WELL · 42-389-35975 · DISTRICT 8
Toyah 4-9 Pilot Unit #12H
Reeves County · Wolfbone (Trend Area) field · Producing · Horizontal
Toyah 4-9 Pilot Unit #12H (API 42-389-35975) is a horizontal well in Reeves County operated by Permian Resources Operating LLC, completed August 22, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 15, 2017, permitted to 10,693 ft.
It was permitted by Oxy USA Wtp LP and has since transferred to Permian Resources Operating LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Castile, Permian (undifferentiated), Bell Canyon, Delaware.
Its 2 leases have reported 1.48M barrels of oil and 3.47M mcf of gas since June 2017, last reporting in July 2026. The leases carry 14 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit.
Operator of record
Permian Resources Operating LLC
Permitted by OXY USA WTP LP; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 25, 2025
- Permits on file
- 608
- Phone
- (432) 695-4222
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | OXY USA WTP LP |
| Production reports | Permian Resources Operating, LLCthrough Apr 2026 |
| Latest permit | OXY USA WTP LPMay 15, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,693
- total depth, ft
- 1
- permits on file
- May 15, 2017
- last permit issued
- Aug 22, 2017
- completed
- 1.48M
- cumulative oil, bbl
- 3.47M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 22, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 14 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Toyah 4-9 Pilot Unit O-10-57650 | Wolfbone (Trend Area) | Permian Resources Operating, LLC | 10 | 364K | 1.35M | Oct 2022 – Jul 2026 |
| Toyah West 4-9 O-10-48938 | Wolfbone (Trend Area) | OXY USA WTP LP | 4 | 1.11M | 2.12M | Jun 2017 – Mar 2023 |
Oil, barrels lease total
Last 12 months 87,678 · prior 12 93,708(-6%)
Gas, mcf lease total
Last 12 months 268,401 · prior 12 327,699(-18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1OXY USA WTP LPJun 2017 → Oct 2024
- 2Permian Resources Operating, LLCNov 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 826375-99 | Drill | OXY USA WTP LP | May 8, 2017 | May 15, 2017 | Jun 10, 2017 | 14,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 22, 2017 | Toyah 4-9 Pilot Unit O-10-57650 | Wolfbone (Trend Area) | Permian Resources Operating LLC | Producing | 10,693 |
| Aug 22, 2017 | Toyah West 4-9 O-10-48938 | Wolfbone (Trend Area) | OXY USA WTP LP | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,614 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CastileCASTILLE | 923 | 1,691 |
| Permian (undifferentiated)PERMIAN | 923 | 1,691 |
| Bell Canyon | 4,888 | -2,274 |
| Delaware | 4,888 | -2,274 |
| DelawareDELAWARE CONSOLIDATED GAS | 4,915 | -2,301 |
| DelawareFORD-DELAWARE | 5,092 | -2,478 |
| Cherry Canyon | 5,940 | -3,326 |
| Bone SpringBONE SPRINGS | 8,079 | -5,465 |
| Wolfcamp | 10,457 | -7,843 |
| Pennsylvanian | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,583 | 20,473 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.75 | 1,610 | 16 | 845 S |
| 9.625 | 10,190 | 12.25 | 1,765 S |
| 5.5 | 20,716 | 8.5 | 2,405 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Oct 18, 2022 | Jan 23, 2018 | Yes |
| 00 | Mar 13, 2018 | Jan 23, 2018 | Yes |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-389-35975 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35975 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000125648 | H-1 Injection | Active | 10,000 | 3,700 | 9,887–10,727 |
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/38935975, documented in the API reference.