:Stamford Plaza Brisbane\, 39 Edward St\, Brisbane QLD\, Brisbane\, 4000\, Australia
CATEGORIES:QLD,Technical Lunch,Technical Talk
ORGANIZER;CN="PESA QLD":MAILTO:qld-treasurer@pesa.com.au
GEO:-27.4714163;153.0303949
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Stamford Plaza Brisbane 39 Edward St Brisbane QLD Brisbane 4000 Australia;X-APPLE-RADIUS=500;X-TITLE=39 Edward St:geo:153.0303949,-27.4714163
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