The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Lincoln Paterson - One of the best experts on this subject based on the ideXlab platform.
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simulation of co2 migration for the planning of well test configurations at the south west hub project western australia
Energy Procedia, 2017Co-Authors: Christopher P Green, Karsten Michael, Lincoln PatersonAbstract:Abstract Containment of injected CO 2 at the South West Hub project in Western Australia is dependent on non-structural trapping mechanisms in the 1500 m thick Wonnerup Member of the Lesueur Sandstone due to uncertainties regarding the sealing character of the ∼600 m thick overlying Yalgorup Member. Therefore, vertical migration distance and sweep efficiency and their impact on Residual Saturation and CO 2 dissolution need to be properly assessed through reservoir simulations. We find that conventional Darcy-flow reservoir simulations result in significantly different predictions of plume migration compared to invasion percolation modelling when injecting at the base of the Wonnerup Member. If numerical predictions of the fate of injected CO 2 are sensitive to the choice of model, care must be taken when selecting the methodology. One way to validate simulation predictions at a scale appropriate to the modelling is the use of well tests. In the Wonnerup Member a vertical migration test is recommended for consideration to confirm whether conventional reservoir simulations or percolation invasion modelling accurately predict the CO 2 migration processes at the site. This test would involve a small injection of CO 2 that is allowed to migrate upwards. The migration would be monitored with repeat pulsed neutron logging. This represents a new kind of test unique to the situation for the South West Hub site.
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observations of carbon dioxide Saturation distribution and Residual trapping using core analysis and repeat pulsed neutron logging at the co2crc otway site
International Journal of Greenhouse Gas Control, 2016Co-Authors: Tess Dance, Lincoln PatersonAbstract:Abstract Time-lapse pulsed-neutron well logging has been applied at the CO2CRC Otway site to measure changes in carbon dioxide Saturation profiles across an injection interval. Three stages of contrasting Saturation were logged: when the formation was fully water saturated; after CO2 was injected; and after water was injected to drive the CO2 to Residual Saturation. This allowed for a unique opportunity to observe changing fluid Saturation responding to relative permeability hysteresis at the field scale as part of a controlled experiment. The high vertical resolution of the logs (
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using oxygen isotopes to quantitatively assess Residual co2 Saturation during the co2crc otway stage 2b extension Residual Saturation test
EGUGA, 2016Co-Authors: Sascha Serno, Tara C Laforce, Jonathan Ennisking, Chris Boreham, Ralf R Haese, Gareth Johnson, Lincoln PatersonAbstract:Residual CO2 trapping is a key mechanism of secure CO2 storage, an essential component of the Carbon Capture and Storage technology. Estimating the amount of CO2 that will be Residually trapped in a saline aquifer formation remains a significant challenge. Here, we present the first oxygen isotope ratio (δ18O) measurements from a single-well experiment, the CO2CRC Otway 2B Extension, used to estimate levels of Residual trapping of CO2. Following the initiation of the drive to Residual Saturation in the reservoir, reservoir water δ18O decreased, as predicted from the baseline isotope ratios of water and CO2, over a time span of only a few days. The isotope shift in the near-wellbore reservoir water is the result of isotope equilibrium exchange between Residual CO2 and water. For the region further away from the well, the isotopic shift in the reservoir water can also be explained by isotopic exchange with mobile CO2 from ahead of the region driven to Residual, or continuous isotopic exchange between water and Residual CO2 during its back-production, complicating the interpretation of the change in reservoir water δ18O in terms of Residual Saturation. A small isotopic distinction of the baseline water and CO2 δ18O, together with issues encountered during the field experiment procedure, further prevents the estimation of Residual CO2 Saturation levels from oxygen isotope changes without significant uncertainty. The similarity of oxygen isotope-based near-wellbore Saturation levels and independent estimates based on pulsed neutron logging indicates the potential of using oxygen isotope as an effective inherent tracer for determining Residual Saturation on a field scale within a few days.
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Residual co2 Saturation estimate using noble gas tracers in a single well field test the co2crc otway project
International Journal of Greenhouse Gas Control, 2014Co-Authors: Tara C Laforce, Jonathan Ennisking, Chris Boreham, Lincoln PatersonAbstract:Abstract This paper presents the results of a partitioning tracer test using noble gases to measure Residual CO 2 Saturation in the field as one part of the CO2CRC Residual Saturation and dissolution test sequence. Noble gas tracers were used in a sequential partitioning tracer test. The first tracer test was performed prior to CO 2 injection to characterise the aquifer under single-phase conditions. The second tracer test was performed after CO 2 had been driven to Residual Saturation. The noble gas tracers can be regarded as non-partitioning aqueous-phase tracers in the undisturbed aquifer and subsequently as water/CO 2 partitioning tracers in the presence of the Residual CO 2 Saturation. One-dimensional radial simulations are used to estimate Residual Saturation from the tracer tests by fitting only two independent parameters: the apparent dispersivity of each tracer in the aqueous phase and the Residual CO 2 Saturation. This analysis method is validated by successful application to krypton (Kr) and xenon (Xe) production curves from the field data. Both tracers give the same estimate of Residual Saturation to within the accuracy of the method. Furthermore the estimated Residual Saturation from the noble gas tracer tests is consistent with independent measurements. However the analysis of the two tracer production curves indicates that Xe has higher dispersivity than Kr, despite having been injected and produced simultaneously and measured from the same samples. Finally the application of this sequential tracer test method to other field settings is discussed.
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overview of the co2crc otway Residual Saturation and dissolution test
Energy Procedia, 2013Co-Authors: Lincoln Paterson, Tess Dance, Tara C Laforce, Jonathan Ennisking, Chris Boreham, Mark Bunch, Barry Freifeld, Ralf R Haese, Charles Jenkins, Matthias RaabAbstract:Residual and dissolution trapping are important mechanisms for secure geological storage of carbon dioxide. When appraising a potential site, it is desirable to have accurate field-scale estimates of the proportion of trapping by these mechanisms. For this purpose a short single-well test has been conceived that could be implemented before largescale injection. To test this concept in the field, a Residual Saturation and dissolution test sequence was conducted at the CO2CRC Otway site during 2011. The test involved injection of 150 tonnes of pure carbon dioxide followed by 454 tonnes of formation water to drive the carbon dioxide to Residual Saturation. A variety of methods for measuring Saturation were applied to the injection zone so the results could be compared. Here we provide an overview of the field-test sequence and the measurement methods.
Karsten Michael - One of the best experts on this subject based on the ideXlab platform.
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multi level co2 injection testing and monitoring at the south west hub in situ laboratory
Energy Procedia, 2018Co-Authors: Karsten Michael, Tess Dance, Barry Freifeld, Linda Stalker, Arsham Avijegon, Ludovic Ricard, Claudio Delle Piane, Mark Woitt, Jo Myers, Marina PeruvkhinaAbstract:Abstract The In-Situ Laboratory Project entails completing, instrumenting and pump testing five intervals in an existing well and injecting a small volume of CO2 for testing purposes into the Lesueur Formation at the South West Hub project in Western Australia. The project commenced in the middle of October 2016 and is scheduled to run until the end of April 2019, with hydraulic testing and CO2 injection planned towards the end of 2018. The purpose is to aid demonstration of the commercial viability of geologically storing carbon and contribute to broadening the portfolio of globally evaluated geological settings for storage via testing of a more than 1000 m thick injection reservoir in which CO2 migration is largely governed by Residual Saturation and dissolution trapping. The project will develop the first part of an enduring research facility at the South West Hub to enable further research of a geological environment that has more uncertainty than many other current projects; i.e. in the case of the South West Hub there is uncertainty around the extent of a regional seal.
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simulation of co2 migration for the planning of well test configurations at the south west hub project western australia
Energy Procedia, 2017Co-Authors: Christopher P Green, Karsten Michael, Lincoln PatersonAbstract:Abstract Containment of injected CO 2 at the South West Hub project in Western Australia is dependent on non-structural trapping mechanisms in the 1500 m thick Wonnerup Member of the Lesueur Sandstone due to uncertainties regarding the sealing character of the ∼600 m thick overlying Yalgorup Member. Therefore, vertical migration distance and sweep efficiency and their impact on Residual Saturation and CO 2 dissolution need to be properly assessed through reservoir simulations. We find that conventional Darcy-flow reservoir simulations result in significantly different predictions of plume migration compared to invasion percolation modelling when injecting at the base of the Wonnerup Member. If numerical predictions of the fate of injected CO 2 are sensitive to the choice of model, care must be taken when selecting the methodology. One way to validate simulation predictions at a scale appropriate to the modelling is the use of well tests. In the Wonnerup Member a vertical migration test is recommended for consideration to confirm whether conventional reservoir simulations or percolation invasion modelling accurately predict the CO 2 migration processes at the site. This test would involve a small injection of CO 2 that is allowed to migrate upwards. The migration would be monitored with repeat pulsed neutron logging. This represents a new kind of test unique to the situation for the South West Hub site.
Kayhan Develi - One of the best experts on this subject based on the ideXlab platform.
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effect of surface roughness and lithology on the water gas and water oil relative permeability ratios of oil wet single fractures
International Journal of Multiphase Flow, 2015Co-Authors: Tayfun Babadagli, S. Raza, X. Ren, Kayhan DeveliAbstract:Abstract This paper discusses the effect of surface roughness on the water–gas and water–oil relative permeabilities of single fractures. After manufacturing 20 × 20 cm transparent replicas of fractures developed under tensional load, constant injection rate displacement experiments were performed. Saturation distribution against time was visually monitored and the Residual phases were determined for seven fracture samples of different rock types. These values were then correlated to the fractal and statistical properties of the fracture surfaces. Fractures developed from less porous and larger grain size rock samples (marbles) showed “larger scale” heterogeneity, which caused Residual phase Saturation in the form of large pockets. Porous rocks with small grain sizes (limestones) showed “small scale” heterogeneity yielding Residual Saturations in small pockets. The fractal dimension obtained by the triangular prism method has more control on the Residual Saturation distribution than the other fractal and statistical parameters. Subsequently, the relative permeability ratios were determined using the simplified Corey equation for fracture systems and the conditions causing deviations from the “cubic ratio” behavior were clarified qualitatively and quantitatively for four different displacement cases (water–gas, gas–water, oil–water, and water–oil). In the liquid-liquid cases, the deviations were due to a combined effect of wettability and roughness. Highly granular (and porous) limestone samples, with the smallest grain size out of the seven samples, presented the biggest deviation from the “cubic ratio” in the water displacing oil and gas cases. The semi-quantitative analysis presented in this paper is expected to give new insights into Residual phase Saturation development and the deviations of relative permeabilities from the traditionally accepted “cubic ratio” behavior.
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effects of fractal surface roughness and lithology on single and multiphase flow in a single fracture an experimental investigation
International Journal of Multiphase Flow, 2015Co-Authors: Tayfun Babadagli, Kayhan DeveliAbstract:Abstract This paper presents qualitative and quantitative analysis of single and multiphase flow in a single fracture based on experimental results and demonstrates relationships between the roughness and fluid movement and distribution. Experiments were conducted on seven perfectly-matching and tightly-closed rough model fractures reproduced from the single fractures of lithologically different seven rock blocks that were jointed artificially through laboratory indirect tensile tests. Transparent upper and opaque lower walls of these models facilitated the visualization of the flow experiments. Rough surfaces of the model fractures were first digitized. Then, using the gathered data in variogram analysis, surface roughness was quantified by fractal dimension. Another roughness quantification parameter was also handled as the ratio between total fracture surface area and planar surface area. Experimental measurements of flow were quantitatively correlated to surface roughness under different normal loading (aperture) conditions. Also, constant rate immiscible displacement experiments were performed to assess the roughness effect represented by seven different lithologies and wettability effect controlled by the material used in manufacturing the fracture samples on the Residual Saturation development.
Marina Peruvkhina - One of the best experts on this subject based on the ideXlab platform.
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multi level co2 injection testing and monitoring at the south west hub in situ laboratory
Energy Procedia, 2018Co-Authors: Karsten Michael, Tess Dance, Barry Freifeld, Linda Stalker, Arsham Avijegon, Ludovic Ricard, Claudio Delle Piane, Mark Woitt, Jo Myers, Marina PeruvkhinaAbstract:Abstract The In-Situ Laboratory Project entails completing, instrumenting and pump testing five intervals in an existing well and injecting a small volume of CO2 for testing purposes into the Lesueur Formation at the South West Hub project in Western Australia. The project commenced in the middle of October 2016 and is scheduled to run until the end of April 2019, with hydraulic testing and CO2 injection planned towards the end of 2018. The purpose is to aid demonstration of the commercial viability of geologically storing carbon and contribute to broadening the portfolio of globally evaluated geological settings for storage via testing of a more than 1000 m thick injection reservoir in which CO2 migration is largely governed by Residual Saturation and dissolution trapping. The project will develop the first part of an enduring research facility at the South West Hub to enable further research of a geological environment that has more uncertainty than many other current projects; i.e. in the case of the South West Hub there is uncertainty around the extent of a regional seal.
Tess Dance - One of the best experts on this subject based on the ideXlab platform.
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multi level co2 injection testing and monitoring at the south west hub in situ laboratory
Energy Procedia, 2018Co-Authors: Karsten Michael, Tess Dance, Barry Freifeld, Linda Stalker, Arsham Avijegon, Ludovic Ricard, Claudio Delle Piane, Mark Woitt, Jo Myers, Marina PeruvkhinaAbstract:Abstract The In-Situ Laboratory Project entails completing, instrumenting and pump testing five intervals in an existing well and injecting a small volume of CO2 for testing purposes into the Lesueur Formation at the South West Hub project in Western Australia. The project commenced in the middle of October 2016 and is scheduled to run until the end of April 2019, with hydraulic testing and CO2 injection planned towards the end of 2018. The purpose is to aid demonstration of the commercial viability of geologically storing carbon and contribute to broadening the portfolio of globally evaluated geological settings for storage via testing of a more than 1000 m thick injection reservoir in which CO2 migration is largely governed by Residual Saturation and dissolution trapping. The project will develop the first part of an enduring research facility at the South West Hub to enable further research of a geological environment that has more uncertainty than many other current projects; i.e. in the case of the South West Hub there is uncertainty around the extent of a regional seal.
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observations of carbon dioxide Saturation distribution and Residual trapping using core analysis and repeat pulsed neutron logging at the co2crc otway site
International Journal of Greenhouse Gas Control, 2016Co-Authors: Tess Dance, Lincoln PatersonAbstract:Abstract Time-lapse pulsed-neutron well logging has been applied at the CO2CRC Otway site to measure changes in carbon dioxide Saturation profiles across an injection interval. Three stages of contrasting Saturation were logged: when the formation was fully water saturated; after CO2 was injected; and after water was injected to drive the CO2 to Residual Saturation. This allowed for a unique opportunity to observe changing fluid Saturation responding to relative permeability hysteresis at the field scale as part of a controlled experiment. The high vertical resolution of the logs (
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overview of the co2crc otway Residual Saturation and dissolution test
Energy Procedia, 2013Co-Authors: Lincoln Paterson, Tess Dance, Tara C Laforce, Jonathan Ennisking, Chris Boreham, Mark Bunch, Barry Freifeld, Ralf R Haese, Charles Jenkins, Matthias RaabAbstract:Residual and dissolution trapping are important mechanisms for secure geological storage of carbon dioxide. When appraising a potential site, it is desirable to have accurate field-scale estimates of the proportion of trapping by these mechanisms. For this purpose a short single-well test has been conceived that could be implemented before largescale injection. To test this concept in the field, a Residual Saturation and dissolution test sequence was conducted at the CO2CRC Otway site during 2011. The test involved injection of 150 tonnes of pure carbon dioxide followed by 454 tonnes of formation water to drive the carbon dioxide to Residual Saturation. A variety of methods for measuring Saturation were applied to the injection zone so the results could be compared. Here we provide an overview of the field-test sequence and the measurement methods.
