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| ==Index map== | | ==Index map== |
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− | [[file:predicting-reservoir-system-quality-and-performance_fig9-85.png|300px|thumb|{{figure number|1}}From Sonnenberg.<ref name=Sonnenberg_1985>Sonnenberg, S. A., 1985, Tectonic and sedimentation model for Morrow sandstone deposition, Sorrento field area, Denver basin, Colorado: The Mountain Geologist, October, p. 180-191.</ref> Courtesy Rocky Mountain Association of Geologists.]] | + | [[file:predicting-reservoir-system-quality-and-performance_fig9-85.png|300px|thumb|{{figure number|1}}Location of the Sorrento field. From Sonnenberg.<ref name=Sonnenberg_1985>Sonnenberg, S. A., 1985, Tectonic and sedimentation model for Morrow sandstone deposition, Sorrento field area, Denver basin, Colorado: The Mountain Geologist, October, p. 180-191.</ref> Courtesy Rocky Mountain Association of Geologists.]] |
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| The Sorrento field is in southeastern Colorado on the north flank of the Las Animas Arch. The map in [[:file:predicting-reservoir-system-quality-and-performance_fig9-85.png|Figure 1]] shows the location of the Sorrento field. Structure is contoured on the base of the Pennsylvanian. | | The Sorrento field is in southeastern Colorado on the north flank of the Las Animas Arch. The map in [[:file:predicting-reservoir-system-quality-and-performance_fig9-85.png|Figure 1]] shows the location of the Sorrento field. Structure is contoured on the base of the Pennsylvanian. |
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| ==Morrow structure map== | | ==Morrow structure map== |
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− | [[file:predicting-reservoir-system-quality-and-performance_fig9-86.png|300px|thumb|{{figure number|1}} From Sonnenberg.<ref name=Sonnenberg_1985 /> Courtesy Rocky Mountain Association of Geologists.]] | + | [[file:predicting-reservoir-system-quality-and-performance_fig9-86.png|300px|thumb|{{figure number|1}}Circled wells represent Marmaton wells; triangles, Mississippian wells; and large X's, study wells. The rest of the oil wells produce from the Morrow. Each unit in the grid is 1 sq mi. From Sonnenberg.<ref name=Sonnenberg_1985 /> Courtesy Rocky Mountain Association of Geologists.]] |
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− | The Sorrento field reservoir is [[Pennsylvanian]] Morrow [[valley-fill sandstone]]s. As shown in the figure below, structure [[contour]]s on a marker bed above the [[Morrow Sandstone]] reflect the irregular thickness of the sandstone body and a small structural [[nose]] and [[closure]]. The oil column is [[length::70 ft]] [[depth::(20 m]]) and exceeds structural closure. This is a combination [[Structural trap system|structural]]-[[stratigraphic trap]]. [[Lithofacies_and_environmental_analysis_of_clastic_depositional_systems#Braided_and_meandering_fluvial_deposits|Fluvial sandstones]] lap onto marine shale at the margins of the valley, forming lateral [[seal]]s. | + | The Sorrento field reservoir is [[Pennsylvanian]] Morrow [[valley-fill sandstone]]s. As shown in [[:file:predicting-reservoir-system-quality-and-performance_fig9-86.png|Figure 2]], structure [[contour]]s on a marker bed above the [[Morrow Sandstone]] reflect the irregular thickness of the sandstone body and a small structural [[nose]] and [[closure]]. The oil column is [[length::70 ft]] [[depth::(20 m]]) and exceeds structural closure. This is a combination [[Structural trap system|structural]]-[[stratigraphic trap]]. [[Lithofacies_and_environmental_analysis_of_clastic_depositional_systems#Braided_and_meandering_fluvial_deposits|Fluvial sandstones]] lap onto marine shale at the margins of the valley, forming lateral [[seal]]s. |
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| In [[:file:predicting-reservoir-system-quality-and-performance_fig9-86.png|Figure 2]], circled wells represent [[Marmaton]] wells; triangles, [[Mississippian]] wells; and large X's, study wells. The rest of the oil wells produce from the Morrow. Each unit in the grid is 1 sq mi. | | In [[:file:predicting-reservoir-system-quality-and-performance_fig9-86.png|Figure 2]], circled wells represent [[Marmaton]] wells; triangles, [[Mississippian]] wells; and large X's, study wells. The rest of the oil wells produce from the Morrow. Each unit in the grid is 1 sq mi. |