WELL · 42-389-35573 · DISTRICT 8
Waler State Unit 4 #1WA
Reeves County · Horizontal
Waler State Unit 4 #1WA (API 42-389-35573) is a permitted horizontal well in Reeves County filed by Diamondback E&P LLC; no completion report is on file yet.
The RRC has issued 2 drilling permits between 2016 and 2022, permitted to 12,000 ft.
Completion filings report 8 formation tops, including Castile, Delaware, Bell Canyon, Cherry Canyon.
Its 2 leases have reported 1.4M barrels of oil and 2.68M mcf of gas since May 2017, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,231 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Diamondback E&P LLCMar 28, 2022 |
- 12,000
- total depth, ft
- 2
- permits on file
- Mar 28, 2022
- last permit issued
- —
- completed
- 1.4M
- cumulative oil, bbl
- 2.68M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
31.353907, -103.219712
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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Waler State Unit 4 O-10-56980 | Hoefs T-K (Wolfcamp) | Diamondback E&P LLC | 3 | 387K | 1.1M | Feb 2022 – Jul 2026 |
| Waler State Unit 4 O-10-49374 | Phantom (Wolfcamp) | Diamondback E&P LLC | 3 | 1.01M | 1.58M | May 2017 – Jun 2022 |
Oil, barrels lease total
Last 12 months 56,285 · prior 12 74,572(-25%)
Gas, mcf lease total
Last 12 months 189,041 · prior 12 219,157(-14%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Diamondback E&P LLCMay 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 877944-99 | Field transfer | Diamondback E&P LLC | Mar 10, 2022 | Mar 28, 2022 | — | 11,093 |
| 821124-99 | Drill | Diamondback E&P LLC | Dec 9, 2016 | Dec 27, 2016 | Mar 2, 2017 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-49374 | — | — | — | — |
| — | — O-10-56980 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,562 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CastileCASTILLE | 3,000 | -438 |
| Delaware | 5,007 | -2,445 |
| Delaware | 5,018 | -2,456 |
| Bell Canyon | 5,038 | -2,476 |
| Bell Canyon | 5,049 | -2,487 |
| Cherry Canyon | 5,808 | -3,246 |
| Bone SpringBONE SPRINGS | 8,147 | -5,585 |
| Wolfcamp | 10,587 | -8,025 |
| DelawareDELAWARE CONSOLIDATED GAS | — | — |
| DelawareFORD-DELAWARE | — | — |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,922 | 21,202 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 2,297 | 17.5 | 2,180 S |
| 9.625 | 10,130 | 12.25 | 2,195 S |
| 5.5 | 21,296 | 8.5 | 3,010 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 | Jun 8, 2022 | Apr 8, 2022 | — |
| 00 | May 23, 2022 | Dec 7, 2017 | Yes |
| 00 | Feb 14, 2018 | Dec 7, 2017 | 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 42-389-35573 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35573 → 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.
Waler State Unit 442-389-37848
0.2 KM · Diamondback E&P LLC · Section with this well →
| Bell Canyon | 5,007 | -2,442 |
| Cherry Canyon | 5,867 | -3,302 |
| Bone Spring | 7,969 | -5,404 |
| Wolfcamp | 10,609 | -8,044 |
| Castile | — | |
| Delaware | — | |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
Waler State Unit 442-389-37849
0.2 KM · Diamondback E&P LLC · Section with this well →
| Bell Canyon | 5,010 | -2,445 |
| Cherry Canyon | 5,875 | -3,310 |
| Bone Spring | 7,993 | -5,428 |
| Permian (undifferentiated) | 10,594 | -8,029 |
| Delaware | — | |
| Delaware | — | |
| Pennsylvanian | — | |
| Castile | — |
10 TOPS · FIRST 8
Smoke Wagon State 16B42-389-41794
0.4 KM · Blue Arrow Operating, LLC · Section with this well →
| Lamar | 4,982 | -2,421 |
| Bell Canyon | 5,015 | -2,454 |
| Cherry Canyon | 5,894 | -3,333 |
| Brushy Canyon | 7,108 | -4,547 |
| Bone Spring | 9,019 | -6,458 |
| Bone Spring | 9,170 | -6,609 |
| Delaware | — | |
| Castile | — |
10 TOPS · FIRST 8
Smoke Wagon State 16A42-389-41793
0.4 KM · Blue Arrow Operating, LLC · Section with this well →
| Lamar | 4,957 | -2,396 |
| Bell Canyon | 4,994 | -2,433 |
| Cherry Canyon | 5,869 | -3,308 |
| Brushy Canyon | 7,095 | -4,534 |
| Bone Spring | 8,987 | -6,426 |
| Bone Spring | 9,154 | -6,593 |
| Delaware | — | |
| Castile | — |
10 TOPS · FIRST 8
Warlander42-389-35804
0.6 KM · Diamondback E&P LLC · Section with this well →
| Delaware | 4,995 | -2,403 |
| Bone Spring | 5,130 | -2,538 |
| Wolfcamp | 10,582 | -7,990 |
| Bell Canyon | — | |
| Castile | — | |
| Delaware | — | |
| Permian (undifferentiated) | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
Warlander42-389-37717
0.7 KM · Diamondback E&P LLC · Section with this well →
| Bell Canyon | 5,016 | -2,422 |
| Cherry Canyon | 5,872 | -3,278 |
| Bone Spring | 7,957 | -5,363 |
| Wolfcamp | 10,592 | -7,998 |
| Castile | — | |
| Delaware | — | |
| Pennsylvanian | — | |
| Delaware | — |
10 TOPS · FIRST 8
Warlander42-389-37718
0.7 KM · Diamondback E&P LLC · Section with this well →
| Bell Canyon | 5,028 | -2,434 |
| Cherry Canyon | 5,888 | -3,294 |
| Bone Spring | 7,975 | -5,381 |
| Permian (undifferentiated) | — | |
| Wolfcamp | — | |
| Castile | — | |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
MA Deuce State 16B42-389-41791
0.8 KM · Blue Arrow Operating, LLC · Section with this well →
| Lamar | 4,970 | -2,399 |
| Bell Canyon | 5,001 | -2,430 |
| Cherry Canyon | 5,852 | -3,281 |
| Brushy Canyon | 7,090 | -4,519 |
| Bone Spring | 8,976 | -6,405 |
| Bone Spring | 9,168 | -6,597 |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
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/38935573, documented in the API reference.