Publications
544 results found
Fenwick DH, Blunt MJ, 1998, Network modeling of three-phase flow in porous media, SPE Journal, Vol: 3, ISSN: 1086-055X
We present a network model of three-phase flow in water-wet porous media. To explain the high oil recoveries in gas injection and gravity drainage experiments, we show that the mechanism for oil recovery is flow through connected oil layers in the pore space that are on the order of a micron thick. We then describe a simple model for the configuration of oil, water, and gas in a single pore and present an approximate expression for the conductance of oil layers. We use this expression to derive the oil relative permeability when flow is dominated by layer drainage. We show that for low oil and water saturations kro approx. So2, consistent with the results of several experiments. To predict kro for the full range of oil saturation we use a capillary equilibrium-based network model that can simulate any sequence of oil, water, and gas injection. We introduce a self-consistency procedure to ensure that the correct sequence of saturation changes is used in the network model to compute relative permeability. We then present relative permeabilities and oil recoveries for gas injection into different initial oil saturations, and for waterflooding a reservoir containing gas and oil. We show that the relative permeabilities are strongly affected by the fluid properties and by the type of displacement process.
Fenwick DH, Blunt MJ, 1998, Three-dimensional modeling of three phase imbibition and drainage, ADVANCES IN WATER RESOURCES, Vol: 21, Pages: 121-143, ISSN: 0309-1708
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- Citations: 161
Di Carlo DA, Sahni A, Blunt MJ, 1998, The effect of wettability on three-phase relative permeability, Pages: 869-876
We study three-phase flow in water-wet, oil-wet, and fractionally-wet sandpacks. We use CT scanning to measure directly the oil and water relative permeabilites for three-phase gravity drainage. In an analogue experiment, we measure pressure gradients in the gas phase to determine the gas relative permeability. Thus we find all three relative permeabilities as a function of saturation. We find that the gas relative permeability is approximately twice as high in a water-wet system than in an oil-wet system at the same gas saturation. The water relative permeability in the water-wet pack and the oil relative permeability in the oil-wet pack are similar. In the water-wet medium the oil relative permeability scales as kro - So4 for So > Sor, where Sor is the waterflood residual oil saturation. With octane as the oil phase, kro - 5o2 for So < Sor, while with decane as the oil phase, kro falls sharply for So < Sor- The water relative permeability in the oil-wet medium resembles the oil relative permeability in the water-wet medium for a non-spreading oil such as decane. These observations can be explained in terms of wetting, spreading, and the pore scale configurations of fluid.
Blunt MJ, 1998, Physically Based Network Modeling of Multiphase Flow in Intermediate-Wet Media, Journal of Petroleum Science and Engineering, Pages: 117-125
Keller AA, Blunt MJ, Roberts PV, 1998, Behavior of Dense Non-Aqueous Phase Liquid in Fractured Media under Two-Phase Flow Conditions, EnviroMEET '98, University of California, Irvine, July 21-23
Schaefer CE, Kosson DS, Blunt MJ, et al., 1998, Diffusive Release of Aromatic Hydrocarbons in the Presence of Immobile NAPL, EnviroMEET '98, University of California, Irvine, July 21-23
Peters BM, Zhou D, Blunt MJ, 1998, Experimental Investigation of Scaling Factors that Describe Miscible Floods in Layered Systems, SPE/DOE Improved Oil Recovery Symposium, Tulsa, OK, April
Zhou D, Blunt MJ, 1998, Wettability Effects in Three-Phase Gravity Drainage, Journal of Petroleum Science and Engineering, Pages: 203-211
Kawanashi T, Hayashi Y, Roberts PV, et al., 1998, Fluid-Fluid Interfacial Area during Two and Three phase Fluid Displacement in Porous Media: A Network Model Study, International Conference and Special Seminar on Groundwater Quality: Remediation and Protection, Tubingen, Germany, September
Fenwick DH, Blunt MJ, 1998, Three dimensional, Three Phase Network Modeling of Drainage and Imbibition, Advances in Water Resources, Vol: 21, Pages: 121-143
Di Carlo DA, Sahni A, Blunt MJ, 1998, Three-Phase Relative Permeability for Water-Wet and Oil-Wet Sandpacks, Evaluation of Reservoir Wettability and its Effect on Oil Recovery, Trondheim, Norway, June
Sahni A, Burger J, Blunt MJ, 1998, Measurement of Three Phase Relative Permeability during Gravity Drainage Using CT Scanning, SPE/DOE Improved Oil Recovery Symposium, Tulsa, OK, April
Fenwick DH, Blunt MJ, 1998, Network Modeling of Three Phase Flow in Porous Media, SPE Journal, Pages: 86-97
Hughes RG, Blunt MJ, 1998, Network Modeling of Multiphase Flow in Fractured Porous Media, 6th European Conference on the Mathematics of Oil Recovery, Peebles, Scotland, September 8-11
Ronen D, Scher H, Blunt M, 1997, On the structure and flow processes in the capillary fringe of phreatic aquifers, TRANSPORT IN POROUS MEDIA, Vol: 28, Pages: 159-180, ISSN: 0169-3913
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- Citations: 40
Fenwick DH, Blunt MJ, 1997, Use of network modeling to predict saturation paths, relative permeabilities and oil recovery for three phase flow in porous media, Proceedings - SPE Annual Technical Conference and Exhibition, Vol: Sigma, Pages: 383-396
We present a network model of three phase flow in water-wet porous media. To explain the high oil recoveries in gas injection and gravity drainage experiments, we show that the mechanism for oil recovery is flow through connected oil layers in the pore space that are on the order of a micron thick. We then describe a simple model for the configuration of oil, water and gas in a single pore and present an approximate expression for the conductance of oil layers. We use this expression to derive the oil relative permeability when flow is dominated by layer drainage. We show that for low oil and water saturations kro to approximately So2, consistent with the results of several experiments. To predict kro for the full range of oil saturations we use a capillary equilibrium based network model that can simulate any sequence of oil, water and gas injection. We introduce a self-consistency procedure to ensure that the correct sequence of saturation changes is used in the network model to compute relative permeability. We then present relative permeabilities and oil recoveries for gas injection into different initial oil saturations, and for waterflooding a gas condensate reservoir. We show that the relative permeabilities are strongly affected by the fluid properties and by the type of displacement process.
Blunt MJ, 1997, Pore Level Modeling of the Effects of Wettability, SPE Journal, Vol: 2, Pages: 494-510
Zhou D, Blunt MJ, Orr FM, 1997, Hydrocarbon Drainage Along Corners of Noncircular Capillaries, Journal of Colloid and Interface Science, Vol: 187, Pages: 11-21
Thiele MR, Batycky RP, Blunt MJ, 1997, A Streamline-Based 3D Field-Scale Compositional Reservoir Simulator, SPE Annual Technical Conference and Exhibition, San Antonio, TX, October 5-8
Batycky RP, Blunt MJ, Thiele MR, 1997, A 3D Field-Scale Streamline-Based Reservoir Simulator, SPE Reservoir Engineering, Vol: 12, Pages: 246-254
Zhou D, Blunt MJ, 1997, Effect of Spreading Coefficient on the Distribution of Light Non-Aqueous Phase Liquid in the Subsurface, Journal of Contaminant Hydrology, Vol: 25, Pages: 1-19
Blunt MJ, 1997, Effects of Heterogeneity and Wetting on Relative Permeability using Pore Level Modeling, SPE Journal, Vol: 2, Pages: 70-87
Keller AA, Blunt MJ, Roberts PV, 1997, Micromodel Observation of the Role of Oil Layers in Three Phase Flow, Transport in Porous Media, Vol: 26, Pages: 277-297
Ronen D, Scher H, Blunt MJ, 1997, On the Structure and Transport Properties in the Capillary Fringe of Phreatic Aquifers, Transport in Porous Media, Vol: 28, Pages: 159-180
Batycky RP, Blunt MJ, Thiele MR, 1996, 3D field scale streamline simulator with gravity and changing well conditions, Pages: 467-476
A 3D streamline technique is developed for modeling gravity effects in first-contact miscible displacements and changing well conditions which resulted from infill drilling or well conversions. Streamlines from injectors to producers in a 3D system are treated as 1D systems along which 1D flow solutions can be mapped. The method concentrates on mapping the existing distribution of state variables from the underlying Cartesian grid onto the streamlines, moving the variables forward in time and space along the streamlines using a 1D numerical solver, and then mapping the solution back onto the underlying grid.
Batycky RP, Thiele MR, Blunt MJ, 1996, A Streamline Simulator to Model Field Scale Three-Dimensional Flow, 5th European Conference on the Mathematics of Oil Recovery, Leoben, Austria, September 3-6
Zhou D, Blunt MJ, Orr FM, 1996, Effect of Wettability and Spreading Coefficient on Three-Phase Distributions, 17th IEA Collaborative Project on Enhanced Oil Recovery Workshop and Symposium, Sydney, Australia, September 30 - October 2
Thiele MR, Rao SE, Blunt MJ, 1996, Quantifying Uncertainty in Reservoir Performance Using Streamtubes, Mathematical Geology, Vol: 28, Pages: 843-856
Sahni A, Guzman R, Blunt MJ, 1996, Theoretical Analysis of Three Phase Flow Experiments in Porous Media, SPE Annual Technical Conference and Exhibition, Denver, CO, October 6-9
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