COUNTIES · PERMIAN BASIN · DISTRICT 7C · CODE 307
McCulloch County, Texas
Mcculloch County has had no new drilling permits in the past 90 days; the most recent permit on record was issued May 19, 2026.
Enterprise Products Operatingllc leads with 1 permit in the past 12 months, the only operator active in the county.
Median permitted depth over the past year is 400 ft; 0% of the past year's permits are horizontal.
The county has 19 active disposal and injection permits, with 625K barrels injected in the 12 months reported through June 2025.
912 drilling permits have been issued in Mcculloch County since 1977.
912 permits on file since 1977 · last issued May 19, 2026
Watch McCulloch CountyAlso: every McCulloch County well in the statewide list, searchable → · a year of permits on the map →
- 0
- permits issued, 30d
- —
- vs prior 30d (0)
- 0
- operators filing
- —
- horizontal
- —
- avg permitted depth, ft
- 211
- operators, all time
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 6, 2026 · WHY ISSUE AND SEEN DATES DIFFER
Permits issued by month
LAST 120 MONTHS · BY ISSUE DATE
Last 12 months 1 · 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 |
|---|---|---|
| Enterprise Products Operatingllc | 1 | 0 |
New entrants, last 12 months
Operators whose first permit in McCulloch County came in the last year. None.
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in McCulloch County. A well counts for every formation it reports, so this reads as the county's stratigraphic column. About tops →
| Formation | Wells | Permitted last 3 yrs | Median top, ft | P10–P90 |
|---|---|---|---|---|
| Strawn | 128 | 0 | 1,194 | 773–1,421 |
| Canyon | 67 | 0 | 1,111 | 641–1,566 |
| Palo Pinto | 64 | 0 | 1,086 | 573–1,200 |
| Caddo | 31 | 0 | 1,050 | 735–1,540 |
| Marble Falls | 24 | 0 | 1,136 | 804–1,328 |
| Ellenburger | 10 | 0 | 1,282 | 797–2,100 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 19
- active UIC permits of 59
- 10.9K
- permitted bbl/day, active
- 625K
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in McCulloch 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 |
|---|---|---|---|---|---|---|
| 915653 | May 19, 2026 | May 19, 2026 | Enterprise Products Operatingllc | SE-230 #1 | 400 | 30731218 |
| 879642 | May 24, 2022 | May 24, 2022 | Flint Rock Resources Mgmnt, Inc. | Appleton #21B | 1,200 | 30731217 |
| 879640 | May 24, 2022 | May 24, 2022 | Flint Rock Resources Mgmnt, Inc. | Appleton #20B | 1,200 | 30731216 |
| 876393 | Feb 1, 2022 | Feb 1, 2022 | Flint Rock Resources Mgmnt, Inc. | Appleton #19B | 1,200 | 30731214 |
| 866504 | Dec 18, 2020 | Dec 18, 2020 | Discovery Operating, Inc. | White Ranch A #3 | 1,500 | 30731207 |
| 866120 | Nov 18, 2020 | Nov 18, 2020 | Flint Rock Resources Mgmnt, Inc. | Appleton #18B | 1,200 | 30731213 |
| 866119 | Nov 18, 2020 | Nov 18, 2020 | Flint Rock Resources Mgmnt, Inc. | Appleton #17B | 1,200 | 30731212 |
| 866117 | Nov 18, 2020 | Nov 18, 2020 | Flint Rock Resources Mgmnt, Inc. | Appleton #16B | 1,200 | 30731211 |
| 866114 | Nov 18, 2020 | Nov 18, 2020 | Flint Rock Resources Mgmnt, Inc. | Appleton #15B | 1,200 | 30731210 |
| 863825 | Jun 10, 2020 | Jun 10, 2020 | Discovery Operating, Inc. | White Ranch 'A' #4 | 1,500 | 30731209 |
Questions about McCulloch County
How many drilling permits were issued in McCulloch County in the last 12 months?
1 permit was issued in McCulloch County in the last 12 months. 0% were for horizontal wells. The most recent was issued May 19, 2026. 912 are on file since 1977.
Every McCulloch County permit →Who is the most active operator in McCulloch County?
By drilling permits filed in the last 12 months, Enterprise Products Operatingllc is the most active operator in McCulloch County, with 1 of 1. 0 operators filed permits here in the last 90 days.
Operators in McCulloch County →How many oil and gas wells are in McCulloch County?
1,065 wells are on file in McCulloch County: 94 active, 814 plugged, and 1 permitted and not yet drilled. 1 is horizontal, and 12 operators hold them.
Every well in McCulloch County →How much oil and gas does McCulloch County produce?
The Railroad Commission files oil and gas production by lease, not by well or by county. Each lease with wells in McCulloch County is listed with its reported production on the county's Leases tab.
Leases in McCulloch County →How much water is injected in McCulloch County?
624,736 barrels of water were injected in McCulloch County in the 12 months through June 2025, reported on form H-10. 19 of the county's 59 disposal and injection permits are active.
Disposal and injection in McCulloch County →What formations are drilled in McCulloch County?
Completion filings for wells in McCulloch County report tops for 6 formations in at least ten wells each. The most reported are the Strawn (128 wells, median top 1,194 ft), the Canyon (67 wells, median top 1,111 ft), and the Palo Pinto (64 wells, median top 1,086 ft).
Formations in McCulloch County →What basin is McCulloch County in?
Petrora lists McCulloch County in the Permian Basin. It is in the Railroad Commission's District 7C.
The Permian Basin →Have there been earthquakes in McCulloch County?
TexNet located no earthquakes of magnitude 2 or more in the area of McCulloch County's permitted wells in the last 2 years.
Earthquakes in McCulloch 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/mcculloch?days=30, documented in the API reference.