3,579 wells across 531 active operators, with 204 drilling permits filed in the last 24 months.
Refreshed monthly from WOGCC well-header records. Data current as of 2026-08-17.
Quick answer: The Green River Basin formation in Wyoming has 3,579 wells on record across 531 active operators, with 204 drilling permits filed in the last 24 months (as of 2026-08-17). Its most active operators by well count are Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Wexpro Company and Chevron. Compiled from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records, refreshed monthly.
The operators with the most well counts targeting the Green River Basin formation in Wyoming:
| # | Operator | Wells in Green River Basin |
|---|---|---|
| 1 | Urban Oil & Gas Group | 301 |
| 2 | Amplify Energy Operating | 274 |
| 3 | Eog Resources | 204 |
| 4 | Wexpro Company | 159 |
| 5 | Chevron | 154 |
| 6 | Purewest Resources INC | 147 |
| 7 | Hilcorp Energy Company | 126 |
| 8 | Crowheart Energy | 95 |
| 9 | Marathon Oil Company | 90 |
| 10 | Atlantic Richfield Company | 89 |
The Wyoming counties with the most Green River Basin activity:
Sweetwater, Sublette, Carbon, Albany, Lincoln
The most recent 2 drilling permits filed for Green River Basin wells in Wyoming:
| Permit Date | Well | API | County | Operator | Lateral (ft) |
|---|---|---|---|---|---|
| 2026-02-10 | Bull Draw 11-8-28-107 1h | 49035313410000 |
Sublette | Wesco Operating | — |
| 2025-07-15 | Table Rock Unit 173h | 49037330690000 |
Sweetwater | Hilcorp Energy Company | — |
Wells targeting the Green River Basin that have been spudded but are waiting on completion — near-term production upside:
| Spud Date | Days Waiting | Well | Operator | County | Lateral (ft) |
|---|---|---|---|---|---|
| 2026-08-07 | 9 | Boulder 7c1-17d | Purewest Resources INC | Sublette | — |
| 2026-07-01 | 46 | East Echo Springs 9-21-1lh | Crowheart Energy | Carbon | — |
| 2026-07-01 | 46 | East Echo Springs 9-21-2lh | Crowheart Energy | Carbon | — |
| 2026-06-26 | 51 | Mesa 15c1-19d | Purewest Resources INC | Sublette | — |
| 2026-05-29 | 79 | Stewart Point 5b1-29d | Purewest Resources INC | Sublette | — |
| 2026-05-15 | 93 | Mesa 13c1-18d | Purewest Resources INC | Sublette | — |
The Green River Basin is one of Wyoming's active oil and gas plays, with 3,579 wells on file across 531 distinct operators of record. Operators have filed 204 drilling permits targeting the 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, Carbon, Albany, Lincoln, knowing whether your tract sits within an active 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.
See all Wyoming oil & gas formations & plays · Download the Wyoming formations dataset (CSV)
3,579 wells target the Green River Basin in Wyoming, worked by 531 active operators, per WOGCC well-header records (as of 2026-08-17).
By well count, the most active Green River Basin operators in Wyoming are Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Wexpro Company and Chevron. The full ranking is in the table on this page.
Operators filed 204 drilling permits targeting the Green River Basin in the last 24 months, and there are 6 drilled-but-uncompleted (DUC) wells awaiting completion — a live measure of current activity, per WOGCC records.
Operators filed 204 new drilling permits targeting the Green River Basin in Wyoming over the last 24 months, with 6 drilled-but-uncompleted (DUC) wells awaiting completion. New permits and spuds are the clearest signal of active Green River Basin drilling, per WOGCC records (as of 2026-08-17).
Green River Basin activity in Wyoming currently spans 3,579 wells on record and 531 active operators, led by Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Wexpro Company and Chevron, with 204 drilling permits filed in the last 24 months — refreshed monthly from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records (as of 2026-08-17).
The most active Green River Basin counties in Wyoming are Sweetwater, Sublette, Carbon, Albany, Lincoln.
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 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: Green River Basin
State: Wyoming
Total wells: 3,579
Active operators: 531
Permits 24mo: 204
Last refresh: 2026-08-17
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