COUNTIES · TEXAS GULF COAST · DISTRICT 03 · CODE 455
Trinity County, Texas
Trinity County permitting is running 0.3 permits a month over the trailing 90 days (1 total, versus 2 in the prior quarter).
Walker Operating Company leads with 14 permits in the past 12 months, the only operator active in the county.
One operator filed a first Trinity County permit in the past year.
Median permitted depth over the past year is 2,075 ft; 0% of the past year's permits are horizontal.
The county has 2 active disposal and injection permits, with 304K barrels injected in the 12 months reported through June 2025.
313 drilling permits have been issued in Trinity County since 1977.
313 permits on file since 1977 · last issued Sep 24, 2026
Watch Trinity CountyAlso: every Trinity County well in the statewide list, searchable → · a year of permits on the map →
- 1
- permits issued, 90d
- -50%
- vs prior 90d (2)
- 1
- operators filing
- 0%
- horizontal
- 1,850
- avg permitted depth, ft
- 93
- 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 14 · prior 12 0
Top operators, last 12 months
By permits issued. Wells are the operator’s current inventory here from the RRC wellbore file.
| Operator | Permits | Wells |
|---|---|---|
| Walker Operating Company | 14 | 0 |
New entrants, last 12 months
Operators whose first permit in Trinity County came in the last year. 1 in total.
- Walker Operating Company14 permitsFeb 18, 2026 · active elsewhere first
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in Trinity County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
In Trinity County the Sparta is reported in 24 wells, median top 1,108 ft, highlighted below. Back to the formation →
| Formation | Wells | Permitted last 3 yrs | Median top, ft | P10–P90 |
|---|---|---|---|---|
| Carrizo | 38 | 0 | 1,830 | 1,792–2,279 |
| Queen City | 37 | 0 | 1,554 | 1,377–1,860 |
| Wilcox | 32 | 0 | 2,792 | 1,912–3,146 |
| Austin Chalk | 28 | 0 | 9,232 | 7,449–9,703 |
| Woodbine | 26 | 0 | 9,544 | 7,780–9,974 |
| Sparta | 24 | 0 | 1,108 | 687–1,500 |
| Buda | 21 | 0 | 10,325 | 8,074–10,540 |
| Georgetown | 14 | 0 | 10,383 | 9,409–10,581 |
| Weches | 14 | 0 | 1,376 | 1,343–1,433 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 2
- active UIC permits of 7
- 8.5K
- permitted bbl/day, active
- 304K
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in Trinity 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 |
|---|---|---|---|---|---|---|
| 918801 | Sep 26, 2026 | Sep 24, 2026 | Walker Operating Company | Due #2 | 1,850 | 45530534 |
| 916438 | Jun 22, 2026 | Jun 22, 2026 | Walker Operating Company | Due #1 | 1,800 | 45530533 |
| 916438 | Jun 22, 2026 | Jun 22, 2026 | Walker Operating Company | Due #1 | 1,800 | 45530533 |
| 913824 | Mar 9, 2026 | Mar 9, 2026 | Walker Operating Company | Fry #3 | 2,950 | 45530532 |
| 913821 | Mar 9, 2026 | Mar 9, 2026 | Walker Operating Company | Fry #2 | 2,550 | 45530531 |
| 913779 | Mar 4, 2026 | Mar 4, 2026 | Walker Operating Company | Fry #1 | 2,675 | 45530530 |
| 913826 | Mar 4, 2026 | Mar 4, 2026 | Walker Operating Company | Little #5 | 2,075 | 45530528 |
| 913779 | Mar 4, 2026 | Mar 4, 2026 | Walker Operating Company | Fry #1 | 3,000 | 45530530 |
| 913827 | Mar 3, 2026 | Mar 3, 2026 | Walker Operating Company | Little #6 | 2,075 | 45530529 |
| 913825 | Mar 3, 2026 | Mar 3, 2026 | Walker Operating Company | Little #4 | 2,075 | 45530527 |
Questions about Trinity County
How many drilling permits were issued in Trinity County in the last 12 months?
14 permits were issued in Trinity County in the last 12 months. 0% were for horizontal wells. The most recent was issued Sep 24, 2026. 313 are on file since 1977.
Every Trinity County permit →Who is the most active operator in Trinity County?
By drilling permits filed in the last 12 months, Walker Operating Company is the most active operator in Trinity County, with 14 of 14. 1 operator filed permits here in the last 90 days.
Operators in Trinity County →How many oil and gas wells are in Trinity County?
264 wells are on file in Trinity County: 28 active, 163 plugged, and 9 permitted and not yet drilled. 9 are horizontal, and 5 operators hold them.
Every well in Trinity County →How much oil and gas does Trinity County produce?
The Railroad Commission files oil and gas production by lease, not by well or by county. Each lease with wells in Trinity County is listed with its reported production on the county's Leases tab.
Leases in Trinity County →How much water is injected in Trinity County?
304,467 barrels of water were injected in Trinity County in the 12 months through June 2025, reported on form H-10. 2 of the county's 7 disposal and injection permits are active.
Disposal and injection in Trinity County →What formations are drilled in Trinity County?
Completion filings for wells in Trinity County report tops for 9 formations in at least ten wells each. The most reported are the Carrizo (38 wells, median top 1,830 ft), the Queen City (37 wells, median top 1,554 ft), and the Wilcox (32 wells, median top 2,792 ft).
Formations in Trinity County →What basin is Trinity County in?
Petrora lists Trinity County in the Texas Gulf Coast. It is in the Railroad Commission's District 03.
The Texas Gulf Coast →Have there been earthquakes in Trinity County?
TexNet located no earthquakes of magnitude 2 or more in the area of Trinity County's permitted wells in the last 2 years.
Earthquakes in Trinity 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/trinity?days=90, documented in the API reference.