42-003-36848

Final Completion

UNIVERSITY 1801

ANDREWS County · District 8 · MONTARE OPERATING LTD. · SHAFTER LAKE N. (SAN ANDRES)

Permits

Max Depth

4,850 ft

First Permit

1990-11-14

Latest Activity

2011-05-16

Lifespan

21 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1991-01-15

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: MONTARE OPERATING LTD. ≠ Permit: SANDRIDGE EXPL. AND PROD., LLC

Resolved via: production → MONTARE OPERATING, LTD.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MATADOR DRILLING CORP. 1993-1995→ MDC OPERATING, INC. 1995-2000→ BYRD OPERATING COMPANY 2001-2010→ OK ARENA OPERATING COMPANY 2010-2010→ SANDRIDGE EXPL. AND PROD., LLC 2010-2018→ AVALON TX OPERATING, LLC 2018-2021→ MONTARE OPERATING, LTD. 2021-2026

Lease Production

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

Formation Tops (4) Elevation 3,188 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	2,950 ft	+238 ft
SEVEN RIVERS	3,070 ft	+118 ft
GRAYBURG	4,505 ft	-1,317 ft
SAN ANDRES	4,580 ft	-1,392 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 (1)

Interval	Type
4,558–4,578 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	1,673 ft	830 sx
5.5"	4,852 ft	1,050 sx

Permit History (2)

#716224 Field Transfer Final Completion

UNIVERSITY · 4,850 ft

2011-05-16

#380840 Drill Final Completion

UNIVERSITY · 4,850 ft

1990-11-14

Spud 1990-12-14

Applications (2)

#716224 A SANDRIDGE EXPL. AND PROD., LLC

received 2011-05-12

#380840 A MATADOR DRILLING CORP.

received 1990-11-09

Records & Logs

5 completion filings on record · 3 with log images at RRC.

W-2/G-1 2011-07-19 log on file

W-2/G-1 2014-01-03

W-2/G-1 2011-07-19 log on file

W-2/G-1 1991-01-23 log on file

W-2/G-1 1991-02-01

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: 1801
Max Depth: 4,850 ft
Drill Type: Vertical
County: ANDREWS
District: 8
Operator: MONTARE OPERATING LTD.
Completed: 1991-01-15

Operator

Name: MONTARE OPER, LTD
Location: FLOWER MOUN
P-5 Status: X (filed 2026-04-17)
Cum Oil (all leases): 3,801,494 bbl
Cum Gas (all leases): 5,957,102 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 18