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Alexandra Maskell
University of Cambridge
GeologyGeochemistryCaprockAquiferGroundwater
8Publications
4H-index
119Citations
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Publications 8
Newest
#1Alexandra Maskell (University of Cambridge)H-Index: 4
#2Peter J. Scott (University of Cambridge)H-Index: 5
Last. Mike J. Bickle (University of Cambridge)H-Index: 57
view all 4 authors...
Funding for Carbon Storage research at the University of Cambridge was provided by the Natural Environment Research Council (NERC) to the CRIUS consortium (NE/F004699/1), Shell Global Solutions International, and the U.K. Department of Energy and Climate Change (DECC) through a CCS Innovation grant. A.M. was supported by an EPSRC doctoral training grant.
1 CitationsSource
#1Samuel S. PeglerH-Index: 7
#2Alexandra MaskellH-Index: 4
Last. Mike J. BickleH-Index: 57
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This paper presents fundamental analysis of the injection and release of fluid into porous media or geological reservoirs saturated by a different fluid undergoing a background flow, and tests the predictions using analogue laboratory experiments. The study reveals new results important for an understanding of the transport of hazardous contaminants through aquifers and the long-term fate of carbon dioxide ( ) in geological sequestration. Using numerical and asymptotic analysis, we describe a va...
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#1Florence Chen (University of Cambridge)H-Index: 1
#2Alexandra V. Turchyn (University of Cambridge)H-Index: 24
Last. Mike J. Bickle (University of Cambridge)H-Index: 57
view all 7 authors...
Abstract In order to assess the long-term security of geologic carbon storage, it is crucial to study the geochemical behavior of sulfur in reservoirs that store CO2. Fossil fuel combustion may produce mixtures of carbon dioxide and sulfur gases, and the geochemical effects of sulfur–CO2 cosequestration are poorly understood. This study examines sulfur mineralization from a core drilled in a stacked sequence of natural CO2 reservoirs near the town of Green River, Utah. These reservoirs include t...
10 CitationsSource
#1Niko Kampman (University of Cambridge)H-Index: 14
#2Andreas Busch (Royal Dutch Shell)H-Index: 33
Last. Mike J. Bickle (University of Cambridge)H-Index: 57
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Storage of anthropogenic CO2 in geological formations relies on a caprock as the primary seal preventing buoyant super-critical CO2 escaping. Although natural CO2 reservoirs demonstrate that CO2 may be stored safely for millions of years, uncertainty remains in predicting how caprocks will react with CO2-bearing brines. This uncertainty poses a significant challenge to the risk assessment of geological carbon storage. Here we describe mineral reaction fronts in a CO2 reservoir-caprock system exp...
29 CitationsSource
#1Alexandra Maskell (University of Cambridge)H-Index: 4
#1Alexandra Maskell (University of Cambridge)H-Index: 4
#2Niko Kampman (Royal Dutch Shell)H-Index: 14
Last. Mike J. Bickle (University of Cambridge)H-Index: 57
view all 5 authors...
The dissolution of silicate minerals by CO2-rich fluids and the subsequent precipitation of CO2 as carbonate minerals represent a means of permanently storing anthropogenic CO2 waste products in a solid and secure form. Modelling the progression of these reactions is hindered by our poor understanding of the rates of mineral dissolution–precipitation reactions and mineral surface properties in natural systems. This study evaluates the chemical evolution of groundwater flowing through a basalt aq...
3 CitationsSource
#1Niko Kampman (University of Cambridge)H-Index: 14
#2Mike J. Bickle (University of Cambridge)H-Index: 57
Last. Andreas Busch (Royal Dutch Shell)H-Index: 33
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This paper presents the initial results of a scientific drilling project to recover core and pressurized fluid samples from a natural CO2 reservoir, near the town of Green River, Utah. The drilling targeted a stacked sequence of CO2-charged Jurassic sandstone reservoirs and caprocks, situated adjacent to a CO2-degassing normal fault. This site has actively leaked CO2 from deep supercritical CO2 reservoirs at depth > 2 km within the basin for over 400,000 years. The project objectives were to gat...
51 CitationsSource
#1Andreas Busch (Royal Dutch Shell)H-Index: 33
#2Niko Kampman (Lancaster University)H-Index: 14
Last. Morgan F. Schaller (RU: Rutgers University)H-Index: 11
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Understanding the long-term response of CO2 injected into porous reservoirs is one of the most important aspects to demonstrate safe and permanent storage. In order to provide quantitative constraints on the long-term impacts of CO2-charged fluids on the integrity of reservoir-caprock systems we recovered some 300m of core from a scientific drill hole through a natural CO2 reservoir, near Green River, Utah. We obtained geomechanical, mineralogical, geochemical, petrophysical and mineralogical la...
10 CitationsSource
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