WELL · 42-003-46315 · DISTRICT 8
UL Mason Unit #2H
Andrews County · Spraberry (Trend Area) field · Producing · Horizontal
UL Mason Unit #2H (API 42-003-46315) is a horizontal well in Andrews County operated by Diamondback E&P LLC, completed March 12, 2021 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 25, 2014, permitted to 9,454 ft.
Completion filings report 10 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its lease has reported 1.37M barrels of oil and 1.91M mcf of gas since May 2014, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
- 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 | Diamondback E&P LLCJun 25, 2014 |
- 9,454
- total depth, ft
- 1
- permits on file
- Jun 25, 2014
- last permit issued
- Mar 12, 2021
- completed
- 1.37M
- cumulative oil, bbl
- 1.91M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2014 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 12, 2021
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| UL Mason Unit O-10-45925 | Spraberry (Trend Area) | Diamondback E&P LLC | 4 | 1.37M | 1.91M | May 2014 – Jul 2026 |
Oil, barrels lease total
Last 12 months 33,495 · prior 12 43,454(-23%)
Gas, mcf lease total
Last 12 months 97,755 · prior 12 112,063(-13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Diamondback E&P LLCMay 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 786723-99 | Drill | Diamondback E&P LLC | May 9, 2014 | Jun 25, 2014 | Aug 6, 2014 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 12, 2021 | UL Mason Unit O-10-45925 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 9,454 |
Formation tops
As filed on W-2/G-1. Subsea from 2,943 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 3,064 | -121 |
| Seven Rivers | 3,275 | -332 |
| Queen | 3,904 | -961 |
| Grayburg | 4,227 | -1,284 |
| San AndresSAN ANDRES - CO2 FLOOD, HIGH FLO | 4,599 | -1,656 |
| Holt | 5,308 | -2,365 |
| Glorieta | 5,488 | -2,545 |
| Clear ForkCLEARFORK | 6,598 | -3,655 |
| Permian (undifferentiated)PERMIAN DETRITAL | — | — |
| Tubb | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,650 | 17,211 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,789 | 17.5 | 2,150 S |
| 9.625 | 8,809 | 12.25 | 850 S |
| 5.5 | 17,356 | 8.5 | 2,510 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 | May 14, 2021 | Apr 29, 2021 | — |
| 00 | Jun 17, 2015 | Mar 10, 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 42-003-46315 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-46315 → 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/00346315, documented in the API reference.