A5015946537- Seismic Imaging and Inversion Techniques
- Seismic Waves and Analysis
- Geophysical Methods and Applications
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- CO2 Sequestration and Geologic Interactions
- Seismology and Earthquake Studies
- Geological Modeling and Analysis
- Reservoir Engineering and Simulation Methods
- Geophysical and Geoelectrical Methods
- Hydrocarbon exploration and reservoir analysis
- earthquake and tectonic studies
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Rock Mechanics and Modeling
- Geochemistry and Geologic Mapping
- Underwater Acoustics Research
- Geotechnical and Geomechanical Engineering
- Geophysics and Sensor Technology
- Earthquake Detection and Analysis
- Ultrasonics and Acoustic Wave Propagation
- Landslides and related hazards
- Atmospheric and Environmental Gas Dynamics
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geological and Geophysical Studies Worldwide
Curtin University
2015-2024
CO2CRC
2012-2022
Commonwealth Scientific and Industrial Research Organisation
1994-2018
Australian Resources Research Centre
2017
University of Technology - Iraq
2014
Uppsala University
2011
Service de l'Enfance et de la Jeunesse
2010
Fukuda Denshi (Japan)
2010
Schlumberger (British Virgin Islands)
2009
Schlumberger (Norway)
2009
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....
Due to high metal prices and increased difficulties in finding shallower deposits, the exploration for exploitation of mineral resources is expected move greater depths. Consequently, seismic methods will become a more important tool help unravel structures hosting deposits at great depth mine planning exploration. These also can be used with varying degrees success directly target depth. We review contributions that have been made developing these techniques mining industry focus on four...
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...
A 3D reflection seismic survey was conducted over an area of about [Formula: see text] at the Kevitsa Ni-Cu-PGE (platinum group elements) orebody, northern Finland, where open-pit mining started in mid-2012. The principal objective to image major fault and fracture zones depth that may have impact on mine stability safety. Mine planning would then take into account geometry these Kevitsa. Processing results, using conventional prestack DMO poststack migration methods, show gently dipping...
The greenstone belts of the Yilgarn Craton, Western Australia, host numerous Archaean gold, nickel, and iron ore deposits. These deposits typically are found in complex geologic structures hidden by a deep, heterogeneous, often conductive regolith profile. This added complexity limits depth penetration for potential field methods, but at same time opens new revenue possibilities through application seismic methods. To explore this opportunity, we acquired high-resolution, experimental, 3D...
ABSTRACT To provide a guide for future deep (<1.5 km) seismic mineral exploration and to better understand the nature of reflections imaged by surface reflection data in two mining camps carbonatite complex Sweden, more than 50 rock ore samples were collected measured their velocities. The are geographically from northern central parts ranging metallic deposits, meta‐volcanic meta‐intrusive rocks deformed metamorphosed rocks. First, ultrasonic measurements P‐ S‐wave velocities at both...
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...
The CO2CRC Otway Project conducted under the Australian Cooperative Research Centre for Greenhouse Gas Technologies is first of its kind, where [Formula: see text] injected into a depleted gas reservoir. use fields storage and or enhanced recovery likely to become globally adopted. Therefore, project provides important experience monitoring these conditions. However, injection reservoir (residual saturation zone in this case) does not present favorable condition application geophysical...
CO2CRC has made a significant investment into establishing the feasibility of conducting CO2 injection experiment shallow fault at Otway International Test Centre. Two appraisal wells drilled and cored through Brumbys Fault indicate extends to base upper 2 m thick Hesse Clay layer, which forms seal underlying Port Campbell Limestone aquifer. The does not have defined core; rather, it is expressed by an approximately 6-10 wide cataclastic zone. Permeability within variable, ranging from tens...
ABSTRACT 4D seismic is widely used to remotely monitor fluid movement in subsurface reservoirs. This technique especially effective offshore where high survey repeatability can be achieved. It comes as no surprise that the first successfully monitored CO 2 sequestration process was recorded Sleipner field, North Sea. In case of land projects, poor data due low S/N ratio often obscures time‐lapse signal. Hence for a successful on shore monitoring program improving essential. Stage CO2CRC...
Spherical-wave offset-dependent reflectivity is investigated by measuring ultrasonic reflection amplitudes from a water/Plexiglas interface. The experimental results show substantial deviation of the measured plane-wave coefficients at large angles. However, full-wave numerical simulations point source response using algorithm excellent agreement with measurements, demonstrating that caused wavefront curvature. To analyze effect curvature on elastic inversion, we simulate spherical-wave...
The Australian Cooperative Research Centre for Greenhouse Gas Technologies (CO2CRC) is currently injecting 100,000 tons of CO{sub 2} in a large-scale test storage technology pilot project southeastern Australia called the CO2CRC Otway Project. Basin, with its natural accumulations and many depleted gas fields, offers an appropriate site such project. An 80% stream produced from well (Buttress) near reservoir (Naylor) used (Figure 1). goal this to demonstrate that can be safely transported,...
Observation of azimuthal shear wave anisotropy can be useful for characterization fractures or stress fields. Shear is often estimated by measuring splitting individual events in vertical seismic profile (VSP) data. However, this method may become unreliable zero-offset (marine) VSP where the seismogram contains no strong events, such as direct downgoing wave, but many low-amplitude PS mode converted waves. We have developed a new approach estimation fast and slow velocities orientation...
The higher the resolution demanded from interpretation of seismic data, more care required in acquisition and processing that data. Of steps directly influence resolution, one is having most impact on land data statics correction. Geophysical conferences have devoted entire technical sessions to statics. Seismic crews frequently undertake specific refraction surveys just obtain good Here we outline a very simple solution problem produces remarkable results.
Across the globe, mineral industry is seeking technology to improve exploration efficiency at depth and help design safer more productive mines. Seismic methods are increasingly used by this for a wide range of commodities including base metals, uranium, diamonds, precious metals. provide high-resolution images geologic structures hosting deposits and, in few cases, can be direct targeting deposits. Applications not limited only surface seismic surveys, but also include borehole such as VSP...
A key objective of Stage 2 the CO2CRC Otway Project is to explore ability geophysical methods detect and monitor injection greenhouse gas into a saline formation. For this purpose, o f some 10,000 30,000 tonnes CO2-rich mixture Paaratte formation, aquifer located at depth about 1,400 m, planned. Before such an experiment undertaken, we assess feasibility monitoring using computer modelling. To examine detectability plume need estimate time-lapse signal time- lapse noise. The time modelled...
ABSTRACT Neves–Corvo is one of the biggest mining districts on Portuguese side Iberian Pyrite Belt hosting six different lower Carboniferous copper, zinc, lead and tin orebodies including Lombador, Neves, Graça, Corvo, Zambujal, Semblana. During past 50 years, geological, geochemical, geophysical methods were utilized in exploration volcanogenic massive sulfide deposits at Neves–Corvo. Electromagnetic, earth resistivity, principally gravimetry played major roles area. However, 2011, as depth...
We investigate the potential of using high-resolution seismic methods for rock characterization and targeting gold deposits at St. Ives camp. The application in hard-rock environments is challenged by complex structures, intrinsically low signal-to-noise ratio, regolith distortions, access restrictions. If these issues can be addressed, then unparalleled resolving power reflection used mineral exploration. Appropriate spatial sampling wavefield combined with a survey geometry design rigorous...
Summary Stage 2C of the CO2CRC Otway project aims to demonstrate stabilization a gas plume following injection approximately 15,000 tonnes CO2-rich mixture into saline aquifer and examine capabilities 4D seismic detect track in subsurface. The ability monitor is controlled by both strength signal level time-lapse noise. Extensive modeling field trials show that use buried receiver arrays for long-term monitoring CO2 geosequestration has potential reduce land impact landowners cost project....
Agood seismic velocity model is required for many routine imaging techniques. Velocity building from data often labor intensive and time consuming. The process becomes more complicated by taking nonhyperbolic traveltime estimations into account. An alternative to the conventional time-domain algorithms use techniques based on local event slopes, which contain sufficient information about moveout estimation characterization of subsurface geologic structures. Given there no need a prior...
Time lapse seismic is a vital component of the monitoring and verification virtually any geosequestration project. Stage 2C CO2CRC Otway project designed to test limits land 3D time-lapse (4D) in small-scale CO2 injection. The 4D program Project includes baseline survey (BL); three monitor surveys (M1–M3) obtained during injection CO2-rich gas into saline aquifer at depth 1.5 km intervals 5, 10, 15 kt; two post-injection (M4 M5), acquired one years after end Reliable changes among were using...