WELL · 42-317-40177 · DISTRICT 8
Nail Unit 1 #3103BH
Martin County · Spraberry (Trend Area) R 40 Exc field · Producing · Horizontal
Nail Unit 1 #3103BH (API 42-317-40177) is a horizontal well in Martin County operated by Xto Energy Inc., completed October 9, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 9, 2015, permitted to 17,900 ft.
Completion filings report 11 formation tops, including Base Cretaceous (marker), Santa Rosa, Yates, Queen.
Its lease has reported 849K barrels of oil and 1.85M mcf of gas since November 2015, last reporting in July 2026. The lease carries 6 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit.
Operator of record
- Based in
- Spring, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Apr 8, 2026
- Permits on file
- 16,156
- Phone
- (346) 502-1572
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | XTO Energy Inc. |
| Production reports | XTO Energy Inc.through Apr 2026 |
| Latest permit | XTO Energy Inc.Apr 9, 2015 |
- 17,900
- total depth, ft
- 1
- permits on file
- Apr 9, 2015
- last permit issued
- Oct 9, 2017
- completed
- 849K
- cumulative oil, bbl
- 1.85M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 9, 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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Nail Unit 1 O-10-47199 | Spraberry (Trend Area) R 40 Exc | XTO Energy Inc. | 6 | 849K | 1.85M | Nov 2015 – Jul 2026 |
Oil, barrels lease total
Last 12 months 36,382 · prior 12 33,773(+8%)
Gas, mcf lease total
Last 12 months 87,836 · prior 12 99,596(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1XTO Energy Inc.Nov 2015 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 805348-99 | Drill | XTO Energy Inc. | Apr 7, 2015 | Apr 9, 2015 | Jun 16, 2015 | 17,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-47199 | — | — | — | — |
| — | — O-10-47199 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,745 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS/ TOP DOCKUM TRIA | 342 | 2,403 |
| Santa Rosa | 1,205 | 1,540 |
| Yates | 2,894 | -149 |
| Queen | 3,451 | -706 |
| Grayburg | 3,990 | -1,245 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,282 | -1,537 |
| SpraberryUPPER SPRAYBERRY SAND | 7,518 | -4,773 |
| SpraberryUPPER SPRAYBERRY LIME | 7,733 | -4,988 |
| SpraberryLOWER SPRAYBERRY SAND | 8,004 | -5,259 |
| SpraberryLOWER SPRABERRY LIME | 8,426 | -5,681 |
| Dean | 8,811 | -6,066 |
| Wolfcamp | 9,039 | -6,294 |
| WolfcampWOLFCAMP B | 9,339 | -6,594 |
| Cisco | — | — |
| Pennsylvanian | — | — |
| Spraberry | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,826 | 16,727 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,278 | 17.5 | 1,139 S |
| 9.625 | 8,579 | 12.5 | 1,656 S |
| 5.5 | 16,870 | 8.5 | 1,755 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 | Nov 3, 2020 | Oct 20, 2020 | — |
| 00 | Jul 15, 2019 | Apr 18, 2019 | — |
| 00 | Jan 27, 2016 | Dec 30, 2015 | 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 42-317-40177 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-40177 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- Jan 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000119792 | H-1 Injection | Active | 5,000 | 4,638 | 9,276–9,441 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/31740177, documented in the API reference.