WELL · 42-003-48231 · DISTRICT 8
UL 2539 W8 #12LM
Andrews County · Spraberry (Trend Area) field · Producing · Horizontal
UL 2539 W8 #12LM (API 42-003-48231) is a horizontal well in Andrews County operated by Diamondback E&P LLC, completed May 21, 2021 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued February 3, 2020, permitted to 9,300 ft.
Completion filings report 10 formation tops, including Seven Rivers, Queen, Grayburg, San Andres.
Its lease has reported 356K barrels of oil and 1.51M mcf of gas since December 2020, last reporting in July 2026.
Operator of record
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,231 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 | Diamondback E&P LLCFeb 3, 2020 |
- 9,300
- total depth, ft
- 2
- permits on file
- Feb 3, 2020
- last permit issued
- May 21, 2021
- completed
- 356K
- cumulative oil, bbl
- 1.51M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2020 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 21, 2021
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
32.383739, -102.215650
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Andrews 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 |
|---|---|---|---|---|---|---|
| UL 2539 W8 O-10-55555 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 356K | 1.51M | Dec 2020 – Jul 2026 |
Gas, mcf lease total
Last 12 months 366,545 · prior 12 240,551(+52%)
Oil, barrels lease total
Last 12 months 6,723 · prior 12 8,538(-21%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1QEP Energy CompanyMay 2021 → Sep 2021
- 2Diamondback E&P LLCOct 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 861392-98 | Drill | Diamondback E&P LLC | Oct 7, 2021 | Feb 3, 2020 | Mar 29, 2020 | 9,300 |
| 861392-99 | Drill | QEP Energy Company | Jan 28, 2020 | Feb 3, 2020 | Mar 29, 2020 | 9,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-55555 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,938 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Seven Rivers | 3,300 | -362 |
| Queen | 3,830 | -892 |
| Grayburg | 4,163 | -1,225 |
| San AndresSAN ANDRES - CO2 FLOOD, HIGH FLO | 4,429 | -1,491 |
| Glorieta | 5,563 | -2,625 |
| Clear ForkCLEARFORK | 6,649 | -3,711 |
| Clear ForkCLEARFORK | — | — |
| Glorieta | — | — |
| Grayburg | — | — |
| Holt | — | — |
| Permian (undifferentiated)PERMIAN DETRITAL | — | — |
| Queen | — | — |
| San AndresSAN ANDRES - CO2 FLOOD, HIGH FLO | — | — |
| Seven Rivers | — | — |
| Tubb | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,253 | 21,999 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 1,835 | 14.75 | 900 S |
| 8.625 | 5,816 | 11 | 1,195 S |
| 5.5 | 22,083 | 7.875 | 2,245 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, 2021 | Aug 31, 2021 | Yes |
| 00 | Mar 31, 2021 | Mar 2, 2021 | — |
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 42-003-48231 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-48231 → 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.
UL 2539 W942-003-48232
0.0 KM · QEP Energy Company · Section with this well →
| Glorieta | 5,542 | -2,604 |
| Clear Fork | 6,655 | -3,717 |
| Yates | — | |
| Grayburg | — | |
| Holt | — | |
| Permian (undifferentiated) | — | |
| Queen | — | |
| San Andres | — |
10 TOPS · FIRST 8
UL 2539 W1042-003-48233
0.0 KM · QEP Energy Company · Section with this well →
| Yates | 3,084 | -146 |
| Seven Rivers | 3,297 | -359 |
| Queen | 3,828 | -890 |
| Grayburg | 4,158 | -1,220 |
| San Andres | 4,423 | -1,485 |
| Glorieta | 5,563 | -2,625 |
| Clear Fork | 6,636 | -3,698 |
| Tubb | — |
10 TOPS · FIRST 8
UL 2539 W1142-003-48234
0.0 KM · QEP Energy Company · Section with this well →
| Grayburg | 4,158 | -1,220 |
| San Andres | 4,423 | -1,485 |
| Glorieta | 5,552 | -2,614 |
| Clear Fork | 6,641 | -3,703 |
| Spraberry | 8,344 | -5,406 |
| Jo Mill | 8,877 | -5,939 |
| Tubb | — | |
| Queen | — |
14 TOPS · FIRST 8
UL 2539 W1242-003-48235
0.0 KM · QEP Energy Company · Section with this well →
| Glorieta | 5,549 | -2,611 |
| Clear Fork | 6,633 | -3,695 |
| Jo Mill | 8,878 | -5,940 |
| Grayburg | — | |
| San Andres | — | |
| Queen | — | |
| Permian (undifferentiated) | — | |
| Holt | — |
11 TOPS · FIRST 8
UL 2539 W1342-003-48236
0.0 KM · QEP Energy Company · Section with this well →
| San Andres | 4,438 | -1,500 |
| Glorieta | 5,569 | -2,631 |
| Clear Fork | 6,643 | -3,705 |
| Jo Mill | 8,896 | -5,958 |
| Yates | — | |
| Grayburg | — | |
| Holt | — | |
| Permian (undifferentiated) | — |
11 TOPS · FIRST 8
UL 2539 W1442-003-48237
0.0 KM · QEP Energy Company · Section with this well →
| Glorieta | 5,564 | -2,626 |
| Clear Fork | 6,635 | -3,697 |
| Tubb | — | |
| Holt | — | |
| Grayburg | — | |
| Permian (undifferentiated) | — | |
| Queen | — | |
| San Andres | — |
10 TOPS · FIRST 8
UL 2539 E1642-003-48223
0.1 KM · QEP Energy Company · Section with this well →
| Yates | 3,097 | -160 |
| Seven Rivers | 3,394 | -457 |
| Queen | 4,071 | -1,134 |
| Grayburg | 4,679 | -1,742 |
| San Andres | 4,853 | -1,916 |
| Glorieta | 5,531 | -2,594 |
| Clear Fork | 6,646 | -3,709 |
| Tubb | 7,076 | -4,139 |
10 TOPS · FIRST 8
UL 1125 W242-003-48130
0.2 KM · QEP Energy Company · Section with this well →
| Yates | 3,080 | -141 |
| Seven Rivers | 3,386 | -447 |
| Queen | 4,061 | -1,122 |
| Grayburg | 4,658 | -1,719 |
| San Andres | 4,830 | -1,891 |
| Glorieta | 5,539 | -2,600 |
| Clear Fork | 6,632 | -3,693 |
| Tubb | 7,073 | -4,134 |
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/00348231, documented in the API reference.