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Integration of high-resolution HyLogger3 spectral scanner and TESCAN Integrated Mineral Analyser for mineralogical characterisation of shale
- Publication Name: AEGC 2021
- Authors: Muhammad Atif Iqbal, Reza Rezaee, Gregory Smith, Hasnain Ali Bangash
- Date Published: September 2021
Abstract:
The mineralogy of shales is a fundamental parameter because it directly influences petrophysical and geomechanical properties. However, thick shales comprise a heterogeneous succession of very fine-grained strata in which only some thin beds are opti...
Northern Lawn Hill Platform – modelling the ‘great-grandparent’ emerging region
- Publication Name: AEGC 2021
- Authors: Tehani Palu, Amber Jarrett, Susannah MacFarlane, Christopher Boreham, Barry Bradshaw
- Date Published: September 2021
Abstract:
The northern Lawn Hill Platform (nLHP) of the Isa Superbasin, far northwest Queensland is currently considered an emerging region and is an area of renewed interest for unconventional gas. Petroleum systems analysis presented here will improve the un...
Magnetic characterisation of the Osborne IOCG: magnetic fabrics, self-demagnetisation, and remanence: Cloncurry District, QLD
- Publication Name: AEGC 2021
- Authors: Andreas Bjork, Jim Austin, Helen McFarlane
- Date Published: September 2021
Abstract:
Integrated petrophysics linked with structural geology and mineralogy are powerful tools for mineral system characterisation. In this study, open-pit samples and drill core from the Osborne IOCG deposit were measured for anisotropy of magnetic suscep...
Reversible Jump Sequential Monte Carlo for Model Inference in Airborne Induced Polarisation
- Publication Name: AEGC 2021
- Authors: Laurence Davies, Christopher Drovandi, Matthew Sutton, Alan Yusen Ley-Cooper
- Date Published: September 2021
Abstract:
Exact methods of Bayesian model selection require exhaustive computation of normalising constants or sampling of the joint posterior of parameters and models via reversible jump Markov chain Monte Carlo (RJMCMC). Until recently, the latter has been f...
Earthquake monitoring in the Southwest Seismic Zone, Western Australia
- Publication Name: AEGC 2021
- Authors: Ruth E Murdie, Lucy Brisbout, Hugh Glanville, Trevor Allen, Vic Dent
- Date Published: September 2021
Abstract:
The southwest Yilgarn Craton, in Western Australia is one of the most seismogenic areas of mainland Australia. There are many small earthquakes happening daily and the occasional larger earthquake such as the destructive Meckering (M6.6) earthquake o...
The North Australian Craton 3D Gravity and Magnetic Inversion Models – A trial for first pass modelling of the entire continent
- Publication Name: AEGC 2021
- Authors: James A Goodwin, Richard J L Lane
- Date Published: September 2021
Abstract:
As part of the Federal Government’s Exploring for the Future program, whole-of-crust 3D gravity and magnetic inversion models have been produced for an area encompassing the North Australia Craton (NAC). These models were created to aid 3D geologic...
The Winu-Ngapakarra deposit in the Great Sandy Desert of Western Australia, a Neoproterozoic Intrusion-related Cu-Au-Ag deposit
- Publication Name: AEGC 2021
- Authors: Hilke Dalstra, Adam Black, Inna Mudrovska
- Date Published: September 2021
Abstract:
The Winu Cu-Au-Ag deposit was discovered in late 2017 and is hosted in metamorphosed sandstones and siltstones and lesser mafic rocks which are most likely correlatives of the upper Malu Formation of the Yeneena Basin. The deposit structure is domina...
In-situ stress pattern along the Jellinbah Fold Thrust Belt in the Bowen Basin, Australia
- Publication Name: AEGC 2021
- Authors: Saswata Mukherjee, Mojtaba Rajabi, Joan Esterle, Renate Sliwa
- Date Published: September 2021
Abstract:
The Permo-Triassic Bowen Basin hosts numerous thick coal seams, and it is a prolific basin for coal mining and gas production. The development of coal seam gas (CSG) reservoirs in different parts of the Bowen Basin emphasizes the potentiality of the ...
How deep does ground EM see?
- Publication Name: AEGC 2021
- Authors: Andrew Fitzpatrick, Mike Whitford, Antonio Huizi
- Date Published: September 2021
Abstract:
Nickel exploration routinely utilises electromagnetic techniques as a direct detection tool. In the Australian context, conductive regolith dominated terrains reduces the depth of penetration of electromagnetic techniques. Modelling is typically perf...
Quantifying Uplift using Decompaction: A case study from the Exmouth Plateau, North West Shelf
- Publication Name: AEGC 2021
- Authors: Patrick Makuluni, Laurent Langhi, Juerg Hauser, Stuart Clark
- Date Published: September 2021
Abstract:
Uplift events have caused the failure of hydrocarbon seals resulting from subsequent deformation and fault development or reactivation. On the other hand, escaping hydrocarbons from the breached seals may accumulate in new traps, and fracturing of br...
AIP EFFECTS IN AIRBORNE EM FIXED WING SYSTEMS: A SPECTREM THEORETICAL STUDY.
- Publication Name: AEGC 2021
- Authors: Andrea Viezzoli, Francesco Dauti, Nirocca Devkurran, Brad Pitts
- Date Published: September 2021
Abstract:
IP effects can distort airborne EM data, usually producing faster decays and, under certain conditions, changes in signal polarity. These effects, if not recognized and treated with a dispersive resistivity model, often lead to artefacts in the resis...
Probabilistic modelling of groundwater salinity using borehole and airborne electromagnetics (AEM) data
- Publication Name: AEGC 2021
- Authors: Neil Symington, Anandaroop Ray, Chris Harris-Pascal, Kok Piang Tan, Richard Taylor, Yusen Ley-Cooper, Ross C Brodie
- Date Published: September 2021
Abstract:
Groundwater is a critical resource for supporting human consumption, stock water, agricultural use, and mineral or energy extraction as well as the environment. However, the quality of groundwater varies enormously from potable to hyper-saline, parti...
Investigation of old pollution site along the Swan River, Perth, Western Australia using Loupe TEM system
- Publication Name: AEGC 2021
- Authors: Michael A. Hatch, Greg Street, Gavan McGrath, Aaron Davis, Andrew Duncan
- Date Published: September 2021
Abstract:
In this study, data were collected using a new transient-electromagnetic system over an area in Perth, Western Australia, along the Swan River. The site was polluted by industry in the 1960’s and 1970’s, and then remediated by agencies working fo...
Closing the gap between ground and airborne IP data modelling
- Publication Name: AEGC 2021
- Authors: A. Viezzoli, G. Fiandaca
- Date Published: September 2021
Abstract:
Modelling of Induced Polarization in AEM data (AIP) has recently been used more often in exploration. Which demands for more research to address the fundamental question “how does AIP compare to ground IP?”. Beside some of the well-known differen...
New Age Dating of Evaporites in Canning Basin, WA, Australia. A Case Study based on samples from the Frome Rocks Salt Diapir
- Publication Name: AEGC 2021
- Authors: F. McNee, J. Gorter, F. Glass
- Date Published: September 2021
Abstract:
The age of evaporitic units in the Kidson Sub-basin of the Canning Basin have been assigned to be of Late Ordovician to Early Silurian age through the dating of the sedimentary sequences within the Mallowa Salt.
This paper presents an alternative m...
Expanding the reserve base of operating mines: Insights from an airborne MobileMT survey in the Omsukchan depression, Russian Far East
- Publication Name: AEGC 2021
- Authors: Petr Kordi, Alexander Prikhodko, Andrei Bagrianski, Sergei Trushin
- Date Published: September 2021
Abstract:
In the frame of expanding the reserve base for the Omsukchan mining district, an airborne electromagnetic survey was carried out over and around the Dukat silver giant. The initially developed exploration concept was based on weakly investigated deep...
High density seismic finally accessible to all industries
- Publication Name: AEGC 2021
- Authors: Amine Ourabah
- Date Published: September 2021
Abstract:
High density seismic has been synonym of high-quality subsurface images and attributes for more than 2 decades now, and although firstly made available by innovative source technologies, the receiver side was lagging behind with bulky, heavy cables a...
Nonlinear, 2D uncertainty estimation in Magnetotelluric inversion using trans-dimensional Gaussian processes
- Publication Name: AEGC 2021
- Authors: Daniel Blatter, Anandaroop Ray, Kerry Key
- Date Published: September 2021
Abstract:
Bayesian inversion of Magnetotelluric (MT) data produces crucial uncertainty information on inferred subsurface resistivity. Due to their high computational cost, however, Bayesian inverse methods have largely been restricted to 1D resistivity models...
The resistivity structure of the Gidyea Suture and its relationship to the Carpentaria Conductivity Anomaly
- Publication Name: AEGC 2021
- Authors: Janelle Simpson, Dominic Brown, Karen Connors
- Date Published: September 2021
Abstract:
The Gidyea Suture is a structure that lies on the eastern margin of the Mount Isa Province. It was first recognised in deep crustal seismic, and subsequent authors have used magnetotelluric (MT) data to further support its existence. It is considered...
Mapping coal seam roof and floor by using in-seam borehole radar: Results from numerical modelling
- Publication Name: AEGC 2021
- Authors: Binzhong Zhou, Jianjian Huo, Iain Mason, Matthew van de Werken
- Date Published: September 2021
Abstract:
Longwall automation depends on the development of automatic coal seam (horizon) tracking and lateral guidance systems to keep mining the target coal seam while steering to the desired target. While inertial sensing has provided some success for later...
Towards a 3D model of the South-Nicholson Basin region, Northern Australia, for mineral, energy and groundwater assessment
- Publication Name: AEGC 2021
- Authors: Nadege Rollet, Michael Doublier, Chris Southby, et al.
- Date Published: September 2021
Abstract:
The Exploring for the Future Program facilitated the acquisition of major geoscience datasets in northern Australia, where rocks are mostly under cover and the basin evolution, mineral, energy and groundwater resource potential are, in places, poorly...
CRC-P-57322 High-resolution Real-time Airborne Gravimetry
- Publication Name: AEGC 2021
- Authors: Andrew Gabell, Timothy Crain, Glenn D Hines, et al.
- Date Published: September 2021
Abstract:
Airborne gravimetry relies on removing inertial aircraft accelerations from total accelerations measured by an onboard gravimeter. NASA developed a Navigation Doppler Lidar (“NDL”) for the US Space Program. The NDL measures velocities at the 1 mm...
Next-generation velocity model of the Australian crust from synchronous and asynchronous ambient noise imaging
- Publication Name: AEGC 2021
- Authors: Yunfeng Chen, Erdinc Saygin
- Date Published: September 2021
Abstract:
The proliferation of seismic networks in Australia has laid the groundwork for improved probing of the continental crust. In this study, we develop a new crustal model of the Australian continent using a large dataset that consists of nearly 30 years...
Practical aspects of wavefield decomposition for permanent seismic rotatory sources
- Publication Name: AEGC 2021
- Authors: Roman Isaenkov, Sinem Yavuz, Roman Pevzner, Konstantin Tertyshnikov, Julia Correa, Barry Freifeld
- Date Published: September 2021
Abstract:
Continuous reservoir surveillance requires permanent seismic sources. One such source is a seismic orbital vibrator (SOV). An SOV excites a circularly polarised seismic signal by the rotation of an eccentric mass alternately clockwise and counter-clo...
Automated facies classification in borehole log data
- Publication Name: AEGC 2021
- Authors: Roman Beloborodov, James Gunning, et al.
- Date Published: September 2021
Abstract:
Seismic facies inversion relies on accurate facies-specific elastic parameter models determined from borehole log data. Typically, velocity depth trends and corresponding standard errors are manually determined for each of the facies by using cross-p...
Impacts of Uncertainty in Minimum Horizontal Stress Determination on Wellbore Stability
- Publication Name: AEGC 2021
- Authors: Matthew Musolino, Simon Holford, Rosalind King
- Date Published: September 2021
Abstract:
The purpose of this study is to highlight sources of uncertainty in the determination of minimum horizontal stress estimates from leak-off tests (LOTs) and their effect on wellbore stability modelling. To achieve this, we use petroleum datasets from ...
Petroleum Source Rocks, Generation and Primary Migration: insights using new direct nano-scale Tof-Sims SEM analysis and Re-Os radiometric dating
- Publication Name: AEGC 2021
- Authors: Greg Smith, William Rickard, Zhen Li, Svetlana Tessalina
- Date Published: September 2021
Abstract:
Exactly how maturation, generation and primary migration in and from source rocks works at the nano-scale remains largely a mystery. The theories and concepts rely mostly on destructive analytical techniques that by their nature do not allow direct o...
Constraining regional-scale groundwater transport predictions using multiple geophysical techniques
- Publication Name: AEGC 2021
- Authors: Chris Li, Rebecca Doble, Michael Hatch, Graham Heinson, Ben Kay
- Date Published: September 2021
Abstract:
Due to often spatially discontinuous and sparse datasets from traditional geohydrological techniques, it is becoming more common to incorporate geophysical data in groundwater models. Not only are the geophysical data sets more continuous, but they c...
Laboratory study of temperature variation effects on Distributed Acoustic Sensing measurements
- Publication Name: AEGC 2021
- Authors: Sidenko E., Pevzner R., Tertyshnikov K. and Lebedev M.
- Date Published: September 2021
Abstract:
Fibre-Optic sensing is being actively used nowadays in various exploration and monitoring applications. Distributed Temperature Sensing (DTS) is used for measurements and monitoring of the temperature. Distributed Acoustic Sensing (DAS) is used to re...
Controls on organic matter accumulation in the Mesoproterozoic: Insights from the stratigraphic modelling of the Velkerri Formation of the Beetaloo Basin (Northern Territory, Australia)
- Publication Name: AEGC 2021
- Authors: Vincent Crombez, Mohinudeen Faiz, Claudio Delle Piane, Marcus Kunzmann
- Date Published: September 2021
Abstract:
The ability to understand and predict the distribution of the primary organic content in a basin is key when exploring for unconventional hydrocarbons. Many pathways lead to the formation of organic-rich rocks through combinations of primary producti...