WELL · 42-371-40445 · DISTRICT 8
Zauk State 37-39 E #5TB
Pecos County · Hoefs T-K (Wolfcamp) field · Producing · Horizontal
Zauk State 37-39 E #5TB (API 42-371-40445) is a horizontal well in Pecos County operated by Diamondback E&P LLC, completed September 29, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued January 9, 2023, permitted to 10,080 ft.
Completion filings report 10 formation tops, including Capitan, Grayburg, O'Brien, Queen.
Its lease has reported 361K barrels of oil and 524K 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 LLCJan 9, 2023 |
- 10,080
- total depth, ft
- 2
- permits on file
- Jan 9, 2023
- last permit issued
- Sep 29, 2023
- completed
- 361K
- cumulative oil, bbl
- 524K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 29, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
Surface location
31.095380, -103.169290
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 E O-10-60101 | Hoefs T-K (Wolfcamp) | Diamondback E&P LLC | 1 | 361K | 524K | Jun 2023 – Jul 2026 |
Oil, barrels lease total
Last 12 months 78,022 · prior 12 138,164(-44%)
Gas, mcf lease total
Last 12 months 119,639 · prior 12 245,625(-51%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Diamondback E&P LLCSep 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 887113-98 | Drill | Diamondback E&P LLC | Nov 8, 2023 | Jan 9, 2023 | Jan 10, 2023 | 10,080 |
| 887113-99 | Drill | Diamondback E&P LLC | Jan 9, 2023 | Jan 9, 2023 | Jan 10, 2023 | 9,825 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-60101 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,804 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| 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 |
|---|---|---|
| 10,166 | 25,605 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 1,572 | 14.75 | 1,050 S |
| 7.625 | 9,437 | 8.75 | 325 S |
| 5.5 | 25,696 | 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 22, 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 42-371-40445 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-40445 → 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 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 |
| Capitan | — | |
| Rustler | — | |
| Queen | — | |
| O'Brien | — | |
| Soma | — |
13 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 |
| Seven Rivers | — | |
| Toborg | — | |
| Yates | — | |
| Grayburg | — | |
| Queen | — |
10 TOPS · FIRST 8
Zauk State 37-39 A42-371-40393
0.0 KM · Diamondback E&P LLC · Section with this well →
| Lamar | 5,375 | -2,572 |
| Cherry Canyon | 6,045 | -3,242 |
| Avalon | 8,028 | -5,225 |
| San Andres | — | |
| Capitan | — | |
| Grayburg | — | |
| O'Brien | — | |
| Queen | — |
13 TOPS · FIRST 8
Zauk State 37-39 B42-371-40394
0.0 KM · Diamondback E&P LLC · Section with this well →
| Queen | — | |
| Rustler | — | |
| San Andres | — | |
| Seven Rivers | — | |
| Soma | — | |
| Toborg | — | |
| Yates | — | |
| O'Brien | — |
10 TOPS · FIRST 8
Page Royalty State 31-32 B42-371-39811
1.9 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
1.9 KM · Diamondback E&P LLC · Section with this well →
| Yates | — | |
| Tubb | — | |
| Glorieta | — | |
| Toborg | — | |
| Soma | — | |
| Seven Rivers | — | |
| Rustler | — | |
| Queen | — |
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 |
| O'Brien | — | |
| Capitan | — | |
| Grayburg | — |
15 TOPS · FIRST 8
Tytex 41-42 Unit42-371-40399
3.2 KM · Diamondback E&P LLC · Section with this well →
| Capitan | — | |
| Grayburg | — | |
| O'Brien | — | |
| Queen | — | |
| Rustler | — | |
| San Andres | — | |
| Seven Rivers | — | |
| Soma | — |
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/37140445, documented in the API reference.