WELL · 42-235-35137 · DISTRICT 7
University Unit 5-20-21 #3H
Irion County · Lin (Wolfcamp) field · Producing · Horizontal
University Unit 5-20-21 #3H (API 42-235-35137) is a horizontal well in Irion County operated by Diamondback E&P LLC, completed November 15, 2013 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued August 23, 2012, permitted to 12,000 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 3 formation tops, including Spraberry, Dean, Lin (Wolfcamp).
Its lease has reported 1.08M barrels of oil and 13.6M mcf of gas since March 2013, last reporting in July 2026. The lease carries 9 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.
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 | Endeavor Energy Resources L.P.Aug 23, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 2
- permits on file
- Aug 23, 2012
- last permit issued
- Nov 15, 2013
- completed
- 1.08M
- cumulative oil, bbl
- 13.6M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2013 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 15, 2013
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: 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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University Unit '5-20-21' O-9-18281 | Lin (Wolfcamp) | Diamondback E&P LLC | 9 | 1.08M | 13.6M | Mar 2013 – Jul 2026 |
Gas, mcf lease total
Last 12 months 678,571 · prior 12 784,488(-14%)
Oil, barrels lease total
Last 12 months 12,474 · prior 12 16,629(-25%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Endeavor Energy Resources L.P.Mar 2013 → Dec 2024
- 2Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 746420-98 | Drill | Endeavor Energy Resources L.P. | May 16, 2013 | Aug 23, 2012 | Jun 13, 2013 | 12,000 |
| 746420-99 | Drill | Endeavor Energy Resources L.P. | Aug 14, 2012 | Aug 23, 2012 | Jun 13, 2013 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-18281 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,655 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,580 | 14,703 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 829 | 12.25 | 403 S |
| 5.5 | 14,760 | 8.75 | 2,583 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 | Jun 10, 2014 | Feb 19, 2014 | 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 42-235-35137 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-235-35137 → 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/23535137, documented in the API reference.