WELL · 42-371-39310 · DISTRICT 8
Zauk 39 #1H
Pecos County · Hoefs T-K (Wolfcamp) field · Producing · Horizontal
Zauk 39 #1H (API 42-371-39310) is a horizontal well in Pecos County operated by Diamondback E&P LLC, completed July 31, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued March 2, 2015, permitted to 16,000 ft.
It was permitted by Brigham Resources Operating, LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Glorieta, Grayburg, O'Brien, Queen.
Its lease has reported 293K barrels of oil and 513K mcf of gas since September 2015, last reporting in July 2026.
Operator of record
Permitted by Brigham Resources Operating, LLC; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,237 permits on file · (855) 247-5920
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 | Brigham Resources Operating, LLCMar 2, 2015 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 16,000
- total depth, ft
- 2
- permits on file
- Mar 2, 2015
- last permit issued
- Jul 31, 2023
- completed
- 293K
- cumulative oil, bbl
- 513K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 31, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 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 39 O-10-47504 | Hoefs T-K (Wolfcamp) | Diamondback E&P LLC | 1 | 293K | 513K | Sep 2015 – Jul 2026 |
Oil, barrels lease total
Last 12 months 11,040 · prior 12 13,096(-16%)
Gas, mcf lease total
Last 12 months 43,820 · prior 12 50,009(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Brigham Resources Operating, LLCSep 2015 → Feb 2017
- 2Diamondback E&P LLCMar 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 804181-98 | Drill | Brigham Resources Operating, LLC | Apr 18, 2016 | Mar 2, 2015 | Mar 22, 2015 | 16,000 |
| 804181-99 | Drill | Brigham Resources Operating, LLC | Feb 26, 2015 | Mar 2, 2015 | Mar 22, 2015 | 16,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-47504 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,814 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,775 | 15,370 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,359 | 12.25 | 1,116 S |
| 7 | 10,905 | 8.75 | 650 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 | Apr 1, 2024 | Jan 9, 2024 | — |
| 00 | Apr 26, 2016 | Mar 1, 2016 | 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 42-371-39310 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-39310 → 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.
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/37139310, documented in the API reference.