A5043435795- CO2 Sequestration and Geologic Interactions
- Reservoir Engineering and Simulation Methods
- Hydraulic Fracturing and Reservoir Analysis
- Enhanced Oil Recovery Techniques
- Advanced Mathematical Modeling in Engineering
- Groundwater flow and contamination studies
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Seismic Imaging and Inversion Techniques
- Advanced Numerical Methods in Computational Mathematics
- Geological Modeling and Analysis
- Carbon Dioxide Capture Technologies
- Drilling and Well Engineering
- NMR spectroscopy and applications
- Lattice Boltzmann Simulation Studies
- Geological formations and processes
- Geothermal Energy Systems and Applications
- Grouting, Rheology, and Soil Mechanics
- Composite Material Mechanics
- Oil and Gas Production Techniques
- Landslides and related hazards
- Atmospheric and Environmental Gas Dynamics
- Rock Mechanics and Modeling
- Dam Engineering and Safety
- Hybrid Renewable Energy Systems
Heriot-Watt University Malaysia
1994-2024
Heriot-Watt University
2012-2023
University of Bergen
2012
Petronas (Malaysia)
2002
University of Edinburgh
1989
The central objective of this study is to improve the understanding flow behaviour during hydrogen (H2) storage in subsurface porous media, with a cushion gas carbon dioxide (CO2). In study, we investigate interactions between various factors driving behaviour, including underlying permeability heterogeneity, viscous instability, and balance gravity forces. particular, impact CO2 solubility water on level H2 purity. This effect demonstrated for first time context storage. We have performed...
Using data from an outcrop characterization of a sandstone-rich turbidite channel fill (the so-called Quarry in the Ainsa basin), several stochastic facies models were constructed at bed-scale resolution (cells 2.5 m [8 ft] wide and 0.05 [2 in.] thick). Several industry-standard reservoir-modeling algorithms employed: truncated Gaussian simulation, sequential indicator multiple-point geostatistics, object-based methods with varying degrees complexity. The degree similarity (i.e., realism)...
Assessing microbial risks is key to feasible hydrogen storage in geological formations. This work quantitatively analyses the impacts of bio-methanation on performance. Fine-scale flow simulations, coupled with reaction, are presented analyse its impact Based reported rates literature, methanogenesis may slightly degrade recovery performance but considered minor compared issue gas mixing. The a time scale months (330 days) becomes observable system configured here, when methanation rate...
Summary In recent years, the impact of small-scale permeability structure on hydrocarbon recovery has been demonstrated, and upscaling procedures, such as geopseudo method, have developed to scale-up from lamina scale using hierarchy geological length scales. However, is very time consuming, so many engineers still input rock curves into large-scale simulations. this study, we show how process may be speeded up steady-state methods for calculating pseudofunctions. Two examples are used...
Abstract The effects of different levels geological heterogeneity on a fluid displacement process may be captured at larger scale using scaleup techniques. In the context reservoir simulation, these are algorithms which should reproduce results fine grid calculations coarser grid. These techniques referred to as pseudo-isation, main objective being produce pseudo-functions can used coarse When carried out successfully, (e.g. pseudo relative permeabilities) incorporate interaction between...
Time-lapse seismic monitoring of CO2 geological sequestration activities is a crucial process to ascertain continued containment and conformance within the subsurface storage site. produces 3D image injected plume subsurface, helping identify migration pathways determine if where leakage has occurred. Planning time-lapse campaign site-specific that involves multidisciplinary effort in building computational models, reservoir fluid flow simulations modelling. It common workflow oil gas...
The calculation of pseudo-relative permeabilities can be speeded up considerably by using steady-state methods. capillary equilibrium limit may assumed at small scales (30 cm or less), when the flood rate is low. At high flow rates and larger distance scales, we use a viscous-dominated method which assumes constant fractional flow. Steady-state pseudos also calculated intermediate fine-scale simulations, allowing to come into different levels. aim this paper assess accuracy scale-up for...
Summary Geologists often generate highly heterogeneous descriptions of reservoirs, containing complex structures which are likely to give rise very tortuous flow paths. However, these models contain too many grid cells for multiphase simulation, and the number must be reduced by upscaling reservoir simulation. Conventional methods have difficulty in representation paths, mainly because inappropriate assumptions concerning boundary conditions. An accurate practical method is therefore...
Summary Estimation of carbon dioxide (CO2)-storage capacity is a key step in the appraisal CO2-storage sites. Different calculation methods may lead to widely diverging values. The compressibility method commonly used static for estimating storage saline aquifers: It simple, easy use, and requires minimum input data. Alternatively, numerical reservoir simulation provides dynamic that includes Darcy flow calculations. More data are required simulation, it more computationally intensive, but...
The effects of small-scale structure are frequently ignored in reservoir simulation, although they may have a significant effect on hydrocarbon recovery. Many sandstones exhibit lamination, and such rock structures, permeability vary by an order magnitude over distances centimetre or less. Frequently, laminations inclined with respect to the pressure gradient, which gives rise cross-flow within unit. In this case tensor be used represent effective bed. paper geological single-phase flow is...
ABSTRACT Fluid flow within a porous medium is governed by both the fluid mechanics and rock heterogeneity level type. Here, we model permeability as random correlated field. The process first contact miscible viscous displacement at unit adverse mobility ratios. We investigate various regimes that are possible discuss their significance. point out importance of effective aspect ratio, which related to vertical equilibrium, in determining global regime.
Abstract Upscaling in highly heterogeneous reservoir models is a very challenging procedure, despite much research having been carried out over the past few decades.The fluid flow depends on well locations, and crossflow may be significant. Traditional upscaling approaches such as pressure solution method with locally applied boundary conditions, inaccurate. In two-phase systems,such waterfloods, accurate reproduction of flood front also problematic.Two-phase often impractical,but using only...