66 wells across 38 recorded operators, with 0 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 Shirley Basin formation in Wyoming has 66 wells on record across 38 recorded operators, with 0 drilling permits filed in the 24-month window at source refresh. Its operators with the most wells on record are Wolf Energy Company, Six Ten Operating Company, New York Oil Company, Markley & Woodin and K & W Oil Company. 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 Shirley Basin formation in Wyoming:
| # | Operator | Wells in Shirley Basin |
|---|---|---|
| 1 | Wolf Energy Company | 8 |
| 2 | Six Ten Operating Company | 8 |
| 3 | New York Oil Company | 4 |
| 4 | Markley & Woodin | 3 |
| 5 | K & W Oil Company | 3 |
| 6 | Stanolind Oil & Gas Company | — |
| 7 | Bales Conrad E | — |
| 8 | Carrl Oil & Gas | — |
| 9 | Dyer J G | — |
| 10 | Sorrels Warren D | — |
The Wyoming counties with the most Shirley Basin activity:
Natrona, Carbon, Albany
The Shirley Basin 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 Shirley Basin is a formation/play group recorded in Wyoming, with 66 wells on file across 38 distinct operators of record. Operators have filed 0 drilling permits targeting the Shirley 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.
66 wells target the Shirley Basin in Wyoming, worked by 38 recorded operators, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The Shirley Basin operators with the most wells on record in Wyoming are Wolf Energy Company, Six Ten Operating Company, New York Oil Company, Markley & Woodin and K & W Oil Company. The full ranking is in the table on this page. Formation summary date: 2026-11-01.
Operators filed 0 drilling permits targeting the Shirley 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 0 new drilling permits targeting the Shirley 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.
Shirley Basin activity in Wyoming includes 66 wells on record and 38 recorded operators, with 0 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 Shirley Basin in Wyoming are Natrona, Carbon, Albany. 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 Shirley Basin activity in your area.
Get Your Free Written OfferFormation: Shirley Basin
State: Wyoming
Total wells: 66
Recorded operators: 38
Permits 24mo: 0
Summary date: 2026-11-01
