# JM Calk Operating, LLC Drilling Permits in Texas and Oklahoma

**TL;DR:** JM Calk Operating, LLC has filed 7 oil and gas drilling permits in Texas and Oklahoma over the last 24 months, with the most recent permit dated February 19, 2026. All drilling activity is concentrated in Bexar County, Texas, primarily targeting the Ouachita Folded Belt formation with one Austin Chalk permit. Data is sourced from state regulator filings and refreshed monthly.

## Key Takeaways

- JM Calk Operating has filed 7 drilling permits across Texas and Oklahoma in the past 24 months, all in Bexar County, Texas
- The most recent permit was filed on February 19, 2026, indicating active drilling plans
- The Ouachita Folded Belt formation accounts for 6 of 7 permits (86%), with one Austin Chalk permit
- All permits show extremely short lateral lengths of 125-127 feet, which is atypical for modern horizontal drilling
- Five of the seven permits were filed in a concentrated period between December 2025 and February 2026
- Permitted wells have not yet started producing as of the June 2026 data refresh
- Permit data is sourced directly from Texas Railroad Commission filings and updated monthly
- Mineral owners near these permitted locations may have opportunities for royalty income or mineral rights sales

## Page Highlights

**Recent Drilling Activity Table**: Lists all 7 drilling permits filed by JM Calk Operating over the last 24 months, including permit dates, well names (all "ERD UNIT" wells numbered 6-15), API numbers, county (Bexar), state (Texas), formations, and lateral lengths.

**Geographic Concentration**: All drilling activity is focused exclusively in Bexar County, Texas, with no permits filed in Oklahoma despite the page scope covering both states.

**Formation Targets**: The operator is primarily targeting the Ouachita Folded Belt formation (6 permits) with one Austin Chalk permit, indicating a focused geological strategy.

**Permit Timeline**: The most recent cluster of permits occurred between December 2025 and February 2026, with four permits filed in February 2026 alone.

**Data Currency**: Information is current as of June 1, 2026, with monthly refresh cycles to capture new regulatory filings from the Texas Railroad Commission and Oklahoma Corporation Commission.

## Related Topics

- [JM Calk Operating, LLC Profile](https://www.buckheadenergy.com/operators/jm-calk-operating-llc)
- [Full Operator Directory](https://www.buckheadenergy.com/operators)
- [Sell Your Mineral Rights](https://www.buckheadenergy.com/sell)
- [Mineral Rights Glossary](https://www.buckheadenergy.com/glossary)

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