42-003-32563

Final Completion

UNIVERSITY -J-

ANDREWS County · District 8 · WINN OPERATING LLC · ANDREWS SOUTH (WOLFCAMP)

Permits

Max Depth

11,300 ft

First Permit

1980-12-29

Latest Activity

1981-09-15

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1981-07-24

Shut-In

—

Plugged

2008-01-10

EWA / Production operator mismatch

Scheduling: WINN OPERATING LLC ≠ Production: MAMMOTH EXPLORATION LLC (reported 2021-07)

EWA / Permit operator mismatch

Scheduling: WINN OPERATING LLC ≠ Permit: SHELL OIL COMPANY

Resolved via: scheduling → WINN OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

CITATION OIL & GAS CORP. 1993-2010→ SABER OIL & GAS VENTURES, LLC 2010-2018→ MAMMOTH EXPLORATION LLC 2018-2021

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil

production & DCA →

Formation Tops

No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. Offset-well tops can't be shown either — this well has no surface coordinates on file yet.

Check this well's filings at RRC ↗

Perforations (1)

Interval	Type
8,720–9,804 ft	Perforated

Casing (5)

Size	Set Depth	Cement
13.375"	470 ft	450 sx
9.625"	1,620 ft	900 sx
9.625"	5,105 ft	2,550 sx
2.875"	9,830 ft	—
7.625"	11,300 ft	575 sx

Permit History (2)

#133229 Recompletion Final Completion

UNIVERSITY -J- · 11,300 ft

1981-09-15

#103338 Drill Final Completion

UNIVERSITY -J- · 11,300 ft

1980-12-29

Spud 1981-01-01

Applications (2)

#133229 A SHELL OIL COMPANY

received 1981-09-15

#103338 A SHELL OIL COMPANY

received 1980-12-29

Records & Logs

1 completion filing on record.

W-2/G-1 1981-10-20

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in ANDREWS County.

Well Details

Well Number: 4
Max Depth: 11,300 ft
Drill Type: Vertical
County: ANDREWS
District: 8
Operator: WINN OPERATING LLC
Completed: 1981-07-24

Operator

Name: WINN OPER, LLC
Location: KILGORE
P-5 Status: Active (filed 2026-01-23)
Cum Oil (all leases): 1,535,482 bbl
Cum Gas (all leases): 178,389 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 1