COUNTIES · PERMIAN BASIN · DISTRICT 8A · CODE 269
King County, Texas
King County permitting is running 2.3 permits a month over the trailing 90 days (7 total, versus 3 in the prior quarter). 1 was issued in the past week.
Halliburton Operating Company leads with 6 permits in the past 12 months, one of 6 operators active in the county.
2 operators filed a first King County permit in the past year.
Median permitted depth over the past year is 4,500 ft (prior year: 9,000 ft); 0% of the past year's permits are horizontal.
The county has 154 active disposal and injection permits, with 15.8M barrels injected in the 12 months reported through June 2025.
2,897 drilling permits have been issued in King County since 1977.
2,897 permits on file since 1977 · last issued Nov 2, 2026
Watch King CountyAlso: every King County well in the statewide list, searchable → · a year of permits on the map →
- 7
- permits issued, 90d
- +133%
- vs prior 90d (3)
- 4
- operators filing
- 0%
- horizontal
- 5,000
- avg permitted depth, ft
- 228
- 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 18(-22%)
Top operators, last 12 months
By permits issued. Wells are the operator’s current inventory here from the RRC wellbore file.
| Operator | Permits | Wells |
|---|---|---|
| Halliburton Operating Company | 6 | 1 |
| High River Res Operating, LLC | 3 | 401 |
| Medders Oil Company, Inc. | 3 | 133 |
| NBX Energy, LLC | 2 | 0 |
| Salida Exploration, LLC | 1 | 16 |
| Geosurveys, Inc. | 1 | 0 |
New entrants, last 12 months
Operators whose first permit in King County came in the last year. 2 in total.
- NBX Energy, LLC2 permitsApr 29, 2026 · active elsewhere first
- Geosurveys, Inc.1 permitJun 22, 2026 · active elsewhere first
Formations in completed wells
RRC WELLBORE FILE · ≥10 WELLS
Tops reported on completion filings for wells in King 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 King County report the Clearfork, so it is below this table's cutoff. Back to the formation →
| Formation | Wells | Permitted last 3 yrs | Median top, ft | P10–P90 |
|---|---|---|---|---|
| Tannehill | 457 | 9 | 3,130 | 2,693–3,792 |
| Strawn | 401 | 4 | 5,226 | 5,047–5,437 |
| Coleman Junction | 371 | 11 | 2,482 | 2,151–3,160 |
| Cisco | 333 | 8 | 3,581 | 3,407–3,869 |
| Canyon | 163 | 6 | 4,380 | 3,841–5,090 |
| Mississippian | 148 | 0 | 5,885 | 5,749–6,030 |
| Saddle Creek | 121 | 0 | 2,980 | 2,832–3,878 |
| Caddo | 86 | 0 | 5,675 | 5,608–5,874 |
| Pennsylvanian | 54 | 1 | 5,286 | 5,199–5,403 |
| Bend | 32 | 0 | 5,824 | 5,691–5,992 |
| Atoka | 14 | 0 | 6,026 | 5,879–6,137 |
| Des Moines | 13 | 1 | 5,232 | 4,858–5,402 |
| Palo Pinto | 11 | 0 | 3,009 | 1,513–3,086 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 154
- active UIC permits of 537
- 479K
- permitted bbl/day, active
- 15.8M
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Every active well, operator, and daily reporter in King 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 |
|---|---|---|---|---|---|---|
| 919844 | Nov 4, 2026 | Nov 2, 2026 | Salida Exploration, LLC | Simpson #7A | 4,000 | 26933077 |
| 919710 | Oct 30, 2026 | Oct 28, 2026 | Medders Oil Company, Inc. | Pitchfork Tttt #4 | 4,500 | 26933076 |
| 917891 | Sep 30, 2026 | Sep 27, 2026 | Halliburton Operating Company | Pearls 'A' #2 | 4,000 | 26933073 |
| 917996 | Sep 18, 2026 | Sep 16, 2026 | High River Res Operating, LLC | Burnett Ranch CO2 Flood 'PA1' #1BI | 6,100 | 26933015 |
| 917999 | Sep 11, 2026 | Sep 9, 2026 | High River Res Operating, LLC | Burnett Ranch CO2 Flood 'PA1' #1WI | 6,100 | 26933017 |
| 918181 | Sep 3, 2026 | Sep 1, 2026 | Halliburton Operating Company | Legacy South #1 | 4,200 | 26933074 |
| 917997 | Aug 27, 2026 | Aug 24, 2026 | High River Res Operating, LLC | Burnett Ranch CO2 Flood 'PA1' #1MI | 6,100 | 26933016 |
| 916338 | Jun 22, 2026 | Jun 22, 2026 | Geosurveys, Inc. | Boc 'A' #1 | 6,200 | 26933072 |
| 916295 | Jun 10, 2026 | Jun 10, 2026 | Halliburton Operating Company | Croton Creek #1 | 4,000 | 26933071 |
| 915735 | Jun 8, 2026 | Jun 8, 2026 | Halliburton Operating Company | Pearls #2 | 4,000 | 26933070 |
Questions about King County
How many drilling permits were issued in King County in the last 12 months?
16 permits were issued in King County in the last 12 months, level with 16 in the 12 months before. 0% were for horizontal wells. The most recent was issued Nov 2, 2026. 2,897 are on file since 1977.
Every King County permit →Who is the most active operator in King County?
By drilling permits filed in the last 12 months, Halliburton Operating Company is the most active operator in King County, with 6 of 16, followed by High River Res Operating, LLC (3) and Medders Oil Company, Inc. (3). 4 operators filed permits here in the last 90 days.
Operators in King County →How many oil and gas wells are in King County?
2,722 wells are on file in King County: 414 active, 1,850 plugged, and 9 permitted and not yet drilled. 5 are horizontal, and 24 operators hold them.
Every well in King County →How much oil and gas does King County produce?
The Railroad Commission files oil and gas production by lease, not by well or by county. Each lease with wells in King County is listed with its reported production on the county's Leases tab.
Leases in King County →How much water is injected in King County?
15.8 million barrels of water were injected in King County in the 12 months through June 2025, reported on form H-10. 154 of the county's 537 disposal and injection permits are active.
Disposal and injection in King County →What formations are drilled in King County?
Completion filings for wells in King County report tops for 13 formations in at least ten wells each. The most reported are the Tannehill (457 wells, median top 3,130 ft), the Strawn (401 wells, median top 5,226 ft), and the Coleman Junction (371 wells, median top 2,482 ft).
Formations in King County →What basin is King County in?
Petrora lists King County in the Permian Basin. It is in the Railroad Commission's District 8A.
The Permian Basin →Have there been earthquakes in King County?
TexNet located no earthquakes of magnitude 2 or more in the area of King County's permitted wells in the last 2 years.
Earthquakes in King 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/king?days=90, documented in the API reference.