2,381 wells across 390 active operators, with 40 drilling permits filed in the last 24 months.
Refreshed monthly from WOGCC well-header records. Data current as of 2026-08-12.
Quick answer: The Greater Green River Basin formation in Wyoming has 2,381 wells on record across 390 active operators, with 40 drilling permits filed in the last 24 months (as of 2026-08-12). Its most active operators by well count are Urban Oil & Gas Group, EOG Resources, Hilcorp Energy Company, Chevron and Bcemach. Compiled from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records, refreshed monthly.
The operators with the most well counts targeting the Greater Green River Basin formation in Wyoming:
| # | Operator | Wells in Greater Green River Basin |
|---|---|---|
| 1 | Urban Oil & Gas Group | 212 |
| 2 | Eog Resources | 174 |
| 3 | Hilcorp Energy Company | 162 |
| 4 | Chevron | 118 |
| 5 | Bcemach | 103 |
| 6 | Atlantic Richfield Company | 100 |
| 7 | Amplify Energy Operating | 88 |
| 8 | Wexpro Company | 67 |
| 9 | Richardson Operating Company | 65 |
| 10 | Bpx Operating Company | 55 |
The Wyoming counties with the most Greater Green River Basin activity:
Sweetwater, Sublette, Lincoln, Carbon, Fremont
The Greater Green River Basin is one of Wyoming's active oil and gas plays, with 2,381 wells on file across 390 distinct operators of record. Operators have filed 40 drilling permits targeting the Greater Green River Basin in the last 24 months — a measure of how active the play is right now versus its historical baseline.
For mineral owners with interests in Sweetwater, Sublette, Lincoln, Carbon, Fremont, knowing whether your tract sits within an active Greater Green River Basin footprint is a foundational valuation question. Active formations with consistent permit flow command premium pricing; legacy formations with steady but declining production are valued differently.
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2,381 wells target the Greater Green River Basin in Wyoming, worked by 390 active operators, per WOGCC well-header records (as of 2026-08-12).
By well count, the most active Greater Green River Basin operators in Wyoming are Urban Oil & Gas Group, EOG Resources, Hilcorp Energy Company, Chevron and Bcemach. The full ranking is in the table on this page.
Operators filed 40 drilling permits targeting the Greater Green River Basin in the last 24 months — a live measure of current activity, per WOGCC records.
Operators filed 40 new drilling permits targeting the Greater Green River Basin in Wyoming over the last 24 months. New permits and spuds are the clearest signal of active Greater Green River Basin drilling, per WOGCC records (as of 2026-08-12).
Greater Green River Basin activity in Wyoming currently spans 2,381 wells on record and 390 active operators, led by Urban Oil & Gas Group, EOG Resources, Hilcorp Energy Company, Chevron and Bcemach, with 40 drilling permits filed in the last 24 months — refreshed monthly from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records (as of 2026-08-12).
The most active Greater Green River Basin counties in Wyoming are Sweetwater, Sublette, Lincoln, Carbon, Fremont.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. Buckhead Energy checks your tract against current Greater Green River Basin well and permit data and puts a free, no-obligation written offer in writing — this page is informational only, not a valuation.
Cite this dataset
Permanently archived and citable via a DOI on Zenodo (CERN), under a CC BY 4.0 license. DOI: 10.5281/zenodo.21442884 · View on Zenodo
License & attribution: This data is licensed CC BY 4.0. You are free to share and adapt it, including commercially, provided you credit “Buckhead Energy” and link back to this page or the DOI above.
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Formation: Greater Green River Basin
State: Wyoming
Total wells: 2,381
Active operators: 390
Permits 24mo: 40
Last refresh: 2026-08-12
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