42-495-30865

Final Completion

UNIVERSITY 21-12

WINKLER County · District 8 · DEVON ENERGY PRODUCTION CO, L.P.

Permits

Max Depth

19,300 ft

First Permit

1977-06-14

Latest Activity

2005-11-22

Lifespan

28 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

2012-02-06

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-12

Last Production

2012-06

Operator History

Chain of Custody

MITCHELL ENERGY CORPORATION 1993-1995→ SABA ENERGY OF TEXAS, INC. 1995-2000→ DEVON ENERGY PRODUCTION CO, L.P. 2006-2011

Lease Production

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

Formation Tops (2) Elevation 2,807 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
M. WOLFCAMP	11,616 ft	-8,809 ft
WOLFCAMP	11,816 ft	-9,009 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
7,855–7,890 ft	Perforated
11,616–11,756 ft	Perforated
11,816–11,820 ft	Perforated
11,821–11,827 ft	Perforated
11,836–11,840 ft	Perforated

Casing (6)

Size	Set Depth	Cement
20"	1,200 ft	—
20"	1,305 ft	2,435 sx
13.375"	2,200 ft	—
13.375"	3,139 ft	5,800 sx
10.75"	11,500 ft	4,563 sx
10.75"	11,500 ft	—

Permit History (4)

#609739 Reenter Final Completion

UNIVERSITY 21-12 · 19,185 ft

2005-11-22

Spud 2005-12-12

#417098 Reenter Final Completion

UNIVERSITY "21-12" · 8,200 ft

1993-11-08

Spud 1993-12-01

#238601 Other Final Completion

MOTHER LODE 21-12 · 19,300 ft

1984-04-30

#713 Drill Plug Dry Hole (P&A)

UNIVERSITY "21-12" · 19,300 ft

1977-06-14

Spud 1977-08-28

Applications (4)

#609739 A DEVON ENERGY PRODUCTION CO, L.P.

received 2005-11-18

#417098 A MITCHELL ENERGY CORPORATION

received 1993-10-14

#238601 A SELECT WELL SERVICING, INC.

received 1984-04-30

#713 A UNION TEXAS PETROLEUM CORP.

received 1977-06-14

Records & Logs

6 completion filings on record · 1 with log images at RRC.

W-2/G-1 2006-02-17 log on file

W-2/G-1 2006-03-08

W-2/G-1 1994-01-04

W-2/G-1 1994-02-02

W-2/G-1 1984-06-14

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 WINKLER County.

Well Details

Well Number: 1A
Max Depth: 19,300 ft
Drill Type: Vertical
County: WINKLER
District: 8
Operator: DEVON ENERGY PRODUCTION CO, L.P.

Operator

Name: PENNZENERGY EXP. & PROD., L.L.C
Location: OKLAHOMA CI, TY
P-5 Status: Active (filed 2025-12-18)
Cum Oil (all leases): 365,943,944 bbl
Cum Gas (all leases): 9,274,880,220 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 9,259