Mineral rights in Mcmullen County, Texas
Mcmullen County is one of Texas's most drilled counties right now — 233 permits approved in the last 24 months and activity cooling.
- 233
- Permits · 24 mo
- 6
- Rigs running
- 11,474
- Wells on record
- 2,263
- Mineral owners
down 20% vs prior 24 months
as of 2026-05-23
appraisal-linked records
Who's drilling Mcmullen County
Operators ranked by drilling permits approved in the 24 months ending 2026-05-23.
| Operator | Permits · 24 mo |
|---|---|
| Bp | 93 |
| Caturus | 29 |
| Gulftex Energy | 27 |
| EOG | 23 |
| Ineos | 11 |
What the record says
Mcmullen County recorded 233 drilling permits in the 24 months ending 2026-05-23, against 293 in the prior 24 months. Development here is overwhelmingly horizontal (94% of recent permits, averaging 8,197-foot laterals) — modern pad development that drains whole sections at a time. Most activity targets the Eagle Ford play of the Western Gulf basin.
On the production side, Texas Railroad Commission county cycle data shows Mcmullen County produced roughly 23.3M barrels of oil and 200.7M Mcf of gas in 2025 — the royalty base that mineral values here are priced against.
Ownership is spread across 2,263 mineral owners holding 2,263 appraisal-linked interest records . Fragmented ownership like this is where buyers find deals — and where heirs discover interests they didn't know they had. See our guide to researching mineral ownership.
Leasing has kept pace: 698 leases were recorded in the county over the last 24 months, with recent recorded leases averaging about 25% royalty. For how royalty terms work, see our royalty guide.
Thinking about value? Start with what drives mineral prices or run the numbers in the value calculator.
Mcmullen County mineral rights FAQ
Who is drilling in Mcmullen County, Texas?
The most active operators by permits approved in the last 24 months are Bp, Caturus, Gulftex Energy. The full table above lists the top five with permit counts.
What royalty are leases paying in Mcmullen County?
Recorded leases over the past five years in Mcmullen County average about 25% royalty. Individual terms vary with acreage position, competition, and the operator — treat this as a market reference point, not a quote.
How many mineral owners are there in Mcmullen County?
County appraisal and ownership records show 2,263 distinct mineral owners holding 2,263 interest records in Mcmullen County as of the 2026-05-23 snapshot.
How do I research mineral rights ownership in Mcmullen County?
Start with the Mcmullen County clerk's deed records and the county appraisal roll, then verify against state regulator filings. Our title search guide walks through the process, and the Mineral Eagle platform links these records for the whole county.
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Buying in Mcmullen County?
Mineral Eagle links every permit above to the owners it affects — 2,263 of them, with the records to back it up.