1995 National Oil and Gas Assessment Quarter-Mile Cells for Eastern Great Basin

Quarter-mile cell maps illustrate exploration maturity and production types for oil and gas plays within the Eastern Great Basin province. The U.S. Geological Survey created these maps in 1994 using proprietary well data current as of December 1990. Each cell is coded to represent whether contained wells are predominantly oil-producing, gas-producing, both, or dry.

Use Cases

• Classify cell production type (oil, gas, both, dry) across different geological plays like 'Late Paleozoic' or 'Sevier Frontal Zone'.
• Analyze spatial distribution of exploration maturity using quarter-mile cell grids for the Eastern Great Basin province.
• Compare conventional play characteristics (e.g., play 1901 'Unconformity A' vs. play 1905 'Younger Tertiary Basins') based on cell-coded production data.
• Map historical oil and gas activity from 1990 using non-proprietary cell representations derived from the Well History Control System database.

Strengths

• Data covers 6 distinct conventional oil and gas plays within a defined geological province.
• Spatial resolution is standardized at quarter-mile square cells for consistent analysis.

Limitations

• Underlying well data is from December 1990, making the resource assessment over 30 years old.
• The dataset excludes proprietary well details, offering only aggregated cell-level classifications.
• Coverage is limited to a single province (Eastern Great Basin), not the entire national assessment.

Provenance

Source

U.S. Geological Survey (USGS), derived from the proprietary Petroleum Information Well History Control System.

Collection Method

Graphic cell maps created in 1994 to display aggregated well data without revealing proprietary information.

Time Range

Assessment based on well data current as of 1990.

Freshness

Data reflects conditions as of 1990-12-01.

Geography

Eastern Great Basin Province (Province 19) within the United States.