WELL · 42-389-37170 · DISTRICT 8
Toyah East 4-9 #83NH
Reeves County · Wolfbone (Trend Area) field · Horizontal
Toyah East 4-9 #83NH (API 42-389-37170) is a horizontal well in Reeves County operated by Oxy USA Wtp LP, completed October 3, 2018.
The RRC has issued one drilling permit (amended once), issued May 23, 2018, permitted to 14,000 ft.
Completion filings report 9 formation tops, including Castile, Permian (undifferentiated), Bell Canyon, Delaware.
Its 2 leases have reported 1.6M barrels of oil and 5.08M mcf of gas since October 2018, last reporting in July 2026. The leases carry 16 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit; TexNet located 27 M2+ earthquakes within 10 km over the last two years.
Operator of record
Houston, TX · P-5 Y, filed Sep 4, 2025 · 2,289 permits on file · (713) 215-7000
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 23, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 14,000
- total depth, ft
- 2
- permits on file
- May 23, 2018
- last permit issued
- Oct 3, 2018
- completed
- 1.6M
- cumulative oil, bbl
- 5.08M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 3, 2018
- Shut in
- —
- Plugged
- —
Surface location
31.273422, -103.432916
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Reeves County.
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 16 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 East 4-9 O-10-51089 | Wolfbone (Trend Area) | OXY USA WTP LP | 6 | 1.23M | 3.73M | Oct 2018 – 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 LPOct 2018 → Oct 2024
- 2Permian Resources Operating, LLCNov 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 840276-98 | Drill | OXY USA WTP LP | Apr 29, 2019 | May 23, 2018 | Jul 6, 2018 | 14,000 |
| 840276-99 | Drill | OXY USA WTP LP | May 21, 2018 | May 23, 2018 | Jul 6, 2018 | 14,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-51089 | — | — | — | — |
| — | — O-10-51089 | — | — | — | — |
| — | — O-10-57650 | — | — | — | — |
| — | — O-10-57650 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,614 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CastileCASTILLE | 958 | 1,656 |
| Permian (undifferentiated)PERMIAN | 958 | 1,656 |
| Bell Canyon | 4,983 | -2,369 |
| Delaware | 4,983 | -2,369 |
| DelawareDELAWARE CONSOLIDATED GAS | 5,010 | -2,396 |
| DelawareFORD-DELAWARE | 5,112 | -2,498 |
| Cherry Canyon | 5,958 | -3,344 |
| Bone SpringBONE SPRINGS | 8,078 | -5,464 |
| Ellenburger | — | — |
| Pennsylvanian | — | — |
| Wolfcamp | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,170 | 20,474 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,470 | 16 | 830 S |
| 9.625 | 10,163 | 12.25 | 1,555 S |
| 5.5 | 20,657 | 8.5 | 2,605 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 | Jan 27, 2025 | Sep 1, 2023 | — |
| 00 | Oct 18, 2022 | Jan 17, 2019 | Yes |
| 00 | May 5, 2021 | Jan 17, 2019 | Yes |
| 00 | May 6, 2019 | Jan 17, 2019 | 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 42-389-37170 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-37170 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Toyah West 4-942-389-37169
0.0 KM · OXY USA WTP LP · Section with this well →
| Castile | 958 | 1,656 |
| Permian (undifferentiated) | 958 | 1,656 |
| Bell Canyon | 4,981 | -2,367 |
| Delaware | 4,981 | -2,367 |
| Delaware | 5,004 | -2,390 |
| Delaware | 5,101 | -2,487 |
| Cherry Canyon | 5,951 | -3,337 |
| Bone Spring | 8,084 | -5,470 |
10 TOPS · FIRST 8
Toyah 4-9-7N42-389-37172
0.2 KM · OXY USA WTP LP · Section with this well →
| Permian (undifferentiated) | 958 | 1,656 |
| Castile | 958 | 1,656 |
| Bell Canyon | 4,985 | -2,371 |
| Delaware | 4,985 | -2,371 |
| Delaware | 5,025 | -2,411 |
| Delaware | 5,097 | -2,483 |
| Cherry Canyon | 5,956 | -3,342 |
| Bone Spring | 8,070 | -5,456 |
14 TOPS · FIRST 8
Toyah 4-9-4N42-389-37171
0.2 KM · OXY USA WTP LP · Section with this well →
| Castile | 958 | 1,656 |
| Permian (undifferentiated) | 958 | 1,656 |
| Bell Canyon | 4,988 | -2,374 |
| Delaware | 4,988 | -2,374 |
| Delaware | 5,025 | -2,411 |
| Delaware | 5,110 | -2,496 |
| Cherry Canyon | 5,952 | -3,338 |
| Bone Spring | 8,089 | -5,475 |
10 TOPS · FIRST 8
Toyah 4-9-5N42-389-36985
0.6 KM · OXY USA WTP LP · Section with this well →
| Permian (undifferentiated) | 831 | 1,783 |
| Castile | 831 | 1,783 |
| Bell Canyon | 5,005 | -2,391 |
| Delaware | 5,005 | -2,391 |
| Delaware | 5,048 | -2,434 |
| Delaware | 5,124 | -2,510 |
| Cherry Canyon | 5,965 | -3,351 |
| Bone Spring | 8,094 | -5,480 |
10 TOPS · FIRST 8
Hold MY Fosters B 1042-389-41502
1.3 KM · Greenlake Energy Operating, LLC · Section with this well →
| Bell Canyon | 4,994 | -2,382 |
| Cherry Canyon | 5,941 | -3,329 |
| Brushy Canyon | 7,064 | -4,452 |
| Bone Spring | 8,038 | -5,426 |
| Bone Spring | 9,675 | -7,063 |
| Permian (undifferentiated) | — | |
| Castile | — | |
| Delaware | — |
10 TOPS · FIRST 8
Hold MY Fosters 1042-389-41501
1.3 KM · Greenlake Energy Operating, LLC · Section with this well →
| Bell Canyon | 5,000 | -2,389 |
| Cherry Canyon | 5,949 | -3,338 |
| Brushy Canyon | 7,075 | -4,464 |
| Bone Spring | 8,044 | -5,433 |
| Bone Spring | 9,685 | -7,074 |
| Delaware | — | |
| Permian (undifferentiated) | — | |
| Delaware | — |
10 TOPS · FIRST 8
Apollo 2-11-1N42-389-38079
2.6 KM · OXY USA WTP LP · Section with this well →
| Castile | 1,750 | 869 |
| Permian (undifferentiated) | 1,750 | 869 |
| Delaware | 5,057 | -2,438 |
| Bell Canyon | 5,057 | -2,438 |
| Delaware | 5,111 | -2,492 |
| Cherry Canyon | 6,006 | -3,387 |
| Bone Spring | 8,125 | -5,506 |
| Wolfcamp | — |
10 TOPS · FIRST 8
Apollo 2-11-2N42-389-38081
2.6 KM · OXY USA WTP LP · Section with this well →
| Permian (undifferentiated) | 1,750 | 869 |
| Castile | 1,750 | 869 |
| Delaware | 5,044 | -2,425 |
| Bell Canyon | 5,044 | -2,425 |
| Delaware | 5,112 | -2,493 |
| Cherry Canyon | 5,999 | -3,380 |
| Bone Spring | 8,119 | -5,500 |
| Wolfcamp | 10,515 | -7,896 |
10 TOPS · FIRST 8
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 |
|---|---|---|---|---|---|
| 000125652 | H-1 Injection | Active | 10,000 | 3,700 | 9,887–10,727 |
TexNet catalog via USGS
Seismicity near this well
- 27
- M2+ events within 10 km, last 2 years
- M3.0
- largest
A proximity count, not an attribution. How to read it →
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/38937170, documented in the API reference.