10,091 wells across 233 active operators, with 2 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 Muddy J Sand formation in Wyoming has 10,091 wells on record across 233 active operators, with 2 drilling permits filed in the last 24 months (as of 2026-08-23). Its most active operators by well count are Anadarko Petroleum, EOG Resources, Wave Petroleum Operating, North Silo Resources LLC and Samson Resources Company. Compiled from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records, refreshed monthly.
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
The Muddy J Sand is one of Wyoming's active oil and gas plays, with 10,091 wells on file across 233 distinct operators of record. Operators have filed 2 drilling permits targeting the Muddy J Sand 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 Laramie, Goshen, Platte, knowing whether your tract sits within an active Muddy J Sand 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.
See all Wyoming oil & gas formations & plays · Download the Wyoming formations dataset (CSV)
10,091 wells target the Muddy J Sand in Wyoming, worked by 233 active operators, per WOGCC well-header records (as of 2026-08-23).
By well count, the most active Muddy J Sand operators 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.
Operators filed 2 drilling permits targeting the Muddy J Sand in the last 24 months — a live measure of current activity, per WOGCC records.
Operators filed 2 new drilling permits targeting the Muddy J Sand in Wyoming over the last 24 months. New permits and spuds are the clearest signal of active Muddy J Sand drilling, per WOGCC records (as of 2026-08-23).
Muddy J Sand activity in Wyoming currently spans 10,091 wells on record and 233 active operators, led by Anadarko Petroleum, EOG Resources, Wave Petroleum Operating, North Silo Resources LLC and Samson Resources Company, with 2 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 Muddy J Sand counties in Wyoming are Laramie, Goshen, Platte.
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 Muddy J Sand 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: Muddy J Sand
State: Wyoming
Total wells: 10,091
Active operators: 233
Permits 24mo: 2
Last refresh: 2026-08-23