42-211-31716

Final Completion

STUDER

HEMPHILL County · District 10 · SUNDOWN ENERGY LP · CANADIAN SE. (TONKAWA)

Permits

Max Depth

7,870 ft

First Permit

1984-08-28

Latest Activity

2004-04-02

Lifespan

20 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2004-03-11

Shut-In

—

Plugged

2010-05-20

EWA / Permit operator mismatch

Scheduling: SUNDOWN ENERGY LP ≠ Permit: SUNDOWN ENERGY, INC.

Resolved via: scheduling → SUNDOWN ENERGY LP

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2010-05

Operator History

Chain of Custody

BHP PETROLEUM (AMERICAS) INC. 1993-1995→ COENERGY OPERATING COMPANY 1995-1997→ MCNIC OIL & GAS MIDCONTINENT,INC 1997-1999→ SUNDOWN ENERGY, INC. 1999-2004→ SUNDOWN ENERGY LP 2004-2006

Lease Production

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

Formation Tops (5) Elevation 2,476 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
DOUGLAS MARKER (Douglas)	6,965 ft	-4,489 ft
DOUGLAS	7,016 ft	-4,540 ft
DOUGLAS SAND (Douglas)	7,016 ft	-4,540 ft
TONKAWA	7,728 ft	-5,252 ft
TONKAWA SAND (Tonkawa)	7,728 ft	-5,252 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
7,016–7,081 ft	Perforated
7,745–7,757 ft	Perforated

Casing (2)

Size	Set Depth	Cement
9.625"	1,109 ft	350 sx
5.5"	7,870 ft	215 sx

Permit History (2)

#543781 Recompletion Final Completion

STUDER · 7,870 ft

2004-04-02

#249778 Drill Final Completion

STUDER · 7,500 ft

1984-08-28

Spud 1984-10-04

Applications (2)

#543781 A SUNDOWN ENERGY, INC.

received 2004-03-29

#249778 A MONSANTO OIL COMPANY

received 1984-08-20

Records & Logs

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

W-2/G-1 2004-04-26 log on file

W-2/G-1 2004-06-07 log on file

W-2/G-1 2005-07-14

W-2/G-1 1985-02-21

W-2/G-1 1985-02-08

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images 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 HEMPHILL County.

Well Details

Well Number: 4
Max Depth: 7,870 ft
Drill Type: Vertical
County: HEMPHILL
District: 10
Operator: SUNDOWN ENERGY LP
Completed: 2004-03-11

Operator

Name: SUNDOWN ENGY LP
Location: DALLAS
P-5 Status: X (filed 2026-06-03)
Cum Oil (all leases): 16,582,532 bbl
Cum Gas (all leases): 24,624,728 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 300