Eric Mackay
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View article: Impact of relative timing of low salinity and polymer flooding on mechanisms by which oil recovery is improved
Impact of relative timing of low salinity and polymer flooding on mechanisms by which oil recovery is improved Open
A combination of enhanced oil recovery (EOR) methods, specifically polymer flooding and low salinity (LS) brine injection, has been shown to improve oil recovery beyond what is achievable with either method used alone. However, the optimal…
View article: Polymer Flooding Dynamics in Enhanced Oil Recovery: A Pore‐Scale Study of the Influence of Shear‐Thinning Rheology on Flow Dynamics and Recovery Efficiency
Polymer Flooding Dynamics in Enhanced Oil Recovery: A Pore‐Scale Study of the Influence of Shear‐Thinning Rheology on Flow Dynamics and Recovery Efficiency Open
This study addresses the limited understanding of how shear‐thinning polymer rheology influences enhanced oil recovery (EOR) at the pore scale. Using a pore network model and the Carreau rheological model, the impact of shear thinning unde…
View article: Inherent Errors in Current Core-Flooding Relative Permeability Data for Modelling Underground Hydrogen Storage
Inherent Errors in Current Core-Flooding Relative Permeability Data for Modelling Underground Hydrogen Storage Open
In the design and optimisation of an underground hydrogen (H2) storage facility in an aquifer or other reservoir system, the H2/water relative permeabilities (RP) are the most critical two-phase data for input to numerical simulation. In t…
View article: Impact of geochemical reactivity on desulphation requirements in a sandstone reservoir containing carbonate and sulphate minerals
Impact of geochemical reactivity on desulphation requirements in a sandstone reservoir containing carbonate and sulphate minerals Open
This paper presents an investigation of the impact of in situ chemical and geochemical interactions on oil recovery efficiency and inorganic scale management. A common technique to support the reservoir pressure is water injection, but sca…
View article: X-ray visualized unstable displacements of water by gas in sandstone slabs for subsurface gas storage
X-ray visualized unstable displacements of water by gas in sandstone slabs for subsurface gas storage Open
A series of experiments have been performed studying the displacement of water by gas in consolidated porous media at an adverse viscosity ratio of μw/μg = 100, from the perspective of subsurface gas storage. The gas/water relative permeab…
View article: Propagation of CO2 desaturation front in near wellbore region
Propagation of CO2 desaturation front in near wellbore region Open
Understanding the development and propagation of CO2 desaturated front is important for managing the potential of CO2 leakage via injection wells after cessation of CO2 injection. The CO2 desaturation front is the front at which oil become…
View article: A comprehensive equilibrium model for the phosphonate scale inhibitor-carbonate system including coupled adsorption/precipitation (Γ/Π)
A comprehensive equilibrium model for the phosphonate scale inhibitor-carbonate system including coupled adsorption/precipitation (Γ/Π) Open
Inorganic scale deposition is one of the main flow assurance issues in hydrocarbon production, and injection systems, leading to significant loss in production and subsequent expense to mitigate. Scale Inhibitors (SI) are chemicals that ar…
View article: A numerical analysis of background flow velocity effects on long-term post-injection migration of CO2 plumes in tilted storage aquifers
A numerical analysis of background flow velocity effects on long-term post-injection migration of CO2 plumes in tilted storage aquifers Open
Even though groundwater flow exists in many saline aquifers, very few studies have investigated its significance on the injected CO2 migration and trapping processes. Here, a numerical simulation approach is used to study the late post-inj…
View article: Comparison between downdip and updip groundwater flow on early CO2 migration in dipping storage aquifers
Comparison between downdip and updip groundwater flow on early CO2 migration in dipping storage aquifers Open
The impact of the aquifer dip angle and groundwater flow have been investigated in the field of carbon dioxide (CO2) storage efficiency and security. However, no consideration has been given to the significance of the direction of groundwa…
View article: Impact of CO2 solubility on design of single well tracer tests to evaluate residual saturation during carbon capture and storage
Impact of CO2 solubility on design of single well tracer tests to evaluate residual saturation during carbon capture and storage Open
Single-well tracer technique have been well applied in many petroleum industry and environmental applications. However, these tests have not been well developed for CO2 geological storage purposes to evaluate residual CO2 saturation during…
View article: Bioreaction coupled flow simulations: Impacts of methanogenesis on seasonal underground hydrogen storage
Bioreaction coupled flow simulations: Impacts of methanogenesis on seasonal underground hydrogen storage Open
Assessing microbial risks is key to feasible hydrogen storage in geological formations. This work quantitatively analyses the impacts of bio-methanation on hydrogen storage performance. Fine-scale flow simulations, coupled with the bio-met…
View article: Numerical analysis on the direction of groundwater flux effects on the early post-injection migration of a CO2 plume
Numerical analysis on the direction of groundwater flux effects on the early post-injection migration of a CO2 plume Open
Several parameters have been analysed in the field of carbon dioxide (CO2) subsurface storage efficiency and security, including the aquifer dip and background water flow, for proper selection of CO2 storage aquifer sites. However, less im…
View article: Interplay between microbial activity and geochemical reactions during underground hydrogen storage in a seawater-rich formation
Interplay between microbial activity and geochemical reactions during underground hydrogen storage in a seawater-rich formation Open
Subsurface hydrogen storage would be one of the main possible solutions for a successful energy transition in the future of world energy. However, hydrogen gas is an electron donor which may lead to microbial activity when storing hydrogen…
View article: The impact of background water flow on the early migration of a CO2 plume in a tilted aquifer during the post-injection period
The impact of background water flow on the early migration of a CO2 plume in a tilted aquifer during the post-injection period Open
The study presents a numerical modelling analysis on CO2 plume migration in a dipping storage aquifer with background flux, which incorporates residual and dissolution trapping of CO2. The purpose of this analysis is to investigate the eff…
View article: Impact of interphase component transfer on CO2 distribution and pH during CO2 injection in the subsurface
Impact of interphase component transfer on CO2 distribution and pH during CO2 injection in the subsurface Open
Single phase CO2 injection and CO2 water alternating gas (WAG) injection processes are simulated using reactive transport modelling to understand the inter-phase component transfer between CO2, brine and oil, and to address geochemical (aq…
View article: Dynamic modeling of geological carbon storage in an oil reservoir, Bredasdorp Basin, South Africa
Dynamic modeling of geological carbon storage in an oil reservoir, Bredasdorp Basin, South Africa Open
Geological carbon storage provides an efficient technology for the large-scale reduction of atmospheric carbon, and the drive for net-zero emissions may necessitate the future usage of oil reservoirs for CO 2 projects, (without oil product…