WELL · 42-317-41506 · DISTRICT 8
Arnold #401
Martin County · Spraberry (Trend Area) field · Producing · Horizontal
Arnold #401 (API 42-317-41506) is a horizontal well in Martin County operated by Diamondback E&P LLC, completed April 20, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 11, 2018, permitted to 9,605 ft.
It was permitted by Lario Oil & Gas Company 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 120K barrels of oil and 133K mcf of gas since September 2018, last reporting in July 2026.
Operator of record
Permitted by Lario Oil & Gas Company; 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 | Lario Oil & Gas CompanyJun 11, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,605
- total depth, ft
- 1
- permits on file
- Jun 11, 2018
- last permit issued
- Apr 20, 2023
- completed
- 120K
- cumulative oil, bbl
- 133K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 20, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
32.462777, -101.907564
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Martin 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 |
|---|---|---|---|---|---|---|
| Arnold O-10-51191 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 120K | 133K | Sep 2018 – Jul 2026 |
Oil, barrels lease total
Last 12 months 17,411 · prior 12 6,929(+151%)
Gas, mcf lease total
Last 12 months 22,806 · prior 12 23,679(-4%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Lario Oil & Gas CompanyOct 2018 → Feb 2023
- 2Diamondback E&P LLCMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 841019-99 | Drill | Lario Oil & Gas Company | Jun 8, 2018 | Jun 11, 2018 | Jul 1, 2018 | 9,605 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-51191 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,732 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,008 | 1,724 |
| Yates | 2,420 | 312 |
| Queen | 3,340 | -608 |
| Grayburg | 4,045 | -1,313 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,250 | -1,518 |
| Spraberry | 7,447 | -4,715 |
| Dean | 8,815 | -6,083 |
| Wolfcamp | 9,039 | -6,307 |
| Cisco | — | — |
| Pennsylvanian | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,734 | 19,554 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,682 | 17.5 | 1,315 S |
| 12.25 | 8,840 | 9.625 | 1,300 S |
| 9.625 | 8,840 | 12.25 | 980 S |
| 5.5 | 19,625 | 8.5 | 2,730 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 | Sep 26, 2023 | Aug 16, 2023 | — |
| 00 | Jun 28, 2019 | Mar 12, 2019 | 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 42-317-41506 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-41506 → 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 neighbours, subsea-aligned so they line up regardless of surface terrain.
Shape Shifter Unit 80-8542-317-43007
1.1 KM · Element Petroleum OP III, LLC · Section with this well →
| Santa Rosa | 1,182 | 1,554 |
| Yates | 2,430 | 306 |
| Queen | 3,346 | -610 |
| Grayburg | 3,861 | -1,125 |
| San Andres | 4,134 | -1,398 |
| Clear Fork | 5,851 | -3,115 |
| Spraberry | 7,490 | -4,754 |
| Dean | 8,840 | -6,104 |
11 TOPS · FIRST 8
Shape Shifter Unit 80-8542-317-43139
1.1 KM · Element Petroleum OP III, LLC · Section with this well →
| Santa Rosa | 1,182 | 1,557 |
| Yates | 2,423 | 316 |
| Queen | 3,339 | -600 |
| Grayburg | 3,853 | -1,114 |
| San Andres | 4,126 | -1,387 |
| Clear Fork | 5,842 | -3,103 |
| Spraberry | 7,479 | -4,740 |
| Wolfcamp | 8,791 | -6,052 |
10 TOPS · FIRST 8
Shape Shifter Unit 80-8542-317-42417
1.2 KM · Element Petroleum OP III, LLC · Section with this well →
| Grayburg | 3,880 | -1,144 |
| San Andres | 4,118 | -1,382 |
| Clear Fork | 5,843 | -3,107 |
| Spraberry | 7,488 | -4,752 |
| Dean | 8,849 | -6,113 |
| Wolfcamp | 9,079 | -6,343 |
| Cisco | — | |
| Queen | — |
10 TOPS · FIRST 8
Shape Shifter Unit 80-8542-317-42416
1.2 KM · Element Petroleum OP III, LLC · Section with this well →
| Grayburg | 3,883 | -1,147 |
| San Andres | 4,121 | -1,385 |
| Clear Fork | 5,846 | -3,110 |
| Spraberry | 7,491 | -4,755 |
| Cisco | — | |
| Dean | — | |
| Pennsylvanian | — | |
| Queen | — |
10 TOPS · FIRST 8
Arnold 242-317-42188
1.2 KM · Lario Oil & Gas Company · Section with this well →
| Santa Rosa | 1,008 | 1,711 |
| Yates | 2,339 | 380 |
| Queen | 3,145 | -426 |
| Grayburg | 3,803 | -1,084 |
| San Andres | 3,967 | -1,248 |
| Spraberry | 7,402 | -4,683 |
| Dean | 8,791 | -6,072 |
| Wolfcamp | 9,007 | -6,288 |
10 TOPS · FIRST 8
Arnold 242-317-42187
1.2 KM · Lario Oil & Gas Company · Section with this well →
| Santa Rosa | 1,097 | -850 |
| Yates | 2,343 | -2,096 |
| Queen | 3,149 | -2,902 |
| Grayburg | 3,804 | -3,557 |
| San Andres | 3,971 | -3,724 |
| Spraberry | 7,388 | -7,141 |
| Cisco | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Arnold 242-317-42020
1.2 KM · Lario Oil & Gas Company · Section with this well →
| Santa Rosa | 1,071 | 1,649 |
| Yates | 2,352 | 368 |
| Queen | 3,142 | -422 |
| Grayburg | 3,805 | -1,085 |
| San Andres | 3,965 | -1,245 |
| Spraberry | 7,391 | -4,671 |
| Dean | 8,784 | -6,064 |
| Wolfcamp | 8,994 | -6,274 |
10 TOPS · FIRST 8
Mischievous Badger Unit 80-8542-317-41488
1.3 KM · Element Petroleum OP III, LLC · Section with this well →
| Santa Rosa | 2,000 | 745 |
| Yates | 2,470 | 275 |
| Queen | 3,398 | -653 |
| Grayburg | 3,886 | -1,141 |
| San Andres | 4,142 | -1,397 |
| Spraberry | 7,521 | -4,776 |
| Cisco | 8,500 | -5,755 |
| Dean | 8,860 | -6,115 |
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/31741506, documented in the API reference.