Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska
The Victor Unit of the Ivishak Formation in the Prudhoe Bay Oilfield is characterized by high net-to-gross fluvial sandstones and conglomerates. The highest permeability is found within sets of cross-strata of open-framework conglomerate (OFC). These cross-strata are preserved within unit-bar deposi...
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ftwrightuniv:oai:corescholar.libraries.wright.edu:physics-2096 2023-05-15T18:03:37+02:00 Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska Gershenzon, Naum I. Soltanian, Mohamadreza Ritzi, Robert W. Dominic, David F. 2015-02-01T08:00:00Z application/pdf https://corescholar.libraries.wright.edu/physics/1035 https://corescholar.libraries.wright.edu/cgi/viewcontent.cgi?article=2096&context=physics unknown CORE Scholar https://corescholar.libraries.wright.edu/physics/1035 https://corescholar.libraries.wright.edu/cgi/viewcontent.cgi?article=2096&context=physics Physics Faculty Publications Physical Sciences and Mathematics Physics text 2015 ftwrightuniv 2021-11-21T09:31:53Z The Victor Unit of the Ivishak Formation in the Prudhoe Bay Oilfield is characterized by high net-to-gross fluvial sandstones and conglomerates. The highest permeability is found within sets of cross-strata of open-framework conglomerate (OFC). These cross-strata are preserved within unit-bar deposits and assemblages of unit-bar deposits within compound (braid)-bar deposits, and may form thief zones limiting enhanced oil recovery. We incorporate recent research that has quantified important attributes of preserved sedimentary architecture into high-resolution models. Waterflooding experiments using these models demonstrate the control that such architecture has on oil production rate, water breakthrough time, and spatial and temporal distribution of residual oil saturation. We found that when the pressure gradient is orientated perpendicular to the palaeoflow direction, the total oil production and the water breakthrough time are larger, and the remaining oil saturation is smaller, than when it is orientated parallel to palaeoflow. The pressure difference between production and injection wells does not affect sweep efficiency, although the spatial distribution of oil remaining in the reservoir critically depends on this value. Oil sweep efficiency decreases slightly with increase in the proportion of OFC cross-strata. Whether or not clusters of connected OFC span the domain does not visibly affect sweep efficiency. Text Prudhoe Bay Alaska Wright State University: CORE Scholar (Campus Online Repository) |
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Wright State University: CORE Scholar (Campus Online Repository) |
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unknown |
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Physical Sciences and Mathematics Physics |
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Physical Sciences and Mathematics Physics Gershenzon, Naum I. Soltanian, Mohamadreza Ritzi, Robert W. Dominic, David F. Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska |
topic_facet |
Physical Sciences and Mathematics Physics |
description |
The Victor Unit of the Ivishak Formation in the Prudhoe Bay Oilfield is characterized by high net-to-gross fluvial sandstones and conglomerates. The highest permeability is found within sets of cross-strata of open-framework conglomerate (OFC). These cross-strata are preserved within unit-bar deposits and assemblages of unit-bar deposits within compound (braid)-bar deposits, and may form thief zones limiting enhanced oil recovery. We incorporate recent research that has quantified important attributes of preserved sedimentary architecture into high-resolution models. Waterflooding experiments using these models demonstrate the control that such architecture has on oil production rate, water breakthrough time, and spatial and temporal distribution of residual oil saturation. We found that when the pressure gradient is orientated perpendicular to the palaeoflow direction, the total oil production and the water breakthrough time are larger, and the remaining oil saturation is smaller, than when it is orientated parallel to palaeoflow. The pressure difference between production and injection wells does not affect sweep efficiency, although the spatial distribution of oil remaining in the reservoir critically depends on this value. Oil sweep efficiency decreases slightly with increase in the proportion of OFC cross-strata. Whether or not clusters of connected OFC span the domain does not visibly affect sweep efficiency. |
format |
Text |
author |
Gershenzon, Naum I. Soltanian, Mohamadreza Ritzi, Robert W. Dominic, David F. |
author_facet |
Gershenzon, Naum I. Soltanian, Mohamadreza Ritzi, Robert W. Dominic, David F. |
author_sort |
Gershenzon, Naum I. |
title |
Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska |
title_short |
Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska |
title_full |
Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska |
title_fullStr |
Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska |
title_full_unstemmed |
Understanding the Impact of Open-Framework Conglomerates on Water-Oil Displacements: Victor Interval of the Ivishak Reservoir, Prudhoe Bay Field, Alaska |
title_sort |
understanding the impact of open-framework conglomerates on water-oil displacements: victor interval of the ivishak reservoir, prudhoe bay field, alaska |
publisher |
CORE Scholar |
publishDate |
2015 |
url |
https://corescholar.libraries.wright.edu/physics/1035 https://corescholar.libraries.wright.edu/cgi/viewcontent.cgi?article=2096&context=physics |
genre |
Prudhoe Bay Alaska |
genre_facet |
Prudhoe Bay Alaska |
op_source |
Physics Faculty Publications |
op_relation |
https://corescholar.libraries.wright.edu/physics/1035 https://corescholar.libraries.wright.edu/cgi/viewcontent.cgi?article=2096&context=physics |
_version_ |
1766174551300898816 |