WELL · 42-317-40539 · DISTRICT 8
Nail Ranch 1-12SL Unit 2 #8LA
Martin County · Spraberry (Trend Area) field · Shut IN · Horizontal
Nail Ranch 1-12sl Unit 2 #8LA (API 42-317-40539) is a horizontal well in Martin County operated by Diamondback E&P LLC, completed May 12, 2017 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued September 2, 2016, permitted to 12,500 ft.
It was permitted by Endeavor Energy Resources L.P. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Queen, Grayburg.
Its lease has reported 1.46M barrels of oil and 2.32M mcf of gas since May 2017, last reporting in July 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Endeavor Energy Resources L.P.; the EWA schedule now lists a different operator.
- 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 | Endeavor Energy Resources L.P.Sep 2, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,500
- total depth, ft
- 2
- permits on file
- Sep 2, 2016
- last permit issued
- May 12, 2017
- completed
- 1.46M
- cumulative oil, bbl
- 2.32M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 12, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (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; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Nail Ranch 1-12SL Unit 2 O-10-48880 | Spraberry (Trend Area) | Diamondback E&P LLC | 3 | 1.46M | 2.32M | May 2017 – Jul 2026 |
Oil, barrels lease total
Last 12 months 32,057 · prior 12 53,078(-40%)
Gas, mcf lease total
Last 12 months 144,110 · prior 12 188,066(-23%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Endeavor Energy Resources L.P.May 2017 → Dec 2024
- 2Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 818103-98 | Drill | Endeavor Energy Resources L.P. | Oct 24, 2016 | Sep 2, 2016 | Oct 15, 2016 | 12,500 |
| 818103-99 | Drill | Endeavor Energy Resources L.P. | Aug 29, 2016 | Sep 2, 2016 | Oct 15, 2016 | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-48880 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,769 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,000 | 1,769 |
| Yates | 2,200 | 569 |
| Queen | 4,100 | -1,331 |
| Grayburg | 4,200 | -1,431 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,280 | -1,511 |
| Cisco | 5,550 | -2,781 |
| Spraberry | 8,129 | -5,360 |
| Dean | 8,930 | -6,161 |
| Wolfcamp | 9,401 | -6,632 |
| Pennsylvanian | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,930 | 20,161 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,617 | 17.5 | 1,455 S |
| 9.625 | 8,794 | 12.25 | 875 S |
| 5.5 | 20,285 | 8.5 | 3,020 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 | Feb 12, 2019 | Dec 17, 2018 | Yes |
| 00 | Oct 31, 2017 | Jul 13, 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 42-317-40539 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-40539 → 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/31740539, documented in the API reference.