52,599 wells across 1,935 active operators, with 0 drilling permits filed in the last 24 months.
Refreshed monthly from KCC well-header records. Data current as of 2026-08-23.
Quick answer: The Excello-Mulky formation in Kansas has 52,599 wells on record across 1,935 active operators, with 0 drilling permits filed in the last 24 months (as of 2026-08-23). Its most active operators by well count are River Rock Operating, Redbud Oil & Gas11/Ofb, Colt Energy, Postrock Midcontinent Production and Kansas Energy Company. Compiled from Kansas Corporation Commission (KCC) well-header records, refreshed monthly.
The operators with the most well counts targeting the Excello-Mulky formation in Kansas:
| # | Operator | Wells in Excello-Mulky |
|---|---|---|
| 1 | River Rock Operating | 2,374 |
| 2 | Redbud Oil & Gas11/Ofb | 2,094 |
| 3 | Colt Energy | 1,879 |
| 4 | Postrock Midcontinent Production | 949 |
| 5 | Kansas Energy Company | 843 |
| 6 | A & A Well Service | 841 |
| 7 | Running Foxes Petroleum | 797 |
| 8 | Dart Cherokee Basin Operating | 763 |
| 9 | Cherokee Wells | 734 |
| 10 | Jv Oil | 652 |
The Kansas counties with the most Excello-Mulky activity:
Montgomery, Allen, Neosho, Wilson, Chautauqua
The Excello-Mulky is one of Kansas's active oil and gas plays, with 52,599 wells on file across 1,935 distinct operators of record. Operators have filed 0 drilling permits targeting the Excello-Mulky 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 Montgomery, Allen, Neosho, Wilson, Chautauqua, knowing whether your tract sits within an active Excello-Mulky 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 Kansas oil & gas formations & plays · Download the Kansas formations dataset (CSV)
52,599 wells target the Excello-Mulky in Kansas, worked by 1,935 active operators, per KCC well-header records (as of 2026-08-23).
By well count, the most active Excello-Mulky operators in Kansas are River Rock Operating, Redbud Oil & Gas11/Ofb, Colt Energy, Postrock Midcontinent Production and Kansas Energy Company. The full ranking is in the table on this page.
Operators filed 0 drilling permits targeting the Excello-Mulky in the last 24 months — a live measure of current activity, per KCC records.
Operators filed 0 new drilling permits targeting the Excello-Mulky in Kansas over the last 24 months. New permits and spuds are the clearest signal of active Excello-Mulky drilling, per KCC records (as of 2026-08-23).
Excello-Mulky activity in Kansas currently spans 52,599 wells on record and 1,935 active operators, led by River Rock Operating, Redbud Oil & Gas11/Ofb, Colt Energy, Postrock Midcontinent Production and Kansas Energy Company, with 0 drilling permits filed in the last 24 months — refreshed monthly from Kansas Corporation Commission (KCC) well-header records (as of 2026-08-23).
The most active Excello-Mulky counties in Kansas are Montgomery, Allen, Neosho, Wilson, Chautauqua.
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 Excello-Mulky 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.
Get a free written offer based on your specific tract, operator, and the current Excello-Mulky activity in your area.
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Formation: Excello-Mulky
State: Kansas
Total wells: 52,599
Active operators: 1,935
Permits 24mo: 0
Last refresh: 2026-08-23