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National Assessment of Oil and Gas Project - Permian Basin Province (044) Quarter-Mile Cells

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-04-08T00:00:00Z
Cell maps for each oil and gas assessment unit were created by the USGS to illustrate the degree of exploration, type of production, and distribution of production in an assessment unit or province. Each cell represents a quarter-mile square of the land surface, and the cells were then coded to indicate whether the wells included within the cell are predominantly oil-producing, gas-producing, are both oil- and gas-producing, or are dry or the type of production is unknown. The well information was initially retrieved from the IHS Energy Group, PI/Dwights PLUS Well Data on CD-ROM, which is a proprietary, commercial database containing information for most oil and gas wells in the U.S. Cells were developed as a graphic solution to overcome the problem of displaying proprietary PI/Dwights PLUS Well Data. No proprietary data are displayed or included in the cell maps. The data from PI/Dwights PLUS Well Data were current as of 2004 when the cell maps were created in 2007.

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044 = Permian Basin 504401 = Permian Basin Paleozoic Composite 50440101 = Ellenburger Group Karst and Dolomite 50440102 = Simpson Group Sandstones 50440103 = Pre-Pennsylvanian Ramp and Platform Carbonates 50440104 = Devonian Thirtyone Formation Chert and Carbonate 50440105 = Lower Pennsylvanian (Morrow/Atoka) Shelf Sandstone and Carbonate 50440106 = Pennsylvanian-Lower Permian (Wolfcamp) Northwest Shelf Carbonate 50440107 = Pennsylvanian-Lower Permian (Wolfcamp) Central Basin Platform and Shelf Carbonate 50440108 = Pennsylvanian-Lower Permian (Wolfcamp) Horseshoe Platform/Eastern Shelf Carbonate and Sandstone 50440109 = Pennsylvanian-Lower Permian (Wolfcamp) Val Verde Slope and Basinal Sandstone and Carbonate 50440110 = Pennsylvanian-Lower Permian (Wolfcamp) Slope and Basinal Carbonate 50440111 = Abo Fluvial Sandstones 50440112 = Abo Shelf/Shelf Edge Carbonates 50440113 = Leonardian NW and E Shelf Restricted Platform Carbonates 50440114 = Leonardian Central Basin Platform Restricted Carbonates 50440115 = Leonardian Midland Basin Carbonate Sediment Gravity Flow Reservoirs 50440116 = Bone Spring Slope and Basin Reservoirs 50440117 = Spraberry Conventional Sandstones 50440118 = San Andres NW Shelf Platform Carbonates 50440119 = San Andres Eastern Shelf Platform Carbonates 50440120 = San Andres Central Basin Platform Carbonates 50440121 = San Andres-Grayburg Lowstand Carbonates 50440122 = San Andres-Grayburg Artesia-Vacuum Trend Carbonates 50440123 = Grayburg Central Basin Platform/Ozona Arch Carbonates 50440124 = Delaware Mountain Group Reservoirs 50440125 = Queen Sandstones 50440126 = Upper Artesia Sandstones/Carbonates 50440127 = Permian Reef Carbonates 50440128 = Ochoan Evaporites 50440161 = Delaware/Pecos Basins Woodford Continuous Shale Gas 50440162 = Delaware/Pecos Basins Barnett Continuous Shale Gas 50440163 = Midland Basin Woodford/Barnett Continuous Gas 50440164 = Delaware Basin Wolfcamp Shale 50440165 = Spraberry Continuous Oil Assessment Unit Cells Earth Science Economic geology Energy Resources Geology National Assessment of Oil and Gas Natural Gas Natural Resources Natural gas resources New Mexico Oil Oil sand resources Oil shale resources Permian Basin Province Pollastro, R.M. Resource Assessment Schenk, C.S. Texas U.S. Geological Survey US35 = New Mexico US48 = Texas USGS USGS World Energy Region 5 USGS:66145dfed34e63346653042e United States geoscientificInformation

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