42-103-32532

Final Completion

SAND HILLS JUDKINS UNIT

CRANE County · District 8 · VANGUARD OPERATING LLC · SAND HILLS (JUDKINS)

Permits

Max Depth

3,300 ft

First Permit

1981-04-02

Latest Activity

2005-03-21

Lifespan

24 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1981-09-01

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: VANGUARD OPERATING LLC ≠ Production: SLANT OPERATING, LLC (reported 2022-11)

EWA / Permit operator mismatch

Scheduling: VANGUARD OPERATING LLC ≠ Permit: ENCORE OPERATING, L.P.

Resolved via: scheduling → VANGUARD OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-1996→ TITAN RESOURCES I, INC. 1996-2000→ PURE RESOURCES, L.P. 2000-2002→ HOME-STAKE OIL & GAS COMPANY 2002-2002→ CORTEZ OPERATING COMPANY 2002-2004→ ENCORE OPERATING, L.P. 2004-2009→ ENCORE ENERGY PARTNERS OPER LLC 2009-2012→ VANGUARD PERMIAN, LLC 2012-2015→ VANGUARD OPERATING, LLC 2015-2019→ GRIZZLY OP OF DELAWARE, LLC 2019-2020→ CONTANGO RESOURCES, INC. 2021-2021→ CONTANGO RESOURCES, LLC 2022-2022→ SLANT OPERATING, LLC 2022-2022

Lease Production

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

Formation Tops (2) Elevation 2,605 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SAN ANDRES	2,925 ft	-320 ft
JUDKIN	3,050 ft	-445 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 (3)

Interval	Type
2,536–2,732 ft	Perforated
2,908–3,103 ft	Perforated
2,996–3,103 ft	Perforated

Casing (4)

Size	Set Depth	Cement
8.625"	675 ft	475 sx
2.375"	3,087 ft	—
2.375"	3,095 ft	—
5.5"	3,150 ft	500 sx

Permit History (2)

#559143 Recompletion Final Completion

SAND HILLS JUDKINS UNIT · 3,150 ft

2005-03-21

Spud 2005-03-08

#119150 Drill Final Completion

SAND HILLS JUDKINS UNIT · 3,300 ft

1981-04-02

Applications (2)

#559143 A ENCORE OPERATING, L.P.

received 2005-03-16

#119150 A MOBIL PRODUCING TX. & N.M. INC.

received 1981-04-02

Records & Logs

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

W-2/G-1 2005-06-16 log on file

W-2/G-1 2005-06-27

W-2/G-1 1983-01-27

W-2/G-1 1982-03-05

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 CRANE County.

Well Details

Well Number: 11
Max Depth: 3,300 ft
Drill Type: Vertical
County: CRANE
District: 8
Operator: VANGUARD OPERATING LLC
Completed: 1981-09-01

Operator

Name: VANGUARD OPER, LLC
Location: HOUSTON
P-5 Status: Inactive (filed 2018-09-28)
Cum Oil (all leases): 2,952,418 bbl
Cum Gas (all leases): 26,103,904 mcf
Total Permits: 4