Anna Carnerup

Combining High-Resolution with Larger Volume Images for Improved Characterization of Mudstone Reservoirs

Crystallography of Biomimetic Silica Carbonate Precipitates

In this contribution, we describe the orientational distribution of the carbonate crystallites wi... more In this contribution, we describe the orientational distribution of the carbonate crystallites within some silica carbonate biomorphs. Such precipitates with biomimetic morphologies are formed in alkaline silicate solutions containing barium ions which react with carbon dioxide dissolved from ambient air. We conclude that elucidation of the detailed crystallography and crystallite patterns of a wider range of biomorphs will be vital before any models of their formation can be confirmed.

Wettability Analysis Using Micro-CT, Fesem and Qemscan, and Its Applications to Digital Rock Physics

This study presents an integrated methodology for determining the pore-scale distribution of wett... more This study presents an integrated methodology for determining the pore-scale distribution of wettability of rock samples to guide pore network modeling. Wettability was characterized by spatial registration of rock images from X-ray micro-computed tomography (MCT), Field Emission Scanning Electron Microscopy (FESEM), and Quantitative Evaluation of Minerals by SEM (QEMSCAN). The approach was applied to miniplugs of an outcrop and a reservoir sandstone, which were drained and aged in oil and underwent spontaneous and forced imbibition of brine. Tomogram acquisition after each preparation step showed that, from similarly low initial water saturation, oil recovery by spontaneous imbibition was high in the outcrop and virtually zero in the reservoir sample, while the additional recovery by forced imbibition was the opposite. These results and the pore-scale distributions of remaining oil suggest different wettabilities for each sample though their petrophysical properties (porosity and permeability) are similar. The cleaned miniplugs were then subjected to FESEM mapping of raw cut faces to visualize local wettability alteration, and to QEMSCAN of polished faces to relate this to surface mineralogy. The established wettability information was then used to assign plausible wettability parameters to pores and throats of topologically equivalent networks. The simulated oil/water displacement results for the reservoir sandstone showed good agreement with available SCAL data.

format_quoteSimulated oil/water displacement in reservoir sandstone aligned closely with SCAL data, validating the methodology employed.format_quote

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Characterization of Unconventional Reservoir Core at Multiple Scales

Unconventional Resources Technology Conference, Denver, Colorado, 12-14 August 2013, Aug 14, 2013

PETROPHYSICS, VOL. 54, NO. 3 (JUNE 2013); PAGE 216–223; 10 FIGURES Mark Knackstedt2, Anna Carneru... more PETROPHYSICS, VOL. 54, NO. 3 (JUNE 2013); PAGE 216–223; 10 FIGURES Mark Knackstedt2, Anna Carnerup2, Alexandra Golab2, Rob Sok2, Ben Young2, and Lutz Riepe3 Manuscript received by Editor May 13, 2013. 1 Originally presented at the SPWLA 53rd Annual Logging Symposium, Cartagena, Colombia, June 16-20-2012, Paper F 2 Lithicon, Suite 2 Ground oor, 73 Northbourne Avenue, Canberra ACT 2600, Australia; Email: [email protected], [email protected], [email protected], [email protected], [email protected] 3 Petronas Carigali SDN.BHD.(PCSB), KLCC Twin Towers T2, Level 11, Kuala Lumpur, Malaysia; Email: lutz_riepe@petronas. com.my Tight unconventional reservoirs have become an increasingly common target for hydrocarbon production. Exploitation of these resources requires a comprehensive reservoir description and characterization program to estimate reserves, identify properties that control production and predict fracturability. Multiscale imaging studies from the whole core to the nanometer scale can aid in understanding the multiple contributions of heterogeneity, natural fracture density, pore types, porethroat connectivity, mineral and organic content and distribution to petrophysical response and production characteristics. In this paper we present three examples of the application of multiscale imaging to challenging unconventional reservoirs: a deep, clastic tight-gas reservoir; a fractured basement reservoir; and coal-seam gas reservoir. All these samples exhibit features at multiple scales, which present major challenges to petrophysical evaluation and understanding of reservoir engineering properties. In all cases, characterization of heterogeneity and geological rock typing is undertaken at the core scale. Mineralogy and porosity/microporosity characterization is then mapped at the pore scale with varying modes of microcomputed tomography ( CT) 3D imaging. Focusedion-beam scanning electron microscopy (FIBSEM) imaging can then be used to reveal the nanoporous structure of the key phases controlling hydrocarbon movement within the core material. Petrophysical properties (porosity, permeability, elastic moduli) can also be computed for each key phase and the data upscaled using standard techniques. The presented case histories demonstrate that multiscale imaging and modeling provides a complimentary method to existing core-measurement techniques via characterization of the distribution and nature of different pore types and matrix components. This can enable improved classi cation and aids the prediction of elastic and dynamic rock properties even on rock fragments that are not suitable for conventional core analysis. In addition, the results have the potential to enhance our understanding of petrophysical, fracturing and multiphase ow processes in challenging unconventional reservoirs with low porosities and permeabilities.

Biomorphs : morphology, chemistry, and implications for the identification of early life

This thesis is the product of countless hours of sitting in labs, or with large machines, caring ... more This thesis is the product of countless hours of sitting in labs, or with large machines, caring for and fostering biomorphs. Being a custodian of biomorphs requires some patience. However, if my custodial role has come to any good, it is because of the caring of others. I have many people to thank for their intellectual and personal support during the creation of this dissertation. The origins of this thesis, not unlike the origins of life, are easily obscured. This journey began not in Canberra, but in southern Sweden and I thank Barry N inham and Zoltan Blum for encouraging me to visit the ANU. During my visit I was welcomed, challenged, and overwhelmed by the world of biomorphs. This was the first sprout of life for the thesis. The unique mix of intellectual synergies with ongoing socialising within the Department of Applied Mathematics provided an environment in which early life for ideas about biomorphs could flourish. All environments requiring a structuring principle, or principals, and my heartfelt thanks go to my supervisors. I must thank three people in particular for playing guiding and supporting roles in the life of this dissertation: Stephen, Ankie, and Andy. Stephen Hyde is a mastermind. His capacity to see across disciplines and fields, and use his keen mind for insight into my little micrometer world, has me amazed from beginning to end. Ann-Kristin Larsson has taken me from 'crayons to perfume' in teaching me crystallography, electron microscopy, and the science of the nanoworld. She has also been a supportive friend and a supplier of frequent BBQs. Andrew Christy deserves all the medals any college of sciences can boast. His scientific agility, prowess, and scholarly patience has been a great source of information and comfort, especially with geological instrumentation and analysis. Now that the conductors have been thanked, I must also thank a number of people who provided backstage support in this production. Without the help of technicians, staff and experts in the field this thesis would never have been completed. The range of experimental techniques learnt in the process is a joy to my thesis and a bore to my friends. Staff at the Electron Microscopy Unit at ANU showed constant support and interest in the project, and also let me use their large machines night after night. I also thank Ulrike Troitzsch for help with sample preparation and her analytical experience in XRD and XRF. My particular thanks goes to Sally Stowe and Frank Brink for their unlimited help with microscopy issues. My thanks also to Richard Webster at the Research School of Chemistry at ANU for his help and unlimited use of the ReactIR machine. I am also pleased to thank David Dunstan at the Department of Chemical and Biomolecular Engineering, the University of Melbourne, for the use and help with dynamic light scattering. I also thank Peta Davies at the NMR facility of the Research School of Chemistry at ANU, for help with NMR issues. My sincerest appreciation also goes to John Fitzgerald and Harri Kokkonen at RSES, for the preparation of thin sections of biomorphs and guidance on TEM analysis. Dr. Vincent Otieno-Alego, now at Federal Police, also receives my gratitude for his assistance with Raman spectroscopy experiments conducted at University of Canberra. Cathy Gillespie at John Curtin School of Medical Research for Fluorescence microscopy provided valuable assistance with fluorescence microscopy. Matthias Kellermeier and Alina Voinescu helped with sample preparation of biomorphs during their visits to the ANU from Regensburg. Across distant shores, Juan Manuel Garcia-Ruiz encouraged me to delve into the world of biomorphs. My heartfelt gratitude also goes to Desmond Morris for his kind permission to reproduce his art in this dissertation. Within the Department of Applied Mathematics lurk colleagues, friends, and fellow night creatures, who provided essential feedback on the dissertation. Should Australia ever need a Batman, equipped with Batcave and scientific know-how, they may call upon Tim Senden. This ginger-nut superbrain provided the kind of scientific knowledge that could not only confound any villian in Gotham City, but greatly progressed my thesis. May he never turn to evil. Along with Tim, A rthur Sakellariou and Tim Sawkins provided vital X-ray CT expertise and built a new stage for small samples. In addition to his role as local celebrity, Vince Craig spared time for valuable discussions on silica and CTAB chemistry, as well as colloidal matters. Vince also deserves thanks for providing me with an uncluttered environment in which to slay the beast that is a dissertation. In addition to Tim and Vince, I thank Jochen Brocks for reading and commenting on draft chapters. Other friends and colleagues in Applied Mathematics, and the research school, provided more holistic support. My thanks to Vanessa Robins, Kariös Claxton, Gerd Schroeder, Joanne Harrison, and Christine Henry for keeping me fed and watered. It would be remiss of me not to thank my wonderful husband, Len Seabrooke, who kept me laughing and commuted between Copenhagen and Canberra during the final legs of the dissertation. Apparently the seafood bar in Terminal 4 at Heathrow is not bad. Although I call this man 'bläbär', he is more than proficient in looking after me. I also thank my family in Sverige, Australia, and France. My love to them all.

format_quoteBiomorphs show chemical and morphological resemblance to ancient microfossils, challenging the abiotic vs. biotic distinction essential in early life identification.format_quote

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Maximising the value of digital core analysis for carbon sequestration site assessment: final report on geochemical reactivitiy studies of core material using ScCO2. Technical report for Project 7-0311-0128, Sub-project 5: undertake time series (4D) imaging and conventional experimental studies t...

ANLEC R&D, Aug 13, 2015

Performed time-step 3D imaging before and after geochemical reaction with CO2:brine Performed por... more Performed time-step 3D imaging before and after geochemical reaction with CO2:brine Performed pore-scale 3D imaging before and after reaction of the reservoir, seal and over-lying formation. Pure CO2 and mixed gas containing SO2 and O2 were tested. The images show some localised changes including the dissolution of some carbonate minerals, degradation of some minerals and precipitation of others

Subsurface Fluid Characterization Using Downhole and Core NMR T 1 - T 2 Maps Combined with Pore-Scale Imaging Techniques

Petrophysics, 2015

Combining High-Resolution with Larger Volume Images for Improved Characterization of Mudstone Reservoirs

Interfacial properties of lipid sponge-like nanoparticles and the role of stabilizer on particle structure and surface interactions

Soft Matter, 2019

Stabilizer P80 concentrated to lipid liquid crystalline particle surface, but contributes also to... more

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Organic-Hosted Pore System in the Cretaceous Mowry Formation, Wyoming, Usa

Geological Society of America Abstracts with Programs, 2016

Digital core analysis of Lower Ahmadi to Upper Wara formations

SPE Kuwait Oil and Gas Show and Conference, 2015

Bioastronomy 2004: Habitable Worlds, Reykjavik, Iceland, July 12–16, 2004

Astrobiology, 2004

We have modeled, using the atmosphere code Phoenix, the photosphere structures and spectral distr... more We have modeled, using the atmosphere code Phoenix, the photosphere structures and spectral distribution of all known Extrasolar Giant Planets (EGPs) to this day. Since EGPs are often brighter, more massive and larger than telluric planets, they will be more readily detected in the future transit surveys (COROT, KEPLER, Eddington), and be the most directly observable using current technology (e.g., by nulling interferometry with the GENIE experiment). In this paper we summarize the spectral properties of EGPs as a function of their orbital distance, phase as viewed from the earth, mass and age, and type of primary star. We establish the most favorable observation conditions (i.e., maximum luminosity contrast of the planet to the primary star). We also explore uncertainties tied to the chemical composition of the atmosphere, and the presence of cloud layers, and study constraining cases such as HD209458b, OGLE-TR56b, and Jupiter.

format_quoteMars Odyssey data suggests 10% water in Martian regolith may be bound in minerals, challenging assumptions about Martian hydration.format_quote

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Biomorphs : morphology, chemistry, and implications for the identification of early life

This thesis is the product of countless hours of sitting in labs, or with large machines, caring ... more This thesis is the product of countless hours of sitting in labs, or with large machines, caring for and fostering biomorphs. Being a custodian of biomorphs requires some patience. However, if my custodial role has come to any good, it is because of the caring of others. I have many people to thank for their intellectual and personal support during the creation of this dissertation. The origins of this thesis, not unlike the origins of life, are easily obscured. This journey began not in Canberra, but in southern Sweden and I thank Barry N inham and Zoltan Blum for encouraging me to visit the ANU. During my visit I was welcomed, challenged, and overwhelmed by the world of biomorphs. This was the first sprout of life for the thesis. The unique mix of intellectual synergies with ongoing socialising within the Department of Applied Mathematics provided an environment in which early life for ideas about biomorphs could flourish. All environments requiring a structuring principle, or principals, and my heartfelt thanks go to my supervisors. I must thank three people in particular for playing guiding and supporting roles in the life of this dissertation: Stephen, Ankie, and Andy. Stephen Hyde is a mastermind. His capacity to see across disciplines and fields, and use his keen mind for insight into my little micrometer world, has me amazed from beginning to end. Ann-Kristin Larsson has taken me from 'crayons to perfume' in teaching me crystallography, electron microscopy, and the science of the nanoworld. She has also been a supportive friend and a supplier of frequent BBQs. Andrew Christy deserves all the medals any college of sciences can boast. His scientific agility, prowess, and scholarly patience has been a great source of information and comfort, especially with geological instrumentation and analysis. Now that the conductors have been thanked, I must also thank a number of people who provided backstage support in this production. Without the help of technicians, staff and experts in the field this thesis would never have been completed. The range of experimental techniques learnt in the process is a joy to my thesis and a bore to my friends. Staff at the Electron Microscopy Unit at ANU showed constant support and interest in the project, and also let me use their large machines night after night. I also thank Ulrike Troitzsch for help with sample preparation and her analytical experience in XRD and XRF. My particular thanks goes to Sally Stowe and Frank Brink for their unlimited help with microscopy issues. My thanks also to Richard Webster at the Research School of Chemistry at ANU for his help and unlimited use of the ReactIR machine. I am also pleased to thank David Dunstan at the Department of Chemical and Biomolecular Engineering, the University of Melbourne, for the use and help with dynamic light scattering. I also thank Peta Davies at the NMR facility of the Research School of Chemistry at ANU, for help with NMR issues. My sincerest appreciation also goes to John Fitzgerald and Harri Kokkonen at RSES, for the preparation of thin sections of biomorphs and guidance on TEM analysis. Dr. Vincent Otieno-Alego, now at Federal Police, also receives my gratitude for his assistance with Raman spectroscopy experiments conducted at University of Canberra. Cathy Gillespie at John Curtin School of Medical Research for Fluorescence microscopy provided valuable assistance with fluorescence microscopy. Matthias Kellermeier and Alina Voinescu helped with sample preparation of biomorphs during their visits to the ANU from Regensburg. Across distant shores, Juan Manuel Garcia-Ruiz encouraged me to delve into the world of biomorphs. My heartfelt gratitude also goes to Desmond Morris for his kind permission to reproduce his art in this dissertation. Within the Department of Applied Mathematics lurk colleagues, friends, and fellow night creatures, who provided essential feedback on the dissertation. Should Australia ever need a Batman, equipped with Batcave and scientific know-how, they may call upon Tim Senden. This ginger-nut superbrain provided the kind of scientific knowledge that could not only confound any villian in Gotham City, but greatly progressed my thesis. May he never turn to evil. Along with Tim, A rthur Sakellariou and Tim Sawkins provided vital X-ray CT expertise and built a new stage for small samples. In addition to his role as local celebrity, Vince Craig spared time for valuable discussions on silica and CTAB chemistry, as well as colloidal matters. Vince also deserves thanks for providing me with an uncluttered environment in which to slay the beast that is a dissertation. In addition to Tim and Vince, I thank Jochen Brocks for reading and commenting on draft chapters. Other friends and colleagues in Applied Mathematics, and the research school, provided more holistic support. My thanks to Vanessa Robins, Kariös Claxton, Gerd Schroeder, Joanne Harrison, and Christine Henry for keeping me fed and watered. It would be remiss of me not to thank my wonderful husband, Len Seabrooke, who kept me laughing and commuted between Copenhagen and Canberra during the final legs of the dissertation. Apparently the seafood bar in Terminal 4 at Heathrow is not bad. Although I call this man 'bläbär', he is more than proficient in looking after me. I also thank my family in Sverige, Australia, and France. My love to them all.

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Papers by Anna Carnerup