WELL · 42-495-33391 · DISTRICT 8

University 4-21 #1

N

Winkler County · Phantom (Wolfcamp) field  · Horizontal

University 4-21 #1 (API 42-495-33391) is a horizontal well in Winkler County operated by Wpx Energy Permian LLC, completed November 3, 2012.

The RRC has issued 2 drilling permits (amended once) between 2011 and 2014, permitted to 13,500 ft.

It was permitted by Energen Resources Corporation and has since transferred to Wpx Energy Permian LLC on the wellbore schedule.

Completion filings report 14 formation tops, including Rustler, Yates, Queen, Colby-Queen.

Its lease has reported 284K barrels of oil and 300K mcf of gas since November 2012, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.

Operator of record

WPX Energy Permian LLC

Permitted by Energen Resources Corporation; the EWA schedule now lists a different operator.

Oklahoma City, OK · P-5 Y, filed Sep 4, 2025 · 956 permits on file · (800) 465-8314

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleWPX Energy Permian LLC
Production reportsWPX Energy Permian, LLCthrough Feb 2023
Latest permitEnergen Resources CorporationJun 12, 2014

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

13,500
total depth, ft
3
permits on file
Jun 12, 2014
last permit issued
Nov 3, 2012
completed
284K
cumulative oil, bbl
300K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Nov 2012 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Nov 3, 2012
Shut in
—
Plugged
—

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 2 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
University 4-21 O-10-44762Phantom (Wolfcamp)WPX Energy Permian, LLC2284K300KNov 2012 – Jul 2026

No volumes reported on these leases in the last three years.

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Energen Resources CorporationNov 2012 → May 2016
  2. 2Felix Energy Holdings II, LLCJun 2016 → Apr 2020
  3. 3WPX Energy Permian, LLCMay 2020 → Feb 2023

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
786556-99RecompletionEnergen Resources CorporationMay 8, 2014Jun 12, 2014Dec 18, 201413,500
726657-98DrillEnergen Resources CorporationJun 12, 2012Oct 24, 2011Jun 25, 201212,500
726657-99DrillEnergen Resources CorporationOct 20, 2011Oct 24, 2011—11,500

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-10-44762————
—— O-10-44762————

Formation tops

As filed on W-2/G-1. Subsea from 2,858 ft elevation.Download CSV →

FormationMD ftSubsea
Rustler7252,133
RustlerRUSTLER - POSSIBLE FLOW; POSSIBL7252,133
Yates2,280578
QueenQUEEN-SEVEN RIVERS2,700158
Colby-Queen2,900-42
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO3,600-742
Delaware4,300-1,442
Holt4,500-1,642
Clear ForkCLEARFORK4,750-1,892
Glorieta4,900-2,042
Cherry Canyon6,000-3,142
Wichita-AlbanyWICHITA ALBANY6,600-3,742
Bone SpringBONE SPRINGS8,848-5,990
Bone Spring3RD BONE SPRING11,745-8,887
A Sand11,887-9,029
WolfcampWOLFCAMP MARKER11,950-9,092

Perforations

Perforated and open-hole intervals.

FromToType
12,37616,620Perforated
13,02916,389Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3751,23717.51,050 S
9.62510,49312.251,350 S
716,4878.751,550 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Apr 24, 2019Jan 5, 2019—
00Aug 18, 2015May 26, 2015—
00Feb 23, 2015Jan 6, 2015Yes
00Jul 22, 2014Aug 8, 2013Yes

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.

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/49533391, documented in the API reference.