COUNTIES · EAGLE FORD SHALE · DISTRICT 01 · CODE 029
Bexar County, Texas
Bexar County has had no new drilling permits in the past 90 days; the most recent permit on record was issued June 5, 2026.
JM Calk Operating, LLC leads with 7 permits in the past 12 months, one of 2 operators active in the county.
One operator filed a first Bexar County permit in the past year.
Median permitted depth over the past year is 1,500 ft (prior year: 410 ft); 0% of the past year's permits are horizontal.
The county has 9 active disposal and injection permits, with 9.54K barrels injected in the 12 months reported through June 2025.
TexNet located 1 earthquakes of magnitude 2 or more in the county's permit footprint over the past two years, the largest M2.1.
7,897 drilling permits have been issued in Bexar County since 1977.
7,897 permits on file since 1977 · last issued Jun 5, 2026
Watch Bexar CountyAlso: every Bexar County well in the statewide list, searchable → · a year of permits on the map →
- 8
- permits issued, 365d
- +700%
- vs prior 365d (1)
- 2
- operators filing
- 0%
- horizontal
- 1,363
- avg permitted depth, ft
- 437
- operators, all time
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 5, 2026 · WHY ISSUE AND SEEN DATES DIFFER
Permits issued by month
LAST 120 MONTHS · BY ISSUE DATE
Last 12 months 8 · prior 12 1(+700%)
Top operators, last 12 months
By permits issued. Wells are the operator’s current inventory here from the RRC wellbore file.
| Operator | Permits | Wells |
|---|---|---|
| JM Calk Operating, LLC | 7 | 24 |
| Enterprise Products Operatingllc | 1 | 0 |
New entrants, last 12 months
Operators whose first permit in Bexar County came in the last year. 1 in total.
- JM Calk Operating, LLC7 permitsDec 15, 2025 · new to Texas permits
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in Bexar County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 9
- active UIC permits of 351
- 4.03K
- permitted bbl/day, active
- 9.54K
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in Bexar County →
Permitted volume is a ceiling, not throughput. How to read it →
TexNet catalog via USGS
Seismicity, last 2 years
- 1
- M2+ events in the area
- M2.1
- largest
Monthly counts, magnitudes, and every recent event in the area →
Events are not tagged with a county; this counts M2+ events inside the bounding box of the county’s located permits, padded 0.1°. About TexNet →
Latest permits
NEWEST FIRST BY ISSUE DATE
| Permit | Seen | Issued | Operator | Lease / well | Depth | API |
|---|---|---|---|---|---|---|
| 915977 | Jun 5, 2026 | Jun 5, 2026 | Enterprise Products Operatingllc | CPS LID24-SA-110 #1 | 400 | 02938406 |
| 913507 | Feb 19, 2026 | Feb 19, 2026 | JM Calk Operating, LLC | Erd Unit #15 | 1,500 | 02938405 |
| 913506 | Feb 19, 2026 | Feb 19, 2026 | JM Calk Operating, LLC | Erd Unit #14 | 1,500 | 02938404 |
| 913484 | Feb 18, 2026 | Feb 18, 2026 | JM Calk Operating, LLC | Erd Unit #13 | 1,500 | 02938403 |
| 913198 | Feb 13, 2026 | Feb 13, 2026 | JM Calk Operating, LLC | Erd Unit #12 | 1,500 | 02938402 |
| 912107 | Dec 15, 2025 | Dec 15, 2025 | JM Calk Operating, LLC | Erd Unit #8 | 1,500 | 02938401 |
| 912106 | Dec 15, 2025 | Dec 15, 2025 | JM Calk Operating, LLC | Erd Unit #7 | 1,500 | 02938400 |
| 912105 | Dec 15, 2025 | Dec 15, 2025 | JM Calk Operating, LLC | Erd Unit #6 | 1,500 | 02938335 |
| 907616 | Apr 25, 2025 | Apr 25, 2025 | Alamo Environmental, Inc. | Cassin #D 19 | 410 | 02936584 |
| 890265 | Jun 6, 2023 | Jun 6, 2023 | Nustar Logistics, L.P. | NUSTAR1 #C 01 | 440 | 02938399 |
Questions about Bexar County
How many drilling permits were issued in Bexar County in the last 12 months?
8 permits were issued in Bexar County in the last 12 months, up 700% from 1 in the 12 months before. 0% were for horizontal wells. The most recent was issued Jun 5, 2026. 7,897 are on file since 1977.
Every Bexar County permit →Who is the most active operator in Bexar County?
By drilling permits filed in the last 12 months, JM Calk Operating, LLC is the most active operator in Bexar County, with 7 of 8, followed by Enterprise Products Operatingllc (1). 0 operators filed permits here in the last 90 days.
Operators in Bexar County →How many oil and gas wells are in Bexar County?
9,467 wells are on file in Bexar County: 1,926 active, 4,781 plugged, and 8 permitted and not yet drilled. 10 are horizontal, and 43 operators hold them.
Every well in Bexar County →How much oil and gas does Bexar County produce?
The Railroad Commission files oil and gas production by lease, not by well or by county. Each lease with wells in Bexar County is listed with its reported production on the county's Leases tab.
Leases in Bexar County →How much water is injected in Bexar County?
9,537 barrels of water were injected in Bexar County in the 12 months through June 2025, reported on form H-10. 9 of the county's 351 disposal and injection permits are active.
Disposal and injection in Bexar County →What formations are drilled in Bexar County?
Completion filings for wells in Bexar County report tops for 8 formations in at least ten wells each. The most reported are the Olmos (1,301 wells, median top 1,288 ft), the Escondido (926 wells, median top 530 ft), and the Anacacho (573 wells, median top 1,200 ft).
Formations in Bexar County →What basin is Bexar County in?
Petrora lists Bexar County in the Eagle Ford Shale. It is in the Railroad Commission's District 01.
The Eagle Ford Shale →Have there been earthquakes in Bexar County?
TexNet located 1 earthquake of magnitude 2 or more in the area of Bexar County's permitted wells in the last 2 years; the largest was M2.1.
Earthquakes in Bexar County →About this data
Drilling permits from the RRC OGA049M master and daily daf420 files, rebuilt nightly into per-county figures; windows are on the date issued. Disposal from UIC permits and H-10 reports at the last settled month; earthquakes from the TexNet catalog inside the county's located-permit footprint.
Developers: this page as JSON is GET /v1/data/counties/tx/bexar?days=365, documented in the API reference.