42-003-05275

Final Completion

UNIVERSITY D

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

Permits

Max Depth

11,140 ft

First Permit

1980-05-22

Latest Activity

1985-08-23

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1985-10-05

Shut-In

—

Plugged

1993-05-18

EWA / Production operator mismatch

Scheduling: WINN OPERATING LLC ≠ Production: MAMMOTH EXPLORATION LLC (reported 2020-02)

EWA / Permit operator mismatch

Scheduling: WINN OPERATING LLC ≠ Permit: SHELL WESTERN E&P INC.

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 2020-2020

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 (5) Elevation 3,118 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
WOLFCAMP	8,450 ft	-5,332 ft
PENN (Pennsylvanian)	8,733 ft	-5,615 ft
PENNSYLVANIAN	8,733 ft	-5,615 ft
MISSISSIPPIAN	10,345 ft	-7,227 ft
DEVONIAN	10,836 ft	-7,718 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (5)

Interval	Type
8,462–10,988 ft	Perforated
8,464–8,538 ft	Perforated
10,400–10,402 ft	Perforated
10,874–10,988 ft	Perforated
?–10,916 ft	Perforated

Casing (5)

Size	Set Depth	Cement
13.375"	451 ft	500 sx
9.625"	4,697 ft	1,300 sx
2.875"	10,044 ft	—
7.625"	11,135 ft	750 sx
7"	11,135 ft	750 sx

Permit History (2)

#283466 Recompletion Final Completion

UNIVERSITY -D- · 11,140 ft

1985-08-23

#83733 Other Final Completion

UNIVERSITY -D- · 11,140 ft

1980-05-22

Spud 1979-11-06

Applications (2)

#283466 A SHELL WESTERN E&P INC.

received 1985-08-22

#83733 A SHELL OIL COMPANY

received 1980-05-22

Records & Logs

6 completion filings on record · 2 with log images at RRC.

W-2/G-1 1985-12-13 log on file

W-2/G-1 1985-03-07

W-2/G-1 1985-12-13 log on file

W-2/G-1 1985-03-13

W-2/G-1 1960-08-12

W-2/G-1 1984-01-12

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: 3
Max Depth: 11,140 ft
Drill Type: Vertical
County: ANDREWS
District: 8
Operator: WINN OPERATING LLC
Completed: 1985-10-05

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