4,009 wells across 582 recorded operators, with 215 drilling permits filed in the 24-month window at summary refresh.
Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
Quick answer: The Green River Basin formation in Wyoming has 4,009 wells on record across 582 recorded operators, with 215 drilling permits filed in the 24-month window at source refresh. Its operators with the most wells on record are Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Crowheart Energy and Chevron. Source: Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
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 | 302 |
| 2 | Amplify Energy Operating | 283 |
| 3 | Eog Resources | 203 |
| 4 | Crowheart Energy | 159 |
| 5 | Chevron | 158 |
| 6 | Wexpro Company | 144 |
| 7 | Purewest Resources INC | 135 |
| 8 | Marathon Oil Company | 127 |
| 9 | Hilcorp Energy Company | 125 |
| 10 | Red Desert Resources, LLC | 109 |
The Wyoming counties with the most Green River Basin activity:
Carbon, Sweetwater, Sublette, Albany, Lincoln
Drilling permits in Wyoming each year, the Green River Basin count and share of them, and the median lateral length of those Green River Basin permits.
| Year | State permits | This formation | Share | Median lateral |
|---|---|---|---|---|
| 2026 | 616 | 101 | 16.4% | n<5 |
| 2025 | 566 | 112 | 19.8% | 2,070 ft |
| 2024 | 459 | 42 | 9.2% | 1,710 ft |
| 2023 | 581 | 77 | 13.3% | 1,615 ft |
| 2022 | 696 | 30 | 4.3% | 2,606 ft |
| 2021 | 505 | <3 | — | n<5 |
| 2020 | 456 | <3 | — | n<5 |
| 2019 | 1,197 | <3 | — | n<5 |
Share of each year’s Wyoming drilling permits by target formation, for the formations with the most permits.
| Year | Niobrara- Mowry | Powder River Basin | Mesaverde-Lance | Muddy J Sand | Green River Basin | Mesaverde-Lance-Lewis |
|---|---|---|---|---|---|---|
| 2026 | 2.8% | 70% | — | — | 16.4% | — |
| 2025 | 6.5% | 59.4% | 0.9% | — | 19.8% | — |
| 2024 | 17.2% | 52.5% | 1.1% | — | 9.2% | 1.7% |
| 2023 | 15% | 42.3% | 1% | 7.6% | 13.3% | 0.7% |
| 2022 | 33.9% | 26.4% | 6.8% | 10.8% | 4.3% | 2.3% |
| 2021 | 59.4% | 4.6% | 17.8% | 13.9% | — | 2.6% |
| 2020 | 69.7% | 5% | 2.6% | 15.1% | — | 3.1% |
| 2019 | 56% | 6.5% | 17.3% | 9.4% | — | 6.7% |
Buckhead Energy computes every figure on this page from grouped records in public oil and gas data. The page shows counts, sums, percentiles and indexes only; it does not list individual wells, leases or permits.
Counts under 3 wells and percentiles under 5 wells are withheld; totals are floors.
Share is the formation’s permits as a percent of the state’s permits that year. Median lateral length is published only when at least 5 permits stand behind it.
Last computed: 2026-11-01. These figures are informational only and are not a valuation of any mineral or royalty interest.
The Green River Basin is a formation/play group recorded in Wyoming, with 4,009 wells on file across 582 distinct operators of record. Operators have filed 215 drilling permits targeting the Green River Basin in the 24-month window at summary refresh. These are stored records, not a live measure of drilling.
Recorded formation activity provides regional context. It does not establish ownership, future production, royalty payments or a value for an individual tract. Consult qualified professionals about your specific interest.
4,009 wells target the Green River Basin in Wyoming, worked by 582 recorded operators, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The Green River Basin operators with the most wells on record in Wyoming are Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Crowheart Energy and Chevron. The full ranking is in the table on this page. Formation summary date: 2026-11-01.
Operators filed 215 drilling permits targeting the Green River Basin in the 24-month window at source refresh, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
Operators filed 215 new drilling permits targeting the Green River Basin in Wyoming in the 24-month window at source refresh. New permits and spuds record reported activity stages; they do not establish ongoing drilling, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
Green River Basin activity in Wyoming includes 4,009 wells on record and 582 recorded operators, with 215 drilling permits filed in the 24-month window at source refresh — from Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The primary counties recorded for Green River Basin in Wyoming are Carbon, Sweetwater, Sublette, Albany, Lincoln. Formation summary date: 2026-11-01.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. This page is informational only, not a valuation. Formation summary date: 2026-11-01.
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Get Your Free Written OfferFormation: Green River Basin
State: Wyoming
Total wells: 4,009
Recorded operators: 582
Permits 24mo: 215
Summary date: 2026-11-01
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