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ASEG WA Tech Night - Case Studies from Loupe & Helitem

Thursday, March 12, 2020

Please rsvp before 11th March 2020 to attend Joint Tech Nights organised by ASEG WA branch. The link for registration:


Direction to the venue: Celtic club


First Technical Talk: Case Studies from Loupe – New Technology in Portable TEM for Near-Surface Measurements

Presenter: Andrew Duncan, Loupe Geophysics


A portable, broadband TEM system, Loupe, has been developed for the purpose of measuring near-surface electrical conductivity. The system records continuously while walking using a three-component coil receiver mounted on an ergonomic backpack from signals generated by a small (660mm) diameter, multi-turn transmitter loop mounted on a similar backpack.

The Loupe system is designed primarily to measure electrical conductivity in the top 25 metres, previously the charter of frequency-domain EM systems.  Using modern electronics and software, combined with full time-series measurement, we have been able to overcome the interference and calibration issues around measuring near surface conductivity with a broad bandwidth time-domain system.  Sampling at around a half million samples per second and processed to produce a measurement of secondary TEM field every second, the Loupe system provides very high spatial resolution.  Data can be viewed as the operators walk, allowing survey redesign as necessary.

During 2019, trial surveys were conducted with Loupe in a number of near-surface applications including mineral exploration on surface and underground, geological / regolith mapping, study of groundwater around tailings storage facilities and the mapping of structural features in open-cut mines.  We see a wide application for Loupe in mapping seepage both from mine tailings and acid mine drainage.

Loupe has proved to be quite versatile, working in difficult terrain and areas with high electromagnetic interference such as mine sites and urban sites. Special challenges are presented when working on these sites due to power reticulation, vehicle movement and infrastructure.  We will give examples showing data collected in these environments.

During this presentation, we will summarise the Loupe system and show results from several recent surveys.


Andrew Duncan is the Managing Director of ElectroMagnetic Imaging Technology Pty Ltd (EMIT), based in Perth, WA. EMIT, which recently celebrated 25 years in business, has developed technology including the SMARTem electrical methods receiver system, Maxwell EM software and the DigiAtlantis borehole magnetometer system for EM. Andrew has a background in the development of technology for electrical geophysics including the development of airborne EM systems and distributed systems for geophysical measurements. Recently, he founded Loupe Geophysics with Greg Street, in order to develop and commercialise a novel, portable TEM system called Loupe. Andrew has interests in signal processing, EM techniques for highly conductive targets and modelling of EM data.



Second Technical Talk: Helitem2: New Technology in Airborne TEM for Deep and Covered Targets with Western Australia Examples

Presenter: Adam Smiarowski, CGG


Exploration for targets at depth or targets obscured by conductive overburden have historically been a challenge with airborne EM methods. Although modern systems have been improved with greater primary transmitter moments, noise levels from receiver coil motion in the Earth’s ambient field has limited the detection of secondary target signals, especially at late times, and has limited the use of lower base frequencies. The new Helitem² system uses a patented low-noise receiver, a 50% duty cycle square pulse transmitter waveform, and low Tx base frequency, to achieve increased signal detectability for deep and covered targets.

Modeling and a series of demonstration surveys compared several helicopter-borne time-domain system configurations, including high-moment halfsine waveforms and low base frequency (15 Hz and 7.5 Hz) 50% duty cycle square waveforms. Using a thin-plate, modelling showed that a low base frequency square pulse will have a significantly larger response than a half sine pulse at standard 30 Hz base frequency for a wide range of target conductances. At early times, the sharper (quicker) turn off of the square wave results in much more high-frequency energy, and therefore better signal, for weakly conductive targets, and better near-surface resolution. At the other extreme, the response from very conductive targets is determined by the area under the transmitter curve, so the low frequency square waves with 16 and 33 ms widths produces more than twice the signal as the half sine.

Demonstration survey line profiles and decay curves over the target and background locations confirmed this modelling for a 400 m deep target and variable overburden. The combination of pulse width, power, and low noise enabled the Helitem2 system to be effective at low base frequencies, where very late time data is beneficial for detecting strong and deep targets. The survey demonstrated that the redesigned Rx suspension system was able to reduce coil motion noise, enabling acquisition of high quality low base frequency data useful for detection of deep targets to very late times. The wide-pulse waveform was effective at energizing a moderately-conductive target, increasing signal level by a factor of 2 above a 6 ms pulse. This will be even more beneficial when exploring for strong conductive targets at depth. Prior to this Rx re-design, noise levels at low base frequencies was too high, and the data was not useful for target detection.

Examples from Western Australian are provided, illustrating data improvements of Helitem2 operating at 12.5Hz, over a previous survey at 25Hz.


Adam has been involved with electrical methods for environmental and exploration applications for 15 years. Adam completed an MSc in Geophysics at RMIT University and PhD in Physics and Geology at the University of Toronto.  He has been involved with airborne EM research, both in frequency and time-domain, with CGG MultiPhysics for the past 9 years.




ASEG WA Tech Night - SEG 2020 Honorary Lecturer Lisa Gavin

Wednesday, February 12, 2020



Please rsvp before 11th February 2020 to attend 2020 1st Tech Nights organised by the ASEG WA branch. The link for registration:


Direction to the venue: Celtic club

The handout for the event is available here.

Sub 20 - Inaugural Deep Earth Imaging Conference

Wednesday, February 12, 2020

CSIRO’s Deep Earth Imaging Future Science Platform is organising an interdisciplinary subsurface conference around the themes of imaging, conceptualisation and prediction of water, energy and mineral resources. Over two days, we will focus on the science required, developed and deployed by academia, industry and government to prospect today for the resources that will underpin our low energy future. The conference will include a combination of keynotes, panel discussions, presentations and networking opportunities. Particular emphasis will be placed on the next generation of techniques to acquire knowledge about the subsurface; by for example combining machine learning, forward modelling, inverse theory and predictive applications.

Registration now open.

Wednesday 12 - Thursday 13 Feb 2020

Optus Stadium, Perth

333 Victoria Park Dr, Burswood WA



The Deep Earth Imaging Future Science Platform is holding its inaugural conference that will focus on the scientific advancements required to progress the understanding of the systems behind the formation of water, mineral and energy resources. To unlock challenging-to-recover resources situated at depth requires improving the predictive power of geoscience tools to enable the capture and integration of subsurface, deep earth information for resource modelling. Key to this is to develop knowledge through inference from often incomplete, sparse, indirect and irregularly distributed measurements of the subsurface. The conference will serve as a platform to showcase current developments and to identify challenges and opportunities.

The Three Pillars

Imaging – An ever-increasing volume of geo-data drives the development of novel techniques that are able to produce snapshots of resource systems. Future breakthroughs will be based on advances in sensor networks and computational techniques to extract the maximum amount of information from our observations.

Conceptualisation – Our understanding of mineral, energy and ground water systems only increases when we combine images of the subsurface with geological knowledge. Confidence in predictions will increase if they are underpinned by formal interpretations of images and transparent conceptualisations of geological processes.

Prediction – Robust predictions are the key to de-risking exploration in geological complex settings and managing water and hydrocarbon resources. Improving prediction will require advancing inference capabilities so we can turn images and conceptualisations into insight and understanding.

Program highlights

Sessions dedicated to imaging, conceptualisation and prediction with keynote presentations that identify the challenges and opportunities in these spaces and knowledge development through inference.

Panel discussions by experts in industry, government and academy focused on the roles of imaging, conceptualisation and prediction, and the synergies between these activities.

A stream focused on the relevance and value of imaging, conceptualisation and prediction in the social license to operate context.

An introduction to the current and planned research initiatives by government and academia to aid prospecting for the resources that will underpin a low energy future.


Prizes for:

Best presentation by an early career researcher (less than 3 years relevant experience post PhD)

Demonstrated excellence achieved through interdisciplinary research (presentation)

Best poster


Why should you attend?

Gain an understanding of the challenges and opportunities shared between imaging, conceptualisation and prediction for energy, mineral and water resources.

Learn about new developments in inversion of geophysical data by academia, industry and government agencies.

Familiarise yourself with CSIRO’s role in the Deep Earth Imaging innovation space.



100 to 500 words abstract with a maximum of one figure.

No abstract submission fee.

Please submit your abstract to

The deadline for abstract submission is Tuesday 24th December 2019.

Authors will be contacted and invited to present either a talk or a poster by Friday 10th January 2020.

Download the abstract template (Word, 205KB)


Opens November 2019.

The first 25 registrations will be covered by CSIRO’s Deep Earth Imaging Future Science Platform.

Blockchain in Oil & Gas Australia

Thursday, December 5, 2019

December 5th in Perth: Blockchain in Oil & Gas Australia

Australia is set to become the world’s largest gas exporter by 2020, yet the industry faces the ever-increasing threat of consistently low crude oil prices, ageing infrastructure, machinery and equipment, and rising bottom-line pressures.  The need to rapidly drive down costs and increase operational efficiencies has never been more crucial.

This one day event brings together industry leaders from leading oil and gas companies in Australia, to discuss and strategise how to develop and implement cutting-edge blockchain technologies. 

Hear from 25+ leading local and global thought leaders on how blockchain technology such as smart contracts, distributed data, and public ledgers can be leveraged to transform your operational efficiency.

Attending this event will ensure that you:

Understand how to smartly develop blockchain scalable solutions for your company

Uncover exactly why blockchain is an ideal technology for oil and gas

Save time and money by being ahead of the blockchain adoption curve

Accelerate your blockchain learning journey by investigating the newest and latest technologies

Network with peers and exchange ideas in a space, which is new, uncertain and rich in opportunity

Meet the entire Australian Oil & Gas value chain from producers, operators, oil services companies and technology providers

More details can be found here:

IoT & Machine Learning in Oil & Gas Australia

Tuesday, December 3, 2019

December 3rd - 4th, 2019

This event brings together senior executives representing the entire Oil & Gas value chain in Australia, to discuss, strategise and debate the new digital disrupters in the Oil & Gas sector:  IoT & Machine Learning.  

Australia is set to become the world’s largest gas exporter by 2020, yet the industry faces the ever-increasing threat of consistently low crude oil prices, ageing infrastructure, machinery and equipment, and rising bottom-line pressures.  The need to rapidly drive down costs and increase operational efficiencies has never been more crucial.

IoT & Machine Learning in Oil & Gas Australia 2019, is the strategic meeting place to learn about how this digital transformation will revolutionise the oil and gas industry, and enable greater efficiencies and insights in reporting, analytics and large-scale business decisions.

Hear from 25+ leading local and global thought leaders on how to harness the power of intelligent technologies to respond to and navigate volatile oil prices, constantly rising bottom-line pressures and seamlessly digitise your operational capability.

More details can be found here:


Sunday, March 15, 2020

19th International Symposium on Deep Seismic Profiling of the Continents and their Margins
15 - 19 March 2020
Esplanade Hotel, Fremantle, Western Australia

Find a flyer for the event here.

The 19th International Symposium on Deep Seismic Profiling of the Continents and their Margins - SEISMIX 2020

Sunday, March 15, 2020

The 19th  International Symposium on Deep Seismic Profiling of the Continents and their Margins - SEISMIX 2020

On behalf of Curtin University, Perth, we would like to invite you to participate in the 19th edition of the biennial International Symposium on Deep Seismic Profiling of the Continents and their Margins (SEISMIX 2020) that is now also extended to include the latest technological and scientific developments in the application of seismic methods. This high profile conference has been held in many countries it is our pleasure to welcome delegates to Fremantle W.A.

The Symposium will be held at the Esplanade Hotel in Fremantle, near Perth, Western Australia, from Sunday 15th of March to Friday 19th of March 2020.

A field trip is also planned to take place after the Symposium. It will run for seven to eight days and take in a wide range of Western Australia’s pristine coastlines and interior.

Symposium registrations and abstract submissions are now open:

  1. Register here for the Symposium
  2. Submit your abstract here


WA Tech Night - PSDM in relatively benign on-shore settings

Wednesday, November 13, 2019

Date = Wednesday 13 November

Time = 530 to 7pm

Venue = Celtic Club, West Perth WA

Title = PSDM in relatively benign on-shore settings

Speaker = Marianne Rauch, TGS



Off-shore, depth imaging has been performed for a long time, especially to improve imaging around salt domes and faults. However, conventional wisdom dictates that in geological benign areas, it is not necessary to pre-stack depth migrate the data and stretching from time to depth is enough. A majority of the unconventional reservoirs are in geological less complex areas and this argument could be valid. We are presenting our thoughts why this is not correct and why applying a well-executed PSDM is worth the effort.


In many on-shore unconventional basins worldwide, the general geology around the tight reservoirs is nearly flat but the velocity and anisotropy within these layers can change rapidly laterally. PSTM velocities are based on hyperbolic assumptions and the ability to accurately image these changes are limited. In addition, it is crucial to solve the velocities in the near surface for accurate ray tracing but nearly impossible to do in the time domain. These issues can produce incorrect depthing and lateral positioning of the seismic events. A well-performed PSDM will result in an amplitude preserved dataset that has a higher resolution and can be used for geo-steering and attribute calculation which will further enhance the knowledge of the reservoir space. 


Speaker Bio:

Marianne received her PhD in Physics in 1985 from Uni Graz in Austria. She started her oil career as research assistant at Curtin University in Perth, Australia 30 years ago and has been active in geophysics ever since then. Marianne lived in many places and worked on-shore and off-shore basins all over the world. Her main specialties are DHI, seismic processing, depth migration, potential fields and researching new technologies, methodologies. She likes to do applied research, mentor and teach and is a seasoned presenter at conventions and workshop. She has published a good number of articles on several subjects and still is passionate about geoscience and the thrill to get more and unique information out of geophysical measurements that help drilling more successful wells. Currently, she is the Principal Technical Advisor, multi-client, onshore, TGS, Houston.

WA Tech Night - What is that anomaly? Using machine learning to obtain geological knowledge from downhole petrophysical data

Wednesday, October 9, 2019
Date = Wednesday 9 October
Time = 530 to 7pm
Venue = Celtic Club, West Perth WA
Title = What is that anomaly? Using machine learning to obtain geological knowledge from downhole petrophysical data
Speaker = Mark Lindsay, Senior Research Fellow, CET, UWA



Machine learning encapsulates methods that enable computers to learn and act as humans, while continuously improving their learning over time in an autonomous manner. The process of continuous improvement is a key advantage of machine learning, and is achieved via access to larger datasets and information. Unsupervised machine learning methods are particularly adept at analysing large and diverse datasets to find commonalities between attributes and produce 'clusters', or groups of data points that share similar characteristics. These techniques appear adaptable for geoscientific data, with uptake by practitioners being high in recent years. A geophysical study of the Eastern Yilgarn, Yamarna region, was supported by analysis of drillcore using machine learning, and attempted to obtain more geological knowledge from the measured data. Five drill cores are analysed in the M476 Project; 12DHDD0001, 12DHDD0002, 15EIS001, 15SYDD0003B and 15SYDD0004. Analyses produced some expected associations between rocks and petrophysics (high density and basalt) while some unexpected associations were also obtained (conductivity and quartz). These and other results will be presented, and examples of how these can be used to support structural geophysical interpretation will be discussed. This work was supported by the Mineral Research Institute of Western Australia, the Geological Survey of Western Australia and Gold Road Resources.

Speaker Bio:

Mark Lindsay is a Senior Research Fellow at the Centre for Exploration Targeting, School of Earth Sciences, the University of Western Australia (UWA) and specialises in structural geophysical interpretation, integrated geoscientific and 3D modelling with an interest in understanding their interrelated uncertainties and the value-of-information. He also has research interests that include investigating complex systems and mineralisation. Machine learning and AI are also disciplines Mark attempts to use to answer geological questions. Mark is co-leader of the Automated 3D modelling model of the 'MinEx' Co-operative Research Centre, a science leader in the Loop 3D geological modelling consortium.

ASEG-PESA WA: 32nd Annual Golf Classic: Joondalup Resort

Friday, December 6, 2019

ASEG-PESA 32nd Annual Golf Classic: Joondalup Resort Golf Course

The ASEG-PESA Annual Golf Classic is one of the most pleasant and well-attended oil and mineral industry golf tournaments held in Perth with recent years enjoying attendances of 100+ players.

This years tournament will be hosted at Joondalup Resort, on Friday 6th December 2019. The Joondalup Resort golf course, designed by the internationally renowned Robert Trent Jones Jr, presents a tough, uncompromising layout, featuring great variation in setting and style. The spectacular golf course in Perth sweeps across dense bushland, cuts through steep limestone quarries and skirts picturesque lakes, to present surprises and challenges at almost every turn. One minute you are playing an approach shot beneath a 30-metre limestone cliff, the next you are adapting to the fresh ocean breeze on an undulating links style fairway.

After the charity success from the 2018 Classic, ASEG-PESA has decided to partner again with our charity of choice, Parkerville Children and Youth Care. The charity is a 115-year-old non-for-profit organization, based here in WA. With 1/4 girls and 1/6 boys affected by child abuse and trauma by the age of 18, Parkerville has a huge role within our community; to raise awareness of child abuse, provide services for those in need and grow the network of support in providing a future for our WA children, young people, and families. As a proud supporter of the charity, we will run the day to raise as many funds as possible and are inviting your company to take part in it. There will be a silent auction, competitions, prizes, and raffle.


Teams of 4 will play ambrose rules, and mystery hole handicap weighting’s applied. The schedule for the day will be as follows:

8:30am: Coach departs Hay street across from Holiday Inn, Perth City
10:00am: Coach arrives at Joondalup Resort Golf Course
10:00am: Registration and allocating of players to carts – cart labels with individual names
10:30-11:30am: Chipping competition
11:00-11:50am: Light barbecue prior to start
11:50am: Briefing from pro shop staff
12:00pm: Shotgun start with escort to appropriate holes
4:30pm: Approximate finish
4:30pm: Drinks from bar
6.00pm: Buffet dinner
9:00pm: Coach departs for Perth

Ticket Prices:

Member (ASEG or PESA): $160.00

Non-Member: $210.00

Registrations open 26th August at 12:00pm (AWST). Book now to avoid disappointment as tickets are strictly limited


We kindly thank the following sponsors for supporting this event:

For sponsorship opportunities contact or