A5058094928- Seismic Imaging and Inversion Techniques
- Seismic Waves and Analysis
- CO2 Sequestration and Geologic Interactions
- Seismology and Earthquake Studies
- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Geophysical Methods and Applications
- Geophysics and Sensor Technology
- Reservoir Engineering and Simulation Methods
- Advanced Fiber Optic Sensors
- Geological Modeling and Analysis
- Hydrocarbon exploration and reservoir analysis
- Underwater Acoustics Research
- Atmospheric and Environmental Gas Dynamics
- Ultrasonics and Acoustic Wave Propagation
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Geophysical and Geoelectrical Methods
- Underwater Vehicles and Communication Systems
- Geological Studies and Exploration
- Carbon Dioxide Capture Technologies
- Rock Mechanics and Modeling
- Flow Measurement and Analysis
- NMR spectroscopy and applications
- Offshore Engineering and Technologies
Curtin University
2016-2025
Australian Resources Research Centre
2025
CO2CRC
2013-2022
ARC Centre of Excellence for Core to Crust Fluid Systems
2022
The University of Melbourne
2017
Commonwealth Scientific and Industrial Research Organisation
2009-2013
Distributed acoustic sensing (DAS) is a relatively recent development in the use of fiber-optic cable for measurement ground motion. Discrete sensors, typically using Bragg diffraction grating, have been research and field testing more than 15 years with geophysical applications at least 12 old (Bostick, 2000, summary Keul et al., 2005). However, developments sought to remove need point sensors by fiber itself as sensor (Mestayer 2011; Miller 2012).
Although mammography is the gold standard for breast imaging, its limitations result in a high rate of biopsies benign lesions and significant false negative women with dense breasts. In response to this imaging performance gap we have been developing clinical methodology based on principles ultrasound tomography. The Computed Ultrasound Risk Evaluation (CURE) system has designed goals whole breast, operator-independent differentiation masses. This paper describes first prototype, summarizes...
Carbon capture and storage (CCS) is vital to reduce CO 2 emissions the atmosphere, potentially providing 20% of needed reductions in global emissions. Research demonstration projects are important increase scientific understanding CCS, making processes results widely available helps public concerns, which may otherwise block this technology. The Otway Project has provided verification underlying science a depleted gas field, shows that support all stakeholders can be earned retained....
During the last decade, distributed acoustic sensing (DAS) has emerged as a new technology for seismic acquisition. DAS potential to reduce cost of permanent monitoring operations over time it offers long equipment survivability and requires minimum maintenance. However, broad adoption still faces some challenges, such low sensitivity high levels noise compared conventional sensors. Recent developments in fiber-optic systems cable designs aim overcome these limitations. To understand how can...
Ultrasound imaging is widely used in medicine because of its benign characteristics and real‐time capabilities. Physics theory suggests that the application tomographic techniques may allow ultrasound to reach full potential as a diagnostic tool allowing it compete with other modalities such x‐ray computer tomography, MRI. This paper describes construction use prototype scanner reports on feasibility implementing practice (US) tomography imaging. Data were collected by scanning two types...
Distributed acoustic sensing (DAS) is a rapidly developing technology particularly useful for the acquisition of vertical seismic profile (VSP) surveys. DAS data are increasingly used imaging, but not estimating rock properties. We have developed workflow elastic properties subsurface using full-waveform inversion (FWI) VSP data. Whereas conventional borehole geophones usually measure three components particle velocity, measures single quantity, which an approximation strain or rate along...
Time-lapse seismics is the methodology of choice for remotely monitoring changes in oil/gas reservoir depletion, stimulation or CO2 sequestration, due to good sensitivity and resolving power at depths up several kilometres. This method now routinely applied offshore, however, use time-lapse onshore relatively rare. The main reason this high cost commercial seismic acquisition on land. A widespread belief a poor repeatability land data prevents rapid growth number surveys. Considering that...
Land seismic acquisition is moving toward “light and dense” geometries, with point receiver systems believed to be an ultimate configuration of choice. Cableless land nodal enable more flexible spatial sampling at the price eliminating even small arrays. For large surveys in a desert environment, such spacing remains insufficient address complex near surface, while recordings single sensors exhibit significant reduction data quality. At same time, exploration problems increasingly demand...
Fiber-optic cables have recently gained popularity for use as Distributed Acoustic Sensing (DAS) arrays borehole microseismic monitoring due to their physical robustness well high spatial and temporal resolutions. As a result, the sensors record large amounts of data, making it very difficult process in real-/semi-real-time using conventional processing routines. We present novel approach, based on deep learning, handling DAS data real-/semi-real-time. The proposed neural network was trained...
Abstract Despite public concerns, only a few CO 2 injections into saline aquifers have reported microseismicity. We analyze passive seismic monitoring of small (15,000 tonnes and 0.15 MPa pressure) injection supercritical ‐rich mixture for Stage 2C the CO2CRC Otway Project (Victoria, Australia), which induced 19 detectable events with maximum moment magnitude M W ‐0.5. The locations dynamic parameters triggered indicate reactivation fault patch where flowed through fault. Time‐lapse images...
Passive seismic surveys have attracted interest for use in many geological and geotechnical applications the past few decades, mainly reconstructing models of near-surface properties. They are also mineral exploration shallow deposits where targets lay on or within bedrock covered by loose sediments above. The goal this article was to test effectiveness cheap methods understand cover thickness its lateral variations, which is essential map top bedrock. We investigated passive retrieve...
The ICDP Drilling the Ivrea-Verbano zonE (DIVE) project is focused on studying lower continental crust (LCC) at key sites in Zone of Italian Alps. stratigraphically placed research borehole 5071_1_A drilled settlement Megolo within municipality Pieve Vergonte, Val d’Ossola. It deviated an angle c.a. 18 degrees from vertical and penetrates to a depth 910m. was diamond with 100% core recovery allowing for very comprehensive rock characterisation program LCC lithologies penetrated.As...
Since the inception of ICDP expedition 5071, Drilling Ivrea-Verbano zonE (DIVE) project, geophysical surveys have played a key role in planning and operational stages phase 1. DIVE aims to investigate continental lower crust with focus on physical petrological transition towards crust–mantle boundary at sites Ivrea Zone Italian Alps. Phase 1 drilling site selection was strengthened several 2D seismic profiles Ornavasso, Megolo Premosello municipalities Val d’Ossola,...
Abstract Buried distributed acoustic sensor (DAS) arrays are known to detect and monitor various sources of seismic waves, both natural anthropogenic. But can buried DAS in the atmosphere such as aircraft? There is some evidence aircraft signal data, but more research needed understand detection capabilities estimate flight parameters. A four-week continuous recording with a gauge length 10 m using telecommunication cable beneath Curtin University campus Perth, Western Australia shows...
Summary We have deployed a novel permanent monitoring system at the Australian CO2CRC Otway Site that includes surface and borehole distributed acoustic sensing (DAS) network with orbital vibrator (rotary) seismic sources. DAS is an emerging technology for performing acquisition based on optical interferometric techniques, which allows data collection wide spatial aperture high temporal resolution using commercially available telecommunications fibres. sensitivity currently lags behind...
Distributed fiber-optic sensing is useful in geophysical exploration and monitoring applications. temperature (DTS) used for measuring distributed acoustic (DAS) recording the seismic wavefield. However, DAS measurements also are sensitive to changes. To understand quantify signature of changes during water injections at CO2CRC Otway site, a series experiments have been conducted Curtin University/National Geosequestration Laboratory (NGL) well research facility rock-physics laboratory....
We present an analysis of a field dataset demonstrating the combined use permanent surface orbital vibrator source (SOV) and trenched fiber-optic cable sampled using distributed acoustic sensing (DAS). examine SOV signal characteristics, repeatability, wavefield decomposition for short duration test. show to have excellent spectral repeatability but asymmetric response depending on spin direction. Wavefield tests demonstrate that rotating can effectively be decomposed into equivalent...