42-105-03019

SHANNON ESTATE 'B'

CROCKETT County · District 7 · SUNDOWN ENERGY LP

Permits

Max Depth

2,450 ft

First Permit

1980-04-09

Latest Activity

2012-07-31

Lifespan

32 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Plugged 2001-02-27 UIC #000055271 permitted 1998-06-25

Permitted Volume

6,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

2,030–2,186 ft

Injected (12mo)

—

Operator History

Chain of Custody

ENERGY PRODUCTION CORPORATION 1993-2002→ ZEPHYR LONE STAR OPER CO.,L.L.C. 2002-2002→ SUNDOWN ENERGY, INC. 2003-2005→ SUNDOWN ENERGY LP 2005-2017→ CLARK OIL CO. 2017-2026

Lease Production

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

Oil

production & DCA →

Formation Tops (1) Elevation 2,461 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SAN ANDRES	1,983 ft	+478 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
2,030–2,070 ft	Perforated
2,030–2,186 ft	Perforated
2,080–2,186 ft	Perforated

Casing (5)

Size	Set Depth	Cement
9.625"	623 ft	250 sx
9.625"	624 ft	250 sx
2.375"	2,239 ft	—
7"	2,270 ft	420 sx
7"	2,270 ft	420 sx

Permit History (2)

#743216 Reenter

SHANNON ESTATE 'B' · 2,270 ft

2012-07-31

#79909 Other Final Completion

SHANNON ESTATE VB" · 2,450 ft

1980-04-09

Applications (2)

#743216 A SUNDOWN ENERGY LP

received 2012-06-20

#79909 A SUN EXPL. & PROD. CO.-MIDLAND

received 1980-04-09

Records & Logs

4 completion filings on record.

W-2/G-1 1985-11-15

W-2/G-1 1985-05-14

W-2/G-1 1980-07-31

W-2/G-1 1984-01-12

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 CROCKETT County.

Well Details

Well Number: 23
Max Depth: 2,450 ft
Drill Type: Vertical
County: CROCKETT
District: 7
Operator: SUNDOWN ENERGY LP

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