COUNTIES · TEXAS GULF COAST · DISTRICT 04 · CODE 489
Willacy County, Texas
Willacy County has had no new drilling permits in the past 90 days; the most recent permit on record was issued September 11, 2025.
The county has 33 active disposal and injection permits, with 2.04M barrels injected in the 12 months reported through June 2025.
1,396 drilling permits have been issued in Willacy County since 1977.
1,396 permits on file since 1977 · last issued Sep 11, 2025
Watch Willacy CountyAlso: every Willacy County well in the statewide list, searchable → · a year of permits on the map →
- 0
- permits issued, 90d
- —
- vs prior 90d (0)
- 0
- operators filing
- —
- horizontal
- —
- avg permitted depth, ft
- 159
- operators, all time
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 7, 2026 · WHY ISSUE AND SEEN DATES DIFFER
Permits issued by month
LAST 120 MONTHS · BY ISSUE DATE
Last 12 months 0 · prior 12 1(-100%)
Operators by well inventory
No permits in the last year; ranked by wells on the RRC wellbore file instead.
New entrants, last 12 months
Operators whose first permit in Willacy County came in the last year. None.
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in Willacy County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
In Willacy County the Frio is reported in 101 wells, median top 7,580 ft, highlighted below. Back to the formation →
| Formation | Wells | Permitted last 3 yrs | Median top, ft | P10–P90 |
|---|---|---|---|---|
| Frio | 101 | 0 | 7,580 | 5,320–10,569 |
| Miocene (undifferentiated) | 64 | 0 | 4,892 | 2,276–5,855 |
| Anahuac | 19 | 0 | 5,900 | 5,636–6,900 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 33
- active UIC permits of 172
- 82.1K
- permitted bbl/day, active
- 2.04M
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in Willacy County →
Permitted volume is a ceiling, not throughput. How to read it →
USGS catalog, Texas
Seismicity, last 2 years
- 0
- M2+ events in the area
- —
- 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 |
|---|---|---|---|---|---|---|
| 910272 | Sep 11, 2025 | Sep 11, 2025 | Texas Oil and Gas Operating, LLC | Yturria RR #54RR | 4,500 | 48931291 |
| 889398 | Apr 12, 2023 | Apr 12, 2023 | Texas Oil and Gas Operating, LLC | Yturria #51 | 6,000 | 48931290 |
| 889398 | Apr 12, 2023 | Apr 12, 2023 | Texas Oil and Gas Operating, LLC | Yturria #51 | 6,700 | 48931290 |
| 889308 | Mar 24, 2023 | Mar 24, 2023 | Texas Oil and Gas Operating, LLC | Yturria #50 | 6,000 | 48931289 |
| 876404 | Feb 2, 2022 | Feb 2, 2022 | Texas Oil and Gas Operating, LLC | Yturria #25 | 6,200 | 48930949 |
| 876422 | Jan 31, 2022 | Jan 31, 2022 | Texas Oil and Gas Operating, LLC | Yturria Cattle Company #22 | 6,210 | 48930671 |
| 871157 | Jul 14, 2021 | Jul 14, 2021 | Dewbre Petroleum Corporation | Thomas Unit #1 | 12,200 | 48931141 |
| 864731 | Aug 18, 2020 | Aug 18, 2020 | Dewbre Petroleum Corporation | Thomas Unit #2 | 10,500 | 48931176 |
| 863765 | Jun 4, 2020 | Jun 4, 2020 | Texas Oil and Gas Operating, LLC | Yturria #9 | 10,600 | 48931191 |
| 828297 | Jun 30, 2017 | Jun 30, 2017 | Dewbre Petroleum Corporation | Cantu #1 | 6,733 | 48931218 |
Questions about Willacy County
How many drilling permits were issued in Willacy County in the last 12 months?
0 permits were issued in Willacy County in the last 12 months, down 100% from 1 in the 12 months before. The most recent was issued Sep 11, 2025. 1,396 are on file since 1977.
Every Willacy County permit →Which operator has the most wells in Willacy County?
No operator has filed a drilling permit in Willacy County in the last 12 months. By wells on file, the largest is Citation Oil & Gas Corp., with 284, followed by Chestnut Explor. and Prod. Inc. (68) and Texas Oil and Gas Operating LLC (61).
Operators in Willacy County →How many oil and gas wells are in Willacy County?
1,128 wells are on file in Willacy County, including 111 active, 683 plugged, and 1 permitted and not yet drilled. 0 are horizontal. The active wells are under 13 operators.
Every well in Willacy County →How much oil and gas does Willacy County produce?
The Railroad Commission files oil and gas production by lease, not by well or by county. Each lease with wells in Willacy County is listed with its reported production on the county's Leases tab.
Leases in Willacy County →How much water is injected in Willacy County?
2.0 million barrels of water were injected in Willacy County in the 12 months through June 2025, reported on form H-10. 33 of the county's 172 disposal and injection permits are active.
Disposal and injection in Willacy County →What formations are drilled in Willacy County?
Completion filings for wells in Willacy County report tops for 3 formations in at least ten wells each. The most reported are the Frio (101 wells, median top 7,580 ft), the Miocene (undifferentiated) (64 wells, median top 4,892 ft), and the Anahuac (19 wells, median top 5,900 ft).
Formations in Willacy County →What basin is Willacy County in?
Petrora lists Willacy County in the Texas Gulf Coast. It is in the Railroad Commission's District 04.
The Texas Gulf Coast →Have there been earthquakes in Willacy County?
No earthquakes of magnitude 2 or more were located in the area of Willacy County's permitted wells in the last 2 years.
Earthquakes in Willacy 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/willacy?days=90, documented in the API reference.