COUNTIES · EAGLE FORD SHALE · DISTRICT 01 · CODE 163
Frio County, Texas
Frio County permitting is running 6.3 permits a month over the trailing 90 days (19 total, level with the prior quarter). 6 were issued in the past week.
Formentera Operations LLC leads with 35 permits in the past 12 months, one of 8 operators active in the county.
One operator filed a first Frio County permit in the past year.
Median permitted depth over the past year is 10,000 ft (prior year: 9,000 ft); 75% of the past year's permits are horizontal.
The county has 147 active disposal and injection permits, with 14.6M barrels injected in the 12 months reported through June 2025.
443 earthquakes of magnitude 2 or more were located in the county's permit footprint over the past two years, the largest M3.6.
3,653 drilling permits have been issued in Frio County since 1977.
3,653 permits on file since 1977 · last issued Nov 6, 2026
Email me new permitsAlso: every Frio County well in the statewide list, searchable → · a year of permits on the map →
- 7
- permits issued, 30d
- +0%
- vs prior 30d (7)
- 4
- operators filing
- 86%
- horizontal
- 10,550
- avg permitted depth, ft
- 576
- operators, all time
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 9, 2026 · WHY ISSUE AND SEEN DATES DIFFER
Permits issued by month
LAST 120 MONTHS · BY ISSUE DATE
Last 12 months 66 · prior 12 39(+69%)
Top operators, last 12 months
By permits issued. Wells are the operator’s current inventory here from the RRC wellbore file.
New entrants, last 12 months
Operators whose first permit in Frio County came in the last year. 1 in total.
- Central Gulf Petroleum Inc10 permitsDec 2, 2025 · new to Texas permits
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in Frio County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
| Formation | Wells | Permitted last 3 yrs | Median top, ft | P10–P90 |
|---|---|---|---|---|
| Austin Chalk | 1,355 | 63 | 6,395 | 5,332–7,556 |
| Olmos | 1,010 | 66 | 4,478 | 3,125–6,020 |
| Anacacho | 956 | 59 | 5,960 | 4,884–7,191 |
| Eagle Ford | 731 | 59 | 7,037 | 5,808–8,258 |
| Escondido | 588 | 61 | 3,724 | 2,998–5,014 |
| Navarro | 388 | 39 | 3,671 | 2,680–5,122 |
| Queen City | 308 | 2 | 1,362 | 942–2,191 |
| San Miguel | 277 | 17 | 5,137 | 4,330–5,803 |
| Buda | 245 | 22 | 6,870 | 5,800–8,098 |
| Wilcox | 132 | 12 | 2,930 | 1,204–3,888 |
| Midway | 128 | 17 | 3,124 | 2,414–3,704 |
| Carrizo | 86 | 2 | 1,540 | 608–2,275 |
| Georgetown | 51 | 19 | 6,602 | 5,812–7,850 |
| Pearsall | 41 | 17 | 9,451 | 5,380–11,400 |
| Del Rio | 27 | 10 | 6,777 | 5,888–7,775 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 147
- active UIC permits of 554
- 452K
- permitted bbl/day, active
- 14.6M
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in Frio County →
Permitted volume is a ceiling, not throughput. How to read it →
USGS catalog, Texas
Seismicity, last 2 years
- 443
- M2+ events in the area
- M3.6
- 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 |
|---|---|---|---|---|---|---|
| 919945 | Nov 9, 2026 | Nov 6, 2026 | Formentera Operations LLC | Sendero-Unit-B #S734HH | 10,500 | 16334458 |
| 919718 | Nov 7, 2026 | Nov 5, 2026 | Javelin Energy Partners Mgmt LLC | Double Ringer 101HA #101HAH | 14,000 | 16334452 |
| 919883 | Nov 7, 2026 | Nov 5, 2026 | Formentera Operations LLC | Julian #S731HH | 11,500 | 16334457 |
| 919882 | Nov 7, 2026 | Nov 5, 2026 | Formentera Operations LLC | Empire-Unit-B #N733HH | 11,500 | 16334456 |
| 919881 | Nov 7, 2026 | Nov 5, 2026 | Formentera Operations LLC | Empire-Unit-A #N731HH | 11,500 | 16334455 |
| 919563 | Nov 5, 2026 | Nov 3, 2026 | Texas American Resources Company | Treaty Oak #701HH | 11,000 | 16334450 |
| 919270 | Oct 18, 2026 | Oct 16, 2026 | Central Gulf Petroleum Inc | Cohn #1A | 3,850 | 16334448 |
| 919097 | Oct 9, 2026 | Oct 7, 2026 | Texas American Resources Company | Mojosa Ranch #706HH | 11,000 | 16334447 |
| 919096 | Oct 9, 2026 | Oct 7, 2026 | Texas American Resources Company | Mojosa Ranch #705HH | 11,000 | 16334446 |
| 918813 | Sep 25, 2026 | Sep 23, 2026 | Formentera Operations LLC | Rocky-Unit #S734HH | 10,000 | 16334445 |
Questions about Frio County
How many drilling permits were issued in Frio County in the last 12 months?
69 permits were issued in Frio County in the last 12 months, up 92% from 36 in the 12 months before. 75% were for horizontal wells. The most recent was issued Nov 6, 2026. 3,653 are on file since 1977.
Every Frio County permit →Who is the most active operator in Frio County?
By drilling permits filed in the last 12 months, Formentera Operations LLC is the most active operator in Frio County, with 35 of 69, followed by Rosewood Resources, Inc. (11) and Central Gulf Petroleum Inc (10). 5 operators filed permits here in the last 90 days.
Operators in Frio County →How many oil and gas wells are in Frio County?
4,858 wells are on file in Frio County, including 682 active, 2,757 plugged, and 30 permitted and not yet drilled. 1,441 are horizontal. The active wells are under 61 operators.
Every well in Frio County →How much oil and gas does Frio County produce?
The Railroad Commission files oil and gas production by lease, not by well or by county. Each lease with wells in Frio County is listed with its reported production on the county's Leases tab.
Leases in Frio County →How much water is injected in Frio County?
14.6 million barrels of water were injected in Frio County in the 12 months through June 2025, reported on form H-10. 147 of the county's 554 disposal and injection permits are active.
Disposal and injection in Frio County →What formations are drilled in Frio County?
Completion filings for wells in Frio County report tops for 15 formations in at least ten wells each. The most reported are the Austin Chalk (1,355 wells, median top 6,395 ft), the Olmos (1,010 wells, median top 4,478 ft), and the Anacacho (956 wells, median top 5,960 ft).
Formations in Frio County →What basin is Frio County in?
Petrora lists Frio County in the Eagle Ford Shale. It is in the Railroad Commission's District 01.
The Eagle Ford Shale →Have there been earthquakes in Frio County?
443 earthquakes of magnitude 2 or more were located in the area of Frio County's permitted wells in the last 2 years; the largest was M3.6.
Earthquakes in Frio 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/frio?days=30, documented in the API reference.