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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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United States
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Oklahoma
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Blaine County Oklahoma (1)
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Mayes County Oklahoma (1)
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geologic age
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Paleozoic
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Carboniferous
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Mississippian
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Upper Mississippian (1)
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Primary terms
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Paleozoic
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Carboniferous
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Mississippian
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Upper Mississippian (1)
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remote sensing (1)
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sedimentary rocks
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carbonate rocks (1)
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United States
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Oklahoma
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Blaine County Oklahoma (1)
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Mayes County Oklahoma (1)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks (1)
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siliciclastics (1)
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sediments
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siliciclastics (1)
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ABSTRACT Production-scale variability in Mississippian reservoirs of the U.S. midcontinent is poorly understood, largely due to distant spacing of subsurface wells and the lack of outcrops that provide a 3-D distribution of potential reservoir facies. This study utilizes exposures of Upper Mississippian (Meramecian to Chesterian in age) lithofacies in a quarry to develop a 1st-order 3-D facies model at a production or enhanced-production scale (<40 ac [<16.2 ha]). By utilizing photogrammetry to stitch and georeference high-resolution aerial photos, 3-D representations of outcropping walls and pavement were created at a submeter resolution and serve as valuable tools for the visualization of bed and facies relationships in 3-D space. Drone-based aerial and orthogonal photography was used to capture images and create 3-D models of inaccessible outcrop areas. These models were then imported as base surfaces to geostatistical reservoir modeling software (Petrel), in which they were integrated with petrographic and sequence-stratigraphic data to model facies and porosity relationships. Various algorithms and variogram lengths were tested and compared to high-resolution outcrop data to determine the most appropriate workflow for future subsurface modeling. The Petrel-based facies and porosity models illustrate the lateral and vertical variability that exists in outcrop while providing detailed approximations of subsurface reservoir heterogeneity.