WELL · 42-371-40393 · DISTRICT 8
Zauk State 37-39 A #1TB
Pecos County · Hoefs T-K (Wolfcamp) field · Producing · Horizontal
Zauk State 37-39 A #1TB (API 42-371-40393) is a horizontal well in Pecos County operated by Diamondback E&P LLC, completed October 3, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued June 10, 2022, permitted to 10,089 ft.
Completion filings report 13 formation tops, including Lamar, Cherry Canyon, Avalon, Capitan.
Its lease has reported 340K barrels of oil and 386K mcf of gas since June 2023, last reporting in July 2026.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,237
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Diamondback E&P LLCJun 10, 2022 |
- 10,089
- total depth, ft
- 2
- permits on file
- Jun 10, 2022
- last permit issued
- Oct 3, 2023
- completed
- 340K
- cumulative oil, bbl
- 386K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 3, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
Surface location
31.095133, -103.169283
Permit surface location from the RRC GIS record, in Pecos County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Zauk State 37-39 A O-10-60113 | Hoefs T-K (Wolfcamp) | Diamondback E&P LLC | 1 | 340K | 386K | Jun 2023 – Jul 2026 |
Oil, barrels lease total
Last 12 months 79,736 · prior 12 126,132(-37%)
Gas, mcf lease total
Last 12 months 130,147 · prior 12 140,768(-8%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Diamondback E&P LLCOct 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 880848-98 | Drill | Diamondback E&P LLC | Nov 8, 2023 | Jun 10, 2022 | Jan 7, 2023 | 10,089 |
| 880848-99 | Drill | Diamondback E&P LLC | Jun 6, 2022 | Jun 10, 2022 | Jan 7, 2023 | 9,825 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-60113 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,803 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lamar | 5,375 | -2,572 |
| Cherry Canyon | 6,045 | -3,242 |
| Avalon | 8,028 | -5,225 |
| CapitanCAPITAN REEF - HIGH FLOWS | — | — |
| Grayburg | — | — |
| O'Brien | — | — |
| Queen | — | — |
| Rustler | — | — |
| San AndresSAN ANDRES - USABLE QUALITY WATE | — | — |
| Seven Rivers | — | — |
| Soma | — | — |
| Toborg | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,225 | 25,662 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 1,556 | 14.75 | 1,050 S |
| 7.625 | 9,516 | 8.75 | 325 S |
| 5.5 | 25,748 | 6.75 | 1,975 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 | Mar 19, 2024 | Jan 4, 2024 | Yes |
| 00 | Jan 26, 2024 | Nov 1, 2023 | 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 42-371-40393 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-40393 → 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 neighbors, subsea-aligned so they line up regardless of surface terrain.
Zauk State 37-39 B42-371-40394
0.0 KM · Diamondback E&P LLC · Section with this well →
| Grayburg | — | |
| Queen | — | |
| O'Brien | — | |
| Capitan | — | |
| Yates | — | |
| Toborg | — | |
| Soma | — | |
| Seven Rivers | — |
10 TOPS · FIRST 8
Zauk State 37-39 C42-371-40395
0.0 KM · Diamondback E&P LLC · Section with this well →
| Lamar | 5,363 | -2,560 |
| Cherry Canyon | 6,028 | -3,225 |
| Avalon | 8,024 | -5,221 |
| Grayburg | — | |
| Queen | — | |
| Rustler | — | |
| Seven Rivers | — | |
| Soma | — |
10 TOPS · FIRST 8
Zauk State 37-39 D42-371-40396
0.0 KM · Diamondback E&P LLC · Section with this well →
| Lamar | 5,356 | -2,553 |
| Cherry Canyon | 6,021 | -3,218 |
| Avalon | 8,033 | -5,230 |
| Toborg | — | |
| Soma | — | |
| Seven Rivers | — | |
| San Andres | — | |
| Rustler | — |
13 TOPS · FIRST 8
Zauk State 37-39 E42-371-40445
0.0 KM · Diamondback E&P LLC · Section with this well →
| Grayburg | — | |
| Toborg | — | |
| Capitan | — | |
| Yates | — | |
| Seven Rivers | — | |
| San Andres | — | |
| Rustler | — | |
| Queen | — |
10 TOPS · FIRST 8
Page Royalty State 31-32 B42-371-39811
2.0 KM · Diamondback E&P LLC · Section with this well →
| Grayburg | — | |
| Glorieta | — | |
| O'Brien | — | |
| Queen | — | |
| Rustler | — | |
| Seven Rivers | — | |
| Soma | — | |
| Toborg | — |
10 TOPS · FIRST 8
Page Royalty State 31-32 A42-371-39810
2.0 KM · Diamondback E&P LLC · Section with this well →
| Glorieta | — | |
| Grayburg | — | |
| O'Brien | — | |
| Queen | — | |
| Rustler | — | |
| Seven Rivers | — | |
| Soma | — | |
| Toborg | — |
10 TOPS · FIRST 8
Tytex 41-42 Unit42-371-40399
3.2 KM · Diamondback E&P LLC · Section with this well →
| O'Brien | — | |
| Capitan | — | |
| Grayburg | — | |
| Queen | — | |
| Rustler | — | |
| San Andres | — | |
| Seven Rivers | — | |
| Soma | — |
10 TOPS · FIRST 8
Tytex 41-42 Unit42-371-40398
3.2 KM · Diamondback E&P LLC · Section with this well →
| Delaware | 5,362 | -2,566 |
| Cherry Canyon | 6,038 | -3,242 |
| Bone Spring | 7,930 | -5,134 |
| Bone Spring | 8,148 | -5,352 |
| Bone Spring | 8,893 | -6,097 |
| Toborg | — | |
| Yates | — | |
| Rustler | — |
15 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/37140393, documented in the API reference.