42-103-33090

Final Completion

SAND HILLS TUBB UNIT

CRANE County · District 8 · FORMENTERA OPERATIONS LLC · SAND HILLS (TUBB)

Permits

Max Depth

5,000 ft

First Permit

1983-01-18

Latest Activity

1994-10-10

Lifespan

12 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1983-02-23

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: FORMENTERA OPERATIONS LLC ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.

Resolved via: production → FORMENTERA OPERATIONS 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 2019-2021→ CONTANGO RESOURCES, INC. 2021-2021→ CONTANGO RESOURCES, LLC 2022-2022→ SLANT OPERATING, LLC 2022-2023→ FORMENTERA OPERATIONS LLC 2023-2026

Lease Production

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

Formation Tops (5) Elevation 2,627 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	1,508 ft	+1,119 ft
QUEEN	2,267 ft	+360 ft
GRAYBURG	2,512 ft	+115 ft
JUDKINS	2,753 ft	-126 ft
TUBB	4,256 ft	-1,629 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 (2)

Interval	Type
2,434–2,514 ft	Perforated
4,386–4,742 ft	Perforated

Casing (5)

Size	Set Depth	Cement
8.625"	592 ft	400 sx
8.625"	592 ft	400 sx
2.375"	4,767 ft	—
5.5"	4,900 ft	1,200 sx
5.5"	4,900 ft	1,200 sx

Permit History (2)

#428931 Recompletion Final Completion

LEA, P. J. · 4,290 ft

1994-10-10

Spud 1994-10-10

#183831 Drill Final Completion

SAND HILLS TUBB UNIT · 5,000 ft

1983-01-18

Applications (2)

#428931 A MOBIL PRODUCING TX. & N.M. INC.

received 1994-10-10

#183831 A MOBIL PRODUCING TX. & N.M. INC.

received 1983-01-18

Records & Logs

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

W-2/G-1 1994-11-17 log on file

W-2/G-1 1994-12-28

W-2/G-1 1983-03-04

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: 48
Max Depth: 5,000 ft
Drill Type: Vertical
County: CRANE
District: 8
Operator: FORMENTERA OPERATIONS LLC
Completed: 1983-02-23

Operator

Name: FORMENTERA OPERATIONS LLC
Location: AUSTIN
P-5 Status: X (filed 2026-06-11)
Cum Oil (all leases): 7,170,117 bbl
Cum Gas (all leases): 53,235,974 mcf
Activities: CSGD/P, G/PUR, OPRS/G, OPRS/O
Total Permits: 83