2,277 wells across 360 active operators, with 51 drilling permits filed in the last 24 months.
Refreshed monthly from WOGCC well-header records. Data current as of 2026-08-23.
Quick answer: The Greater Green River Basin formation in Wyoming has 2,277 wells on record across 360 active operators, with 51 drilling permits filed in the last 24 months (as of 2026-08-23). 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 | 176 |
| 3 | Hilcorp Energy Company | 162 |
| 4 | Chevron | 116 |
| 5 | Bcemach | 103 |
| 6 | Amplify Energy Operating | 95 |
| 7 | Atlantic Richfield Company | 90 |
| 8 | Wexpro Company | 82 |
| 9 | Bpx Operating Company | 53 |
| 10 | Richardson Operating Company | 42 |
The Wyoming counties with the most Greater Green River Basin activity:
Sweetwater, Sublette, Lincoln, Carbon, Fremont
Wells targeting the Greater 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) |
|---|---|---|---|---|---|
| 2026-05-29 | 85 | Stewart Point 5b1-29d | Purewest Resources INC | Sublette | — |
The Greater Green River Basin is one of Wyoming's active oil and gas plays, with 2,277 wells on file across 360 distinct operators of record. Operators have filed 51 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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2,277 wells target the Greater Green River Basin in Wyoming, worked by 360 active operators, per WOGCC well-header records (as of 2026-08-23).
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 51 drilling permits targeting the Greater Green River Basin in the last 24 months, and there is 1 drilled-but-uncompleted (DUC) well awaiting completion — a live measure of current activity, per WOGCC records.
Operators filed 51 new drilling permits targeting the Greater Green River Basin in Wyoming over the last 24 months, with 1 drilled-but-uncompleted (DUC) well awaiting completion. New permits and spuds are the clearest signal of active Greater Green River Basin drilling, per WOGCC records (as of 2026-08-23).
Greater Green River Basin activity in Wyoming currently spans 2,277 wells on record and 360 active operators, led by Urban Oil & Gas Group, EOG Resources, Hilcorp Energy Company, Chevron and Bcemach, with 51 drilling permits filed in the last 24 months — refreshed monthly from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records (as of 2026-08-23).
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: 2,277
Active operators: 360
Permits 24mo: 51
Last refresh: 2026-08-23
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