Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

National Assessment of Oil and Gas Project - Permian Basin Province (044) Assessment Units

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-04-08T00:00:00Z
The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown here as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates a set of known or postulated oil and (or) gas accumulations sharing similar geologic, geographic, and temporal properties within the Total Petroleum System, such as source rock, timing, migration pathways, trapping mechanism, and hydrocarbon type. The Assessment Unit boundary is defined geologically as the limits of the geologic elements that define the Assessment Unit, such as limits of reservoir rock, geologic structures, source rock, and seal lithologies. The only exceptions to this are Assessment Units that border the Federal-State water boundary. In these cases, the Federal-State water boundary forms part of the Assessment Unit boundary.

Find Related Datasets

Click any tag below to search for similar datasets

44 = 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 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:661460d2d34e633466530441 United States geoscientificInformation

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov