7 recent activity records on file for Jm Calk Operating, LLC across TX — permits filed in the last 24 months, wells spudded in the last 90 days, wells turning to first production in the last 6 months, and drilled-uncompleted (DUC) inventory.
Refreshed monthly from TX RRC + OK OCC well-header records. Data current as of 2026-05-03.
Where Jm Calk Operating, LLC is most active across all 4 activity datasets:
Bexar, TX — 7 activity records
Which formations / plays Jm Calk Operating, LLC is targeting:
Ouachita Folded Belt — 6 activity records
Austin Chalk — 1 activity record
The most recent 7 drilling permits filed by Jm Calk Operating, LLC:
| Permit Date | Well | API | County | State | Formation | Lateral (ft) |
|---|---|---|---|---|---|---|
| 2026-02-19 | Erd Unit 15 | 4202938405 |
Bexar | TX | Ouachita Folded Belt | 127 |
| 2026-02-19 | Erd Unit 14 | 4202938404 |
Bexar | TX | Ouachita Folded Belt | 127 |
| 2026-02-18 | Erd Unit 13 | 4202938403 |
Bexar | TX | Ouachita Folded Belt | 127 |
| 2026-02-13 | Erd Unit 12 | 4202938402 |
Bexar | TX | Ouachita Folded Belt | 127 |
| 2025-12-15 | Erd Unit 8 | 4202938401 |
Bexar | TX | Ouachita Folded Belt | 127 |
| 2025-12-15 | Erd Unit 7 | 4202938400 |
Bexar | TX | Ouachita Folded Belt | 125 |
| 2025-12-15 | Erd Unit 6 | 4202938335 |
Bexar | TX | Austin Chalk | 127 |
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Get Your Free Mineral ValuationOperator: Jm Calk Operating, LLC
States active: TX
Total activity: 7
Permits 24mo: 7
Spuds 90d: 0
New producers: 0
DUC inventory: 0
Last refresh: 2026-05-03
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