131 wells across 85 recorded operators, with <3 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 Hanna formation in Wyoming has 131 wells on record across 85 recorded operators, with — drilling permits filed in the 24-month window at source refresh. Its operators with the most wells on record are Marathon Oil Company, Mingo Oil Producers, Production Service & Equipment, Ames Oil & Gas and True Oil. 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 Hanna formation in Wyoming:
| # | Operator | Wells in Hanna |
|---|---|---|
| 1 | Marathon Oil Company | 9 |
| 2 | Mingo Oil Producers | 8 |
| 3 | Production Service & Equipment | 7 |
| 4 | Ames Oil & Gas | 4 |
| 5 | True Oil | 3 |
| 6 | St Mary Operating Company | 3 |
| 7 | Bpx Operating Company | 3 |
| 8 | Davis Oil Company | 3 |
| 9 | Antler Energy | — |
| 10 | Dyer J G | — |
The Wyoming counties with the most Hanna activity:
Carbon
The Hanna is not among the Wyoming formations tracked separately in the yearly permit mix, so only statewide permit counts are shown.
| Year | State permits | This formation | Share | Median lateral |
|---|---|---|---|---|
| 2026 | 616 | — | — | — |
| 2025 | 566 | — | — | — |
| 2024 | 459 | — | — | — |
| 2023 | 581 | — | — | — |
| 2022 | 696 | — | — | — |
| 2021 | 505 | — | — | — |
| 2020 | 456 | — | — | — |
| 2019 | 1,197 | — | — | — |
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 Hanna is a formation/play group recorded in Wyoming, with 131 wells on file across 85 distinct operators of record. Operators have filed <3 drilling permits targeting the Hanna 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.
131 wells target the Hanna in Wyoming, worked by 85 recorded operators, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The Hanna operators with the most wells on record in Wyoming are Marathon Oil Company, Mingo Oil Producers, Production Service & Equipment, Ames Oil & Gas and True Oil. The full ranking is in the table on this page. Formation summary date: 2026-11-01.
Operators filed — drilling permits targeting the Hanna 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 — new drilling permits targeting the Hanna 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.
Hanna activity in Wyoming includes 131 wells on record and 85 recorded operators, with — 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 Hanna in Wyoming are Carbon. 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.
Get a free written offer based on your specific tract, operator, and the current Hanna activity in your area.
Get Your Free Written OfferFormation: Hanna
State: Wyoming
Total wells: 131
Recorded operators: 85
Permits 24mo: <3
Summary date: 2026-11-01
