10,091 wells across 233 recorded operators, with 4 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 Muddy J Sand formation in Wyoming has 10,091 wells on record across 233 recorded operators, with 4 drilling permits filed in the 24-month window at source refresh. Its operators with the most wells on record are Anadarko Petroleum, EOG Resources, Wave Petroleum Operating, North Silo Resources LLC and Samson Resources 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 Muddy J Sand formation in Wyoming:
| # | Operator | Wells in Muddy J Sand |
|---|---|---|
| 1 | Anadarko Petroleum | 2,691 |
| 2 | Eog Resources | 1,553 |
| 3 | Wave Petroleum Operating | 979 |
| 4 | North Silo Resources LLC | 907 |
| 5 | Samson Resources Company | 536 |
| 6 | Longs Peak Resources | 512 |
| 7 | Gungnir Operating LLC | 381 |
| 8 | Fh Petroleum | 303 |
| 9 | Kaiserfrancis Oil Company | 189 |
| 10 | Rockies Holdings LLC | 146 |
The Wyoming counties with the most Muddy J Sand activity:
Laramie, Goshen, Platte
Drilling permits in Wyoming each year, the Muddy J Sand count and share of them, and the median lateral length of those Muddy J Sand permits.
| Year | State permits | This formation | Share | Median lateral |
|---|---|---|---|---|
| 2026 | 616 | <3 | — | n<5 |
| 2025 | 566 | <3 | — | n<5 |
| 2024 | 459 | <3 | — | n<5 |
| 2023 | 581 | 44 | 7.6% | 9,890 ft |
| 2022 | 696 | 75 | 10.8% | 7,479 ft |
| 2021 | 505 | 70 | 13.9% | 10,115 ft |
| 2020 | 456 | 69 | 15.1% | 10,061 ft |
| 2019 | 1,197 | 113 | 9.4% | 9,806 ft |
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 Muddy J Sand is a formation/play group recorded in Wyoming, with 10,091 wells on file across 233 distinct operators of record. Operators have filed 4 drilling permits targeting the Muddy J Sand 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.
10,091 wells target the Muddy J Sand in Wyoming, worked by 233 recorded operators, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The Muddy J Sand operators with the most wells on record in Wyoming are Anadarko Petroleum, EOG Resources, Wave Petroleum Operating, North Silo Resources LLC and Samson Resources Company. The full ranking is in the table on this page. Formation summary date: 2026-11-01.
Operators filed 4 drilling permits targeting the Muddy J Sand 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 4 new drilling permits targeting the Muddy J Sand 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.
Muddy J Sand activity in Wyoming includes 10,091 wells on record and 233 recorded operators, with 4 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 Muddy J Sand in Wyoming are Laramie, Goshen, Platte. 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: Muddy J Sand
State: Wyoming
Total wells: 10,091
Recorded operators: 233
Permits 24mo: 4
Summary date: 2026-11-01
