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DTSTART;TZID=Australia/Perth:20250401T130000
DTEND;TZID=Australia/Perth:20250401T140000
DTSTAMP:20260606T071315
CREATED:20250310T021419Z
LAST-MODIFIED:20250310T070951Z
UID:10008660-1743512400-1743516000@pesa.com.au
SUMMARY:2025 PESA WEBINAR SERIES: Tracking the Fate of CO2 from Switzerland to Iceland with Geophysical Methods
DESCRIPTION:Kindly supported by Rock Flow dynamics  \n  \nThis live webinar will take place at: \nPLEASE NOTE TIME CHANGE FOR THIS EVENT: \n1pm | Perth\n2.30pm | Darwin\n3pm | Brisbane\n3:30pm | Adelaide\n4pm | Canberra\, Hobart\, Melbourne\, Sydney \nUse the calendar link on this page to add this event in to your own calendar at the correct local time for your location. \nTickets are free for members (please log in to see this) and $10 for non members. \nPlease buy your tickets and immediately follow the link in the ticket e-mail (not the calendar invite or this webpage\, which is just generic and not event specific) to set up your registration with the webinar software well in advance of the time of the talk. Once registered with the webinar software you will receive a reminder e-mail 1 hour beforehand. \nTracking the Fate of CO2 from Switzerland to Iceland with Geophysical Methods \nPresented by Alba Zappone (Swiss Seismological Service) \nAbstract \n\nIn-situ CO2 mineral storage is an effective way of reducing greenhouse gases and fighting global climate change.This technology is particularly interesting for countries that cannot rely on large CO2 storage capacities. Geophysical techniques can help characterise and monitor the storage reservoir. Seismic time lapse\, electrical resistivity tomography (ERT) and gravity measurements are often used to track the CO2 plume. In the few existing in-situ mineral storage sites\, monitoring relies almost only on geochemical methods.Geophysical methods are less established in this context. Seismic time lapse measurements are thought to be less efficient because the CO2 is dissolved in water before it is pumped in\, so the local water is replaced by the CO2-enriched water\, which makes the seismic velocity changes too small to detect.Carbonate precipitation happens slowly and makes very small velocity changes\, mainly because the porosity decreases. ERT involves replacing the existing groundwater with CO2-charged water. This should lead to a decrease in resistivity. However\, resistivity is only expected to increase when carbonates precipitate. Here\, we present the results of testing geophysical methods to measure and check the CO2 storage site in Helguvik\, Iceland\, operated by CARBFIX. This study is part of the Swiss DemoUpCARMA project (https://demoupcarma.ethz.ch/) and uses a variety of scientific methods that have already been successfully tested in other CO2 storage experiments (e.g. Zappone et al.\, 2021). The Helgivik site is a pilot were CARBFIX is testing the efficiency to use sea water for dissolving CO2\, in preparation for an upscaling of the site\, the Coda Terminal that will receive and store 3 million tons of CO2 per year. \nThe pilot storage site lies on the Reykjanes Peninsula in Southwest Iceland\, at about 15 km distance from the seismically and volcanically active rift zone. The CO2 is captured in Switzerland are shipped in isotainers (https://demoupcarma.ethz.ch/) to Helguvik . Here\, after mixing with saline water\, it is injected into the reservoir through a vertical borehole (CBI-01; Fig. 1) with an open section between 250 m and 420 m depth. Two additional vertical wells\, CBM-03 and CBM-01\, with depths of approximately 400 metres\, have been drilled at distances of 30 metres and 100 metres along a northwest-southeast alignment\, respectively\, for the purpose of monitoring reservoir processes. Rock samples obtained from drill cuttings have been utilised in the characterisation of the stratigraphic sequence of the reservoir\, in conjunction with borehole logging data. Furthermore\, drill cores extracted from proximate boreholes have undergone laboratory analysis with respect to porosity network and flow properties\, both prior to and following il laboratory exposure to CO2-rich saline water. Prior to and during the injection operations\, cross-hole seismic measurements were conducted utilising a P-wave borehole sparker source and hydrophone chains. Simultaneously\, single-hole electrical resistivity measurements were performed in all the wells. The background seismicity and the seismicity potentially induced by the injection operations were monitored via a backbone seismic network installed around the injection site\, and by a seismic array of 3D nodal geophones. The data were streamed in real time to ETH Zurich and shared with all the project partners. \nThe multi-disciplinary approach reveals variability of the porosity in the basaltic layers\, already evidenced by laboratory measurements (Stavropoulou et al\, 2024)\, depicting a stratified velocity distribution with depth Single-hole electrical resistivity data corroborate the layering and is in agreement with the mineralogical data from cuttings. The remarkable consistency between ERT and crosshole seismic observations (Junker at al.\, 2025 ) highlights the efficiency of the methods to resolve thin layering structures and giving additional constraints to the borehole logging observations for permeable layers. Characterization with geophysical tools allows the continuity of the underground structures to be observed\, in contrast to point borehole measurements. A permeability model\, based on the crosshole seismic data is found to be in agreement with borehole spinner tests. Modeling on velocity anomalies due to precipitation of Carbonates reveal that that crosshole seismic can detect the precipitation of c.a. 17 kg/m3\, corresponding to c.a. 100 t of injected CO2 at the scale of the pilot project. \nAcknowledgements: This study is part of the DemoUpStorage project that was funded by the Swiss Federal Office of Energy (SFOE\, project number SI/502429).
URL:https://pesa.com.au/events/2025-pesa-webinar-series-tracking-the-fate-of-co2-from-switzerland-to-iceland-with-geophysical-methods/
LOCATION:WA
CATEGORIES:Online
ATTACH;FMTTYPE=image/avif:https://pesa.com.au/wp-content/uploads/2025/03/0_Title.avif
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BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20250408T120000
DTEND;TZID=Australia/Sydney:20250408T143000
DTSTAMP:20260606T071315
CREATED:20250310T024446Z
LAST-MODIFIED:20250404T001008Z
UID:10008658-1744113600-1744122600@pesa.com.au
SUMMARY:PESA ACT/NSW April AGM & Technical Talk
DESCRIPTION:PESA_NSW_2025_AGM_Documents \nPESA NSW Branch Committee Nomination Form 2025\nSource rock deformation and hydrocarbon accumulation controlled by a metamorphic core complex in the Kaiping Sag\, northern South China Sea rifted margin\nThe recent discovery of hundred-million-ton-class oil fields in the Kaiping Sag\, on the northern South China Sea rifted margin\, is considered the first global breakthrough in hydrocarbon exploration within supra- detachment basins controlled by mature metamorphic core complexes (MCCs) at passive margins. We utilize 3D seismic\, petrological and geochemical data to reconstruct source rock deformation and hydrocarbon accumulation in the context of detachment tectonism associated with uplift of the Kaiping MCC. In the pre-MCC stage\, high-quality deep-water lacustrine source rocks of the Lower Wenchang Formation were deposited during the intense rifting. During the late Wenchang stage\, the Kaiping MCC was uplifted via a rolling-hinge process\, which caused the transformation of the original attitude and position of the source rock layers in the Lower Wenchang Formation. The distribution of the source rocks can be characterised by three distinct patterns: disconnected with antithetic dip direction (Model I)\, moderate continuous and V-shaped (Model II)\, and continuous with primitive original dip direction (Model III). These models control the dominant migration direction of hydrocarbons. Furthermore\, the extensive development of fault systems and block rotations associated with the Kaiping MCC linking source rocks to traps and influence local oil migration pathways. The breakthrough of hydrocarbon exploration in the Kaiping Sag verifies that supra- detachment basins associated with MCCs also have the potential to develop high-quality source rocks\, particularly during the rifting phase preceding the uplift of the MCC. The source rocks distribution models\, antithetic faults\, and rotating fault blocks resulting from the Kaiping MCC can serve as a reference model for evaluating source rocks and analysing hydrocarbon accumulation patterns in similar types of basins.
URL:https://pesa.com.au/events/pesa-act-nsw-april-technical-talk-2025/
LOCATION:Castlereagh Boutique Hotel\, 169 Castlereagh St\, Sydney\, NSW\, 2000\, Australia
CATEGORIES:NSW / ACT,Technical Lunch,Technical Talk
ORGANIZER;CN="PESA NSW Secretary":MAILTO:nsw-secretary@pesa.com.au
GEO:-33.872562;151.2089734
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DTSTART;TZID=Australia/Perth:20250415T110000
DTEND;TZID=Australia/Perth:20250415T120000
DTSTAMP:20260606T071315
CREATED:20250407T071539Z
LAST-MODIFIED:20250407T091453Z
UID:10008666-1744714800-1744718400@pesa.com.au
SUMMARY:2025 PESA WEBINAR SERIES: Cretaceous – Paleogene Evolution of Bottom Currents in the Northern Carnarvon Basin\, Northwest Shelf of Australia
DESCRIPTION:Kindly supported by Rock Flow dynamics  \n  \nThis live webinar will take place at: \n11am              – Perth\n12.30pm       – Darwin\, Adelaide\n1pm                – Brisbane\, Canberra\, Hobart\, Melbourne\, Sydney \nUse the calendar link on this page to add this event in to your own calendar at the correct local time for your location. \nTickets are free for members (please log in to see this) and $10 for non members. \nPlease buy your tickets and immediately follow the link in the ticket e-mail (not the calendar invite or this webpage\, which is just generic and not event specific) to set up your registration with the webinar software well in advance of the time of the talk. Once registered with the webinar software you will receive a reminder e-mail 1 hour beforehand. \nCretaceous – Paleogene Evolution of Bottom Currents in the Northern Carnarvon Basin\, Northwest Shelf of Australia \nPresented by Mulky Winata and Chris Elders (Curtin University) \nAbstract \n\nBottom current deposits are common features along continental margins and are typically associated with slopes\, either at the continental rise or adjacent to shallow shelves. In this study\, we provide a detailed characterisation of Aptian to Rupelian deposits that developed in the centre of the Exmouth Plateau of the Northern Carnarvon Basin\, Northwest Shelf of Australia\, on c. 500 km wide ramp-type margin\, characterised by gentle slope breaks between the coastline and the deep basin. Sediment mounds and moats initially developed during the Aptian to Turonian in clastic sediments in the southwest of the study area\, whereas reduced sediment accumulation characterised the north-eastern sector. During the Turonian to Lutetian\, a transition to carbonate sedimentation occurred. Interestingly\, these features continued to develop\, with the mounds gradually establishing themselves through aggradational growth\, while the moats were infilled by sediments exhibiting complex structures\, including small-scale mounds and incisions with a wide variety of different morphologies. From the Danian to Rupelian\, there was a notable decrease in moat infilling and mound growth\, leading to significant progradation of sediment toward the northeast. This final stage of sedimentation was characterised by stacked deep incisions\, ridges\, and conical depressions. Initial stages of deposition correspond to a period of time when a wide and open ocean was present to the north of Australia\, but only narrow seaways and intracontinental rifts\, associated with the breakup of Gondwana\, were present to the west and south. The accelerated growth of mounds occurred during a period of accelerated separation of Greater Indian and Australia while cessation of bottom current activity corresponds to a period of rapid separation of Australia from Antarctica. The recognition and investigation of bottom current features provide new insights into the way in which oceanic circulation patterns may have evolved as the breakup of Gondwana progressed and can help our understanding of the processes that operate during the early stages of passive margin development and the formation of oceanic basins. In addition\, more detailed knowledge of the sedimentary deposits that comprise the post-rift sequence in the Northen Carnarvon Basin can help improve understanding of velocity variations and drilling conditions in these sequences.
URL:https://pesa.com.au/events/2025-pesa-webinar-series-paleogene-evolution-of-bottom-currents-in-the-northern-carnarvon-basin/
LOCATION:WA
CATEGORIES:Online
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DTSTART;TZID=Australia/Perth:20250417T120000
DTEND;TZID=Australia/Perth:20250417T140000
DTSTAMP:20260606T071315
CREATED:20250327T064116Z
LAST-MODIFIED:20250327T064116Z
UID:10008662-1744891200-1744898400@pesa.com.au
SUMMARY:PESA WA April Technical Lunch: What you should know about borehole images but were afraid to ask…. Forty years of hard-won lessons
DESCRIPTION:Hosted with thanks to our Platinum sponsor SLB: \n  \n \nGold Sponsors IKON Science: \n \n  \nand Silver Sponsors Delft\, Qeye and Task Fronterra Geoscience: \n                       \n\nPESA WA invites you to our technical luncheon on Thursday 17th April.\nWhat you should know about borehole images but were afraid to ask…..  Forty years of hard-won lessons\nPresented by Lawrence Bourke (Task Fronterra Geoscience)\n\nBorehole images (BHI) have been around commercially\, for around 40 years now.  The real breakthrough was led by SLB using micro-resistivity on wireline providing cm scale\, high resolution images capable of supporting detailed sedimentological and fracture characterisation to compliment structural analysis.  A whole new field of study\, complimentary to core and seismic data was born! \nIn the early 1990s two things began in earnest:  The development of LWD tools (which would take 20 years to catch up with wireline usability) and the widespread use of Oil Based muds which were a serious setback to BHI interpretability and application\, that would take nearly 20 years to resolve with electronics innovation. \nToday\, there is a bewildering array of image tools: micro resistivity\, sonic\, density\, induction\, capacitance\, electromagnetics\, passive nuclear etc.  All the acquisition companies have their “me too” LWD and wireline offerings\, and also rebrand from time to time!.  But they are not all the same\, in terms of resolution\, bedding definition\, accuracy and application.  But the sales engineers won’t really help you decide! \nFortunately\, we have done that hard work of comparison\, applicability\, and reliability.  Based on detailed commercial studies across the globe over the last 40 years\, the conclusions are presented in a clear and concise manner for the casual BHI user. \nTicket Prices: \nMember (Early Bird): $69.00 \nConcession Member [Retired or Hardship]: $59.00 \nStudent Member: $10.00 \nGraduate Member: $20.00 \nNon-Member: $99.00 \nMember (Non-Early Bird): $79.00 \nEarly bird\, Concession\, Student and Graduate Member pricing ends Thursday (1 week prior) at 5pm (AWST). All ticket sales close at 5pm Tuesday (2 days prior). \n 
URL:https://pesa.com.au/events/pesa-wa-april-technical-lunch-borehole-images-hard-won-lessons/
LOCATION:Parmelia Hilton\, 14 Mill Street\, Perth\, Australia
CATEGORIES:Industry,Technical Lunch,WA
ATTACH;FMTTYPE=image/avif:https://pesa.com.au/wp-content/uploads/2025/03/Borehole_Image.avif
ORGANIZER;CN="PESA Western Australia":MAILTO:wa-secretary@pesa.com.au
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