COUNTIES · EAGLE FORD SHALE · DISTRICT 01 · CODE 491
Williamson County
Williamson County has had no new drilling permits in the past 90 days; the most recent permit on record was issued July 11, 2024.
The county has 2 active disposal and injection permits.
321 drilling permits have been issued in Williamson County since 1977.
321 permits on file since 1977 · last issued Jul 11, 2024
Watch Williamson CountyAlso: every Williamson 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
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- avg permitted depth, ft
- 140
- operators, all time
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026 · WHY ISSUE AND SEEN DATES DIFFER
Permits issued by month
LAST 17 MONTHS · BY ISSUE DATE
Last 12 months 21
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 Williamson County came in the last year. None.
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in Williamson County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
In Williamson County the Navarro is reported in 14 wells, median top 532 ft, highlighted below. Back to the formation →
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 2
- active UIC permits of 14
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in Williamson County →
Permitted volume is a ceiling, not throughput. How to read it →
TexNet catalog via USGS
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 |
|---|---|---|---|---|---|---|
| 901117 | Jul 11, 2024 | Jul 11, 2024 | North Texas Energy,inc. | Rieger #10 | 1,500 | 49130504 |
| 899899 | May 23, 2024 | May 23, 2024 | Walker Operating Company | Warner #1 | 1,600 | 49130503 |
| 897503 | Feb 26, 2024 | Feb 26, 2024 | Walker Operating Company | Alan #1 | 1,000 | 49130501 |
| 897485 | Feb 22, 2024 | Feb 22, 2024 | Walker Operating Company | Joseph #1 | 1,000 | 49130502 |
| 897434 | Feb 22, 2024 | Feb 22, 2024 | Walker Operating Company | Daniel #2 | 1,000 | 49130500 |
| 897433 | Feb 22, 2024 | Feb 22, 2024 | Walker Operating Company | Daniel #1 | 1,000 | 49130499 |
| 887604 | Jan 26, 2023 | Jan 26, 2023 | North Texas Energy,inc. | Spellings #2 | 2,000 | 49130497 |
| 885727 | Nov 21, 2022 | Nov 21, 2022 | Flint Hills Resources, LC | Storm TPL1 #1 | 350 | 49130496 |
| 877323 | Feb 28, 2022 | Feb 28, 2022 | Walker Operating Company | Poldrack #3 | 1,850 | 49130495 |
| 877322 | Feb 28, 2022 | Feb 28, 2022 | Walker Operating Company | Poldrack #2 | 1,850 | 49130494 |
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/williamson?days=90, documented in the API reference.