TL;DR: Jm Calk Operating, LLC has 7 oil and gas drilling permits on file; the most recent was filed 2026-02-19. This page lists permit dates, API numbers, counties, target formations, and lateral lengths. Data current as of 2026-05-04.
7 total permits on file, most recent 2026-02-19.
Permits Filed
Permit / Spud Date
API Number
County
Well Name
Formation
Lateral Length (ft)
2026-02-19
4202938405
BEXAR
ERD UNIT 15
Ouachita Folded Belt
127
2026-02-19
4202938404
BEXAR
ERD UNIT 14
Ouachita Folded Belt
127
2026-02-18
4202938403
BEXAR
ERD UNIT 13
Ouachita Folded Belt
127
2026-02-13
4202938402
BEXAR
ERD UNIT 12
Ouachita Folded Belt
127
2025-12-15
4202938401
BEXAR
ERD UNIT 8
Ouachita Folded Belt
127
2025-12-15
4202938400
BEXAR
ERD UNIT 7
Ouachita Folded Belt
125
2025-12-15
4202938335
BEXAR
ERD UNIT 6
Austin Chalk
127
Key Takeaways
Operator: Jm Calk Operating, LLC.
Permit volume: 7 permits on file (most recent: 2026-02-19).
What's listed: Permit and spud date, API number, county, well name, target formation, and lateral length per record.
Mineral owners:Valor's mineral management tracks operator permit activity by tract for owners with interests under Jm Calk Operating, LLC's acreage.