A5082597658- Enhanced Oil Recovery Techniques
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- CO2 Sequestration and Geologic Interactions
- Groundwater flow and contamination studies
- Reservoir Engineering and Simulation Methods
- NMR spectroscopy and applications
- Lattice Boltzmann Simulation Studies
- Seismic Imaging and Inversion Techniques
- Drilling and Well Engineering
- Methane Hydrates and Related Phenomena
- Advanced Mathematical Modeling in Engineering
- Petroleum Processing and Analysis
- Geophysical and Geoelectrical Methods
- Carbon Dioxide Capture Technologies
- Theoretical and Computational Physics
- Heat and Mass Transfer in Porous Media
- Soil and Unsaturated Flow
- Advanced Numerical Methods in Computational Mathematics
- Generative Adversarial Networks and Image Synthesis
- Atmospheric and Environmental Gas Dynamics
- Advanced X-ray and CT Imaging
- Surface Modification and Superhydrophobicity
- Medical Imaging Techniques and Applications
- Oil and Gas Production Techniques
Imperial College London
2016-2025
Imperial Valley College
2009-2024
Shell (Netherlands)
2024
Politecnico di Milano
2013-2023
Institute of Deep-Sea Science and Engineering
2023
Chinese Academy of Sciences
2023
University of Florida
2021
Geological Society of London
2018
British Geological Survey
2018
Burlington College
2018
In recent years, Carbon Capture and Storage (Sequestration) (CCS) has been proposed as a potential method to allow the continued use of fossil-fuelled power stations whilst preventing emissions CO2 from reaching atmosphere. Gas, coal (and biomass)-fired can respond changes in demand more readily than many other sources electricity production, hence importance retaining them an option energy mix. Here, we review leading capture technologies, available short long term, their technological...
Pore-scale imaging and modelling – digital core analysis is becoming a routine service in the oil gas industry, has potential applications contaminant transport carbon dioxide storage. This paper briefly describes underlying technology, namely of pore space rocks from nanometre scale upwards, coupled with suite different numerical techniques for simulating single multiphase flow through these images. Three example are then described, illustrating range scientific problems that can be...
Network models that represent the void space of a rock by lattice pores connected throats can predict relative permeability once pore geometry and wettability are known. Micro-computerized-tomography scanning provides three-dimensional image space. However, these images cannot be directly input into network models. In this paper modified maximal ball algorithm, extending work Silin Patzek [D. T. Patzek, Physica A 371, 336 (2006)], is developed to extract simplified networks with parametrized...
Abstract This paper presents the results of Tenth SPE Comparative Solution Project on Upscaling. Two problems were chosen. The first problem was a small 2D gas injection problem, chosen so that fine grid could be computed easily, and both upscaling pseudoisation methods used. second waterflood large geostatistical model it hard (though not impossible) to compute true solution. Nine participants provided for one or problems.
Relative permeabilities are the key descriptors in classical formulations of multiphase flow porous media. Experimental evidence and an analysis pore‐scale physics demonstrate conclusively that relative not single functions fluid saturations they display strong hysteresis effects. In this paper, we evaluate relevance permeability when modeling geological CO 2 sequestration processes. Here concentrate on injection saline aquifers. setting is nonwetting phase, capillary trapping essential...
We show how to predict flow properties for a variety of porous media using pore‐scale modeling with geologically realistic networks. Starting network representation Berea sandstone, the pore size distribution is adjusted match capillary pressure different media, keeping rank order sizes and topology fixed. Then predictions single multiphase are made no further adjustment model. successfully relative permeability oil recovery water wet, mixed wet data sets. For flooding we introduce method...
Summary This paper presents the results of 10th SPE Comparative Solution Project on Upscaling. Two problems were chosen. The first problem was a small 2D gas-injection problem, chosen so that fine grid could be computed easily and both upscaling pseudoization methods used. second waterflood large geostatistical model, it hard (though not impossible) to compute true fine-grid solution. Nine participants provided for one or problems.
We present a predictive calculation of two-phase relative permeabilities in granular porous media formed from dense random packing equal spheres. The spatial coordinates every sphere the pack have been measured, enabling microstructure medium to be completely determined. From these data we extract network model that replicates pore space. By compacting or swelling individual spheres, may generate different porosities whose is also simulate both viscous- and capillary-dominated invasion...
To evaluate the variability of multiphase flow properties porous media at pore scale, it is necessary to acquire a number representative samples void-solid structure. While modern x-ray computer tomography has made possible extract three-dimensional images space, assessment in inherent material often experimentally not feasible. We present method reconstruct solid-void structure by applying generative neural network that allows an implicit description probability distribution represented...
A significant amount of theoretical, numerical and observational work has been published focused on various aspects capillary trapping in CO2 storage since the IPCC Special Report Carbon Dioxide Capture Storage (2005). This research placed a central role nearly every aspect geologic CO2. Capillary, or residual, – where is rendered immobile pore space as disconnected ganglia, surrounded by brine aquifer controlled fluid interfacial physics at size scale rock pores. These processes have...
Oil reservoirs are deep underground, with the oil and gas contained in porous rock at high temperatures pressures. Around 5 – 20%, of can be produced from field under its own pressure (primary production), but most fields water is injected to displace oil. This still leaves least 50% behind reservoir. Further recovery obtained by injecting carbon dioxide that both displaces dissolves remaining At 71 projects worldwide use CO2 flooding produce a total over 170 000 barrels day, worth around...
Contact angle is a principal control of the flow multiple fluid phases through porous media; however its measurement on other than flat surfaces remains challenge. A new method presented for contact between immiscible fluids at pore scale reservoir conditions (10 MPa and 50 °C) inside quarry limestone use X-ray microtomography. It applied to super-critical CO2–brine–carbonate system by resampling micro-CT data onto planes orthogonal lines, allowing vectors be traced along grain surface...
To predict multiphase flow through geologically realistic porous media, it is necessary to have a three-dimensional (3D) representation of the pore space. We use multiple-point statistics based on two-dimensional (2D) thin sections as training images generate 3D pore-space representations. Thin-section can provide statistics, which describe statistical relation between multiple spatial locations and probability occurrence particular patterns. Assuming that medium isotropic, image be...
[1] Carbon capture and storage (CCS), where CO2 is injected into geological formations, has been identified as an important way to reduce emissions the atmosphere. While there are several aquifers worldwide which injected, still uncertainty in terms of long-term fate CO2. Simulation studies have proposed capillary trapping – stranded pore-space droplets surrounded by water a rapid secure safe storage. However, no direct evidence pore-scale trapping. We imaged trapped super-critical clusters...
[1] We measure primary drainage capillary pressure and the relationship between initial residual non-wetting phase saturation for a supercritical carbon dioxide (CO2)-brine system in Berea sandstone. use semi-permeable disk (porous-plate) coreflood method. Brine CO2 were equilibrated prior to injection ensure immiscible displacement. A maximum of 85% was measured an applied 296 kPa. After brine dropped 35%; this is less than trapped 48% equivalent n-decane (oil)-brine experiment. The...
A generalized network extraction workflow is developed for parameterizing three-dimensional (3D) images of porous media. The aim this to reduce the uncertainties in conventional modeling predictions introduced due oversimplification complex pore geometries encountered natural serves as a coarse discretization surface generated from medial-axis transformation 3D image. This divides void space into individual pores and then subdivides each sub-elements called half-throat connections. Each...
The complexity of unconventional rock systems is expressed both in the compositional variance microstructure and extensive heterogeneity pore space. Visualizing quantifying oil shale before after pyrolysis permits a more accurate determination petrophysical properties which are important modeling hydrocarbon production potential. We characterize microstructural using X-ray micro-tomography (µCT), automated ultra-high resolution scanning electron microscopy (SEM), MAPS Mineralogy (Modular...
We present predictions of transport through micro-CT images porous media that include the analysis correlation structure, velocity, and dynamics evolving plume. simulate solute millimeter-sized three-dimensional a beadpack, sandstone, carbonate, representing with an increasing degree pore-scale complexity. The Navier-Stokes equations are solved to compute flow field streamline simulation approach is used move particles by advection, while random walk method employed represent diffusion. show...
We simulate transport of a solute through three-dimensional images different rock samples, with resolutions few microns, representing geological media increasing pore-scale complexity: sandpack, Berea sandstone, and Portland limestone. predict the propagators (concentration as function distance) measured on similar cores in nuclear magnetic resonance experiments dispersion coefficient Péclet number time. The behavior is explained using continuous time random walks truncated power-law...