COUNTIES · TEXAS GULF COAST · DISTRICT 03 · CODE 185
Grimes County
Grimes County permitting is running 0.3 permits a month over the trailing 90 days (1 total, after a quiet prior quarter).
CML Exploration, LLC leads with 1 permit in the past 12 months, the only operator active in the county.
Median permitted depth over the past year is 8,950 ft (prior year: 12,000 ft); 100% of the past year's permits are horizontal.
The county has 10 active disposal and injection permits, with 3.06M barrels injected in the 12 months reported through June 2025.
1,016 drilling permits have been issued in Grimes County since 1977.
1,016 permits on file since 1977 · last issued Sep 15, 2026
Watch Grimes CountyAlso: every Grimes County well in the statewide list, searchable → · a year of permits on the map →
- 1
- permits issued, 90d
- —
- vs prior 90d (0)
- 1
- operators filing
- 100%
- horizontal
- 8,950
- avg permitted depth, ft
- 185
- operators, all time
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026 · WHY ISSUE AND SEEN DATES DIFFER
Permits issued by month
LAST 25 MONTHS · BY ISSUE DATE
Last 12 months 18 · prior 12 18(+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 |
|---|---|---|
| CML Exploration, LLC | 1 | 35 |
New entrants, last 12 months
Operators whose first permit in Grimes County came in the last year. None.
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in Grimes County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
In Grimes County the Eagle Ford is reported in 26 wells, median top 10,613 ft, highlighted below. Back to the formation →
| Formation | Wells | Permitted last 3 yrs | Median top, ft | P10–P90 |
|---|---|---|---|---|
| Austin Chalk | 322 | 1 | 11,354 | 8,466–14,067 |
| Woodbine | 94 | 0 | 9,022 | 8,742–9,617 |
| Pecan Gap | 84 | 0 | 11,980 | 8,334–13,768 |
| Buda | 66 | 1 | 10,020 | 9,506–10,752 |
| Sub-Clarksville | 65 | 0 | 8,978 | 8,768–9,999 |
| Wilcox | 64 | 3 | 2,876 | 1,897–7,363 |
| Georgetown | 59 | 1 | 10,171 | 9,535–12,157 |
| Midway | 28 | 0 | 7,095 | 5,056–10,994 |
| Eagle Ford | 26 | 0 | 10,613 | 8,941–14,464 |
| Jackson | 17 | 2 | 2,495 | 1,541–3,554 |
| Navarro | 17 | 0 | 8,846 | 7,715–11,059 |
| Cook Mountain | 16 | 1 | 2,464 | 102–4,075 |
| Yegua | 15 | 1 | 3,665 | 2,664–4,512 |
| Taylor | 14 | 0 | 12,235 | 9,809–13,890 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 10
- active UIC permits of 26
- 110K
- permitted bbl/day, active
- 3.06M
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in Grimes 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 |
|---|---|---|---|---|---|---|
| 918607 | Sep 17, 2026 | Sep 15, 2026 | CML Exploration, LLC | Nevill AC #1H | 8,950 | 18530904 |
| 910121 | Sep 16, 2025 | Sep 16, 2025 | Paleo Oil Company LLC | N. T. Breaux #01 | 3,000 | 18530867 |
| 909557 | Aug 1, 2025 | Aug 1, 2025 | Galloway Energy Co. | T.J. Tucker Unit No. 2 #3 | 12,800 | 18530902 |
| 909151 | Jul 16, 2025 | Jul 16, 2025 | Magnetar Operating LLC | Ashley #1 | 14,000 | 18530901 |
| 909151 | Jul 16, 2025 | Jul 16, 2025 | Magnetar Operating LLC | Ashley #1 | 14,000 | 18530901 |
| 909195 | Jul 15, 2025 | Jul 15, 2025 | CML Exploration, LLC | Knotts #1REH | 9,300 | 18530641 |
| 908120 | May 22, 2025 | May 22, 2025 | National Oilwell Varco, L.P. | Nov-Rdtc Test Well #4000D | 12,000 | 18530892 |
| 906019 | Feb 20, 2025 | Feb 20, 2025 | Galloway Energy Co. | Tucker, T.J. #1 | 9,680 | 18530233 |
| 891515 | Jun 27, 2023 | Jun 27, 2023 | National Oilwell Varco, L.P. | Nov-Rdtc Test Well #4000D | 12,000 | 18530892 |
| 879514 | May 4, 2022 | May 4, 2022 | Pride Energy Company | Lewis #2 | 5,500 | 18530900 |
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/grimes?days=90, documented in the API reference.