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JEFFERSON County

District 4 · Gulf Coast (Southwest) · Permits since 1977-06-07 · Data through 2026-07-20

All Permits Operators

Jefferson County permitting is running 1.7 permits a month over the trailing 90 days (5 total, down 62% on the prior quarter). 2 were issued in the past week. EXXONMOBIL LOW C SOL ON STOR LLC leads with 11 permits in the past 12 months, one of 6 operators active in the county. 2 operators filed a first Jefferson County permit in the past year. Median permitted depth over the past year is 7,816 ft (prior year: 8,000 ft); 0% of the past year's permits are horizontal.

Window
30d90d6mo1yrall
Custom to

Permits (30d)

3

vs Prior

+200%

Operators (30d)

2

Avg Depth (30d)

8,003

Hz % (30d)

0%

All Time

3,033

Depth Range: 150 - 23,000 ft
SWD wells in JEFFERSON County → 145 active injection & disposal wells · full UIC inventory

Permit Activity

Permit Types (30d)

RECOMP

2

NEW vs prior

DRILL

1

= vs prior

Top Operators

by permits, trailing 12 mo View All
OPERATORPERMITS 12MOWELLS
EXXONMOBIL LOW C SOL ON STOR LLC115
RHEACO OIL COMPANY, LTD.2172
KINGWOOD EXPLORATION LLC2167
GOLDEN TRIANGLE STORAGE, LLC210
MAGNETAR OPERATING LLC10
RUSK ENERGY OPERATING LLC10

Recent Permits

View All
PERMITLEASETYPEISSUED
917282MCFADDIN RANCHRECOMP2026-07-20
917269MCFADDIN RANCHRECOMP2026-07-20
916905GOLDEN TRIANGLE STORAGEDRILL2026-07-07
916286SUNFLOWER 2 AZMDRILL2026-06-10
915524GLADYS CITYDRILL2026-05-12
914942GOLDEN TRIANGLE STORAGEDRILL2026-04-21
912492GLADYS CITYDRILL2026-03-26
913843SPINDLETOP BAYOUDRILL2026-03-05
913423WILSON ET ALRENTR2026-02-13
913422A M CARPENTER ESTRENTR2026-02-13

New to JEFFERSON County

first county permit, past 12 mo
OPERATORFIRST PERMITPERMITSBACKGROUND
RUSK ENERGY OPERATING LLC2026-03-051active elsewhere in TX
MAGNETAR OPERATING LLC2025-11-131active elsewhere in TX

Formations Beneath JEFFERSON County

from RRC completion filings
FORMATIONWELLSMEDIAN TOP (FT)
Frio3057,636
Miocene (undifferentiated)2604,320
Yegua7712,244
Vicksburg708,300
Caprock641,068
Anahuac645,702
Jackson289,600