Petrora

COUNTIES · TEXAS GULF COAST · DISTRICT 03 · CODE 455

Trinity County

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 County

Also: every Trinity County well in the statewide list, searchable → · a year of permits on the map →

Window30 days90 days180 days365 days
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 OCT 29, 2026 · WHY ISSUE AND SEEN DATES DIFFER

Permits issued by month

LAST 11 MONTHS · BY ISSUE DATE

Last 12 months 23

05102017201820232026

Top operators, last 12 months

By permits issued. Wells are the operator’s current inventory here from the RRC wellbore file.

OperatorPermitsWells
Walker Operating Company140

Full operator directory →

New entrants, last 12 months

Operators whose first permit in Trinity County came in the last year. 1 in total.

Permit types, 90d

TypeWindowPriorAll time
Drill12269

What the types mean →

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 →

Fewer than ten wells in Trinity County report the Edwards, so it is below this table's cutoff. Back to the formation →

FormationWellsPermitted last 3 yrsMedian top, ftP10–P90
Carrizo3801,8301,792–2,279
Queen City3701,5541,377–1,860
Wilcox3202,7921,912–3,146
Austin Chalk2809,2327,449–9,703
Woodbine2609,5447,780–9,974
Sparta2401,108687–1,500
Buda21010,3258,074–10,540
Georgetown14010,3839,409–10,581
Weches1401,3761,343–1,433

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

PermitSeenIssuedOperatorLease / wellDepthAPI
918801Sep 26, 2026Sep 24, 2026Walker Operating CompanyDue #21,85045530534
916438Jun 22, 2026Jun 22, 2026Walker Operating CompanyDue #11,80045530533
916438Jun 22, 2026Jun 22, 2026Walker Operating CompanyDue #11,80045530533
913824Mar 9, 2026Mar 9, 2026Walker Operating CompanyFry #32,95045530532
913821Mar 9, 2026Mar 9, 2026Walker Operating CompanyFry #22,55045530531
913779Mar 4, 2026Mar 4, 2026Walker Operating CompanyFry #12,67545530530
913826Mar 4, 2026Mar 4, 2026Walker Operating CompanyLittle #52,07545530528
913779Mar 4, 2026Mar 4, 2026Walker Operating CompanyFry #13,00045530530
913827Mar 3, 2026Mar 3, 2026Walker Operating CompanyLittle #62,07545530529
913825Mar 3, 2026Mar 3, 2026Walker Operating CompanyLittle #42,07545530527

All Trinity County permits →

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.