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Drones as a support tool for seismic acquisition
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Shaun Strong. Jason Stephenson
- Date Published: September 2019
Abstract:
The availability of relatively inexpensive UAVs in the form of drones provides many opportunities for seismic exploration.
While government regulations still provide many restrictions in this space, this trial has demonstrated that significa...
Indicator minerals for magmatic sulfide mineralisation
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Louise Schoneveld*, Steve Barnes, Margaux LeVaillant, Valentina Taranovic
- Date Published: September 2019
Abstract:
Small conduit or chonolith style intrusions dominated by olivine- and pyroxene-rich cumulates are well known to be favourable hosts to magmatic Ni-Cu-(PGE) sulfide mineralization. In many cases, such mineralization is closely associated with partiall...
Overpressure transmission through igneous intrusions: An unrecognized drilling hazard in volcanic affected basins?
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Nick Schofield*, Simon Holford, Alex Edwards
- Date Published: September 2019
Abstract:
In situ overpressures in sedimentary basins are commonly attributed to disequilibrium compaction or fluid expansion mechanisms, though overpressures in shallow sedimentary sequences may also develop by vertical transfer of pressure from deeper basin ...
3D inversion of electromagnetic logging-while-drilling data
- Publication Name: Australasian Exploration Geoscience Conference
- Authors: David Marchant*, Nigel Clegg, Luke Rawsthorne, Jari Kunnas
- Date Published: September 2019
Abstract:
Electromagnetic logging while drilling is commonly used to infer information about the electrical properties around the wellbore and to aid in geosteering. Data from modern tools, which combine multiple transmitter and receiver orientations and offse...
The Bight Basin, evolution and prospectivity II; seismic, structure and balanced sections
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Kevin C Hill*, Jane Cunneen, Rebecca Farrington
- Date Published: September 2019
Abstract:
A regional, high-quality seismic traverse from the coast to oceanic crust across the Bight Basin has been assembled and interpreted in detail, then balanced, restored, decompacted and replaced at paleo-water depths. The Late Cretaceous Ceduna Delta d...
Co-operative inversion of geoelectrical data sets acquired from different electrode arrays
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Duy Thong Kieu*, Thi Chinh Truong
- Date Published: September 2019
Abstract:
Direct current resistivity (DCR) method is one of the most commonly applied geophysical exploration methods. The development of data acquisition techniques enables the acquisition of multiple data sets of various electrode arrays with a little extra ...
Maximising value from seismic using new data and information management technologies
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jess B. Kozman*, Matthew Holsgrove
- Date Published: September 2019
Abstract:
Geophysical data is one of the key decision support factors for successful discovery of hydrocarbons, and operators have multi-decadal inventories of survey data in key basins. Woodside has a history of exploration in Australia from 1954 and seismic ...
Realtime analysis and well planning using wireline logs in a hydrogeological context
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Benjamin Birt, Olga Filiptsova, Sheryl Ryan, Tim Hopper
- Date Published: September 2019
Abstract:
During the drilling process, numerous decisions must be made, often with limited information. In a known area prior knowledge often guides these decisions. In a recent drilling program in the Northern Perth Basin, as part of a research project to mon...
Backing up the AEM – unravelling a palaeovalley fill for groundwater exploration in the APY Lands
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Carmen Krapf, Adrian Costar, Mark Keppel, Kent Inverarity, Andy Love, Liliana Stoian, Georgina Gordon, Camilla Soerensen, Tim Munday
- Date Published: September 2019
Abstract:
A major constraint on development in the Anangu Pitjantjatjara Yankunytjatjara (APY) Lands is the lack of reliable water supplies. Sandstone strata found within palaeovalleys has long been recognised as potentially productive aquifers in outback Sout...
Gippsland Basin 3D forward modelling in Badlands
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Xuemei Yang, Greg Smith
- Date Published: September 2019
Abstract:
The Gippsland basin geological history is modelled using the Badlands software constrained by a realistic 3D structural and stratigraphic model built in Petrel. The aim is to assess and calibrate the theoretical tectonic and sedimentary models using ...
Managing uncertainty to deliver complex development wells
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Peter van Ruth, Manish Agarwal, Scott Gagen
- Date Published: September 2019
Abstract:
Managing seismic depth uncertainty is a key consideration in placing horizontal development wells into thin reservoir targets. Seismic depth uncertainty has the potential to erode project value through missed reservoir (late landing or reservoir exit...
Moho structure of Australia from probabilistic inversion of teleseismic P-wave coda autocorrelation
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Mehdi Tork Qashqai*, Erdinc Saygin
- Date Published: September 2019
Abstract:
The autocorrelation of the seismic transmission response of a layered medium (autocorrelogram), in the presence of a free surface, corresponds to the reflection response. Despite many studies on the imaging of local structures through retrieval and f...
Structural Setting and Controls on Ni-Cu Sulphide Mineralisation at Nova-Bollinger, Fraser Zone, WA
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jonathan Standing
- Date Published: September 2019
Abstract:
Nova-Bollinger is a structurally modified magmatic Ni-Cu sulphide deposit in which sulphide melt was mechanically extracted from chonolithic intrusions and concentrated into structurally controlled positions within the footwall country rocks. The fer...
Geophysics and neural networks: learning from computer vision
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Mark Grujic, Liam Webb, Tom Carmichael
- Date Published: September 2019
Abstract:
The rapid advancement of computer vision is changing the way many industries approach image analysis. Object detection, image segmentation, textual characterisation and other related processes are helping people extract more meaningful information an...
Pyxis – A study in cost-efficient near-field exploration, discovery and appraisal
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Megan Slade, Peter Thomas
- Date Published: September 2019
Abstract:
Realising and protecting the value of near-field exploration and appraisal is a constant challenge, especially during the recent low oil price cycles. This paper discusses the 2015 Pyxis gas discovery, and the means by which a cost-effective and valu...
Resolving Structural Uncertainty using DAS VSP Survey in Central Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Konstantin Galybin, Cameron Jones, Frank Nicholson, Ryan Chapman, Rob Twigg
- Date Published: September 2019
Abstract:
Borehole seismic technology provides an efficient way to image the subsurface in high-resolution, through 3D, Walkaway or Offset VSPs. Whilst acquisition time of the conventional VSP survey is less than surface seismic, such VSP surveys can take hour...
Reliable 1D magnetotelluric probabilistic inversion considering modelling assumption violations
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Hoël Seillé, Gerhard Visser
- Date Published: September 2019
Abstract:
A comprehensive understanding of the sources of uncertainty is essential in stochastic inversion workflows of magnetotelluric data. Input uncertainty related to the electromagnetic noise and measurement biases can be reliably estimated statistically ...
Determining petrophysical and hydrogeological parameters from historical bore logs for the Leederville-Parmelia aquifer, northern Perth Basin, using regression methods
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Olga Filiptsova*, Sheryl Ryan
- Date Published: September 2019
Abstract:
A new workflow of bore data re-interpretation that increases the value of old data with only a minimal cost has been developed. The workflow estimates hydraulic and petrophysical parameters from historical bore data, providing clay volume, total poro...
U-Pb ages of the Himalayan foreland basin Northeast India: Implications for the India-Asia collision
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Upendra Baral, Lin Ding, Bhupati Neupane
- Date Published: September 2019
Abstract:
Syn- and post-collision between Indian and Eurasian plates, several peripheral foreland basins were formed that accommodate the detritus from the adjoining regions. The geochronological study is a precise tool for understanding the provenance in this...
Significance of Early Triassic conodont zones from Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: John D. Gorter, Michael J. Orchard, Robert S. Nicoll, Darren Ferdinando
- Date Published: September 2019
Abstract:
The Cunaloo Limestone Member of the Locker Shale (Kockatea Shale facies) from the Carnarvon Basin contains a distinctive conodont zone also seen in the informally named ‘Limestone Marker’ in the lower Kockatea Shale of the northern Perth Basin. T...
Anisotropy analysis from 3D VSP surveys acquired at Otway site
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Sofya Popik, Andrej Bona, Roman Pevzner
- Date Published: September 2019
Abstract:
Knowledge of seismic anisotropy is highly important for Otway site as it can improve the quality of seismic imaging and thus provide better 4D signal/noise ratio. The presence of anisotropy has already been reported at the Otway site.
Compar...
Metal Earth: Role of multidisciplinary geophysical methods to improve knowledge of mineral deposition across Precambrian rocks
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Esmaeil Eshaghi, Richard Smith, Mostafa Naghizadeh, Graham James Hill, Eric Roots, Amir Maleki Ghahfarokhi, Saeid Cheraghi, John Ayer
- Date Published: September 2019
Abstract:
In this paper, we discuss acquiring, processing and preliminary modelling of multidisciplinary geophysical data (i.e. seismic, magnetotelluric, potential field data and petrophysical characterisations) to reliably model subsurface features along the ...
The Bight Basin, Evolution & Prospectivity I: gravity, deep seismic & basin morphology
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jane Cunneen, Chanel DePledge, Sharon Lowe, Kevin Hill, Candice Godfrey, Amanda Buckingham, Rebecca Farrington
- Date Published: September 2019
Abstract:
Definition of the basement architecture within the Ceduna Sub-basin is poorly understood due to the depth of the basin and limited deep crustal geophysical datasets. This study uses seismic interpretation of BightSPAN™ deep crustal seismic lin...
Maximising value from seismic using new data and information management technologies
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jess B. Kozman, Matthew Holsgrove
- Date Published: September 2019
Abstract:
Geophysical data is one of the key decision support factors for successful discovery of hydrocarbons, and operators have multi-decadal inventories of survey data in key basins. Woodside has a history of exploration in Australia from 1954 and seismic ...
Modelling the Palaeozoic tectonic evolution of the Lachlan Orogen
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Thomas Schaan, Sebastien Meffre, Joanne Whitakker, Matthew Cracknell, Michael Roach
- Date Published: September 2019
Abstract:
The Lachlan Orogen’s mineral wealth is a direct result of tectonic processes that took place in the early Palaeozoic, but the exact nature and timing of events is widely contested. Here, we apply new methods of deforming tectonic reconstruction mod...
Inversion of magnetotellurics data with enhanced structural fidelity
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Federico Golfré Andreasi*, Simone Re, Federico Ceci, Luca Masnaghetti
- Date Published: September 2019
Abstract:
The magnetotelluric method has been successfully used as a complementary tool in the exploration of foothill plays but its intrinsic non-uniqueness and its reduced structural fidelity, with respect to a seismic section, make its interpretation more c...
Application of high-end seismic imaging technologies for field development in NWS Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Min Lee Chua, Kai Zhao, Narcisa Lazarescu, Wai King Yong, Sergey Birdus, Alexey Artemov, Xiang Li
- Date Published: September 2019
Abstract:
The North West Shelf, situated in the north-west of Western Australia, is a world-renowned offshore hydrocarbon province with investments of more than A$200 billion to date. However, the quality of the legacy seismic often suffersfrom severe residual...
Carbonate reservoir development in the Canning Basin, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Moyra E.J. Wilson*, Samantha Dykmans, Umair Mumtaz, Rashid Saleem, Iain Copp, Lionel Esteban, June Then, Zahra Seyedmehdi
- Date Published: September 2019
Abstract:
We present a multidisciplinary study investigating depositional and diagenetic impacts on pore system variability in carbonate systems from the Canning Basin. With some of Australia’s only known commercially viable carbonate reservoirs the Canning ...
Using finite dipole lengths in complete earth 3D MT modelling
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Wolfgang Soyer, Federico Miorelli, Randall Mackie
- Date Published: September 2019
Abstract:
We have quantified the use of finite electric dipole lengths from the point measurement assumptions typical in 3D MT inversion modeling. Electric fields are measured across dipoles of typically 50 m to 200 m at MT soundings. Modeling algorithms, howe...
Porosity distribution prediction of untapped Gumai Formation by applying multi-attribute analysis: A case study in South Sumatra Basin
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Mohammad Risyad, Muhammad Fahmi Yahya Faizan
- Date Published: September 2019
Abstract:
Gumai Formation is often regarded as merely regional seal in South Sumatra Basin as it is dominated by shale, claystone and siltstone. However, a variety of geological and geophysical approaches have been conducted in Northeast Betara (NEB) field to ...