42-105-34464

Final Completion

SHANNON ESTATE -B-

CROCKETT County · District 7 · CLARK OIL CO. · SHANNON (SEVEN RIVERS)

Permits

Max Depth

2,400 ft

First Permit

1983-04-21

Latest Activity

2006-01-06

Lifespan

23 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2006-01-20

Shut-In

—

Plugged

2024-12-11

EWA / Permit operator mismatch

Scheduling: CLARK OIL CO. ≠ Permit: SUNDOWN ENERGY LP

Resolved via: production → CLARK OIL CO.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Plugged 2025-03-06 UIC #000048988 permitted 1998-06-25

Permitted Volume

6,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

2,000–2,400 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.

Formation Tops (4) Elevation 2,417 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	1,060 ft	+1,357 ft
SOMA SAND	1,154 ft	+1,263 ft
QUEEN	1,771 ft	+646 ft
SAND ANDRES	1,980 ft	+437 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
1,708–1,742 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	668 ft	400 sx
2.875"	1,925 ft	—
5.5"	2,312 ft	500 sx

Permit History (2)

#611986 Recompletion Final Completion

SHANNON ESTATE -B- · 2,400 ft

2006-01-06

#192270 Drill Final Completion

SHANNON ESTATE B · 2,400 ft

1983-04-21

Spud 1983-06-01

Applications (2)

#611986 A SUNDOWN ENERGY LP

received 2006-01-06

#192270 A SUN EXPL. & PROD. CO.-MIDLAND

received 1983-04-21

Records & Logs

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

W-2/G-1 2006-02-06 log on file

W-2/G-1 2006-03-01

W-2/G-1 1983-08-22

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: 58
Max Depth: 2,400 ft
Drill Type: Vertical
County: CROCKETT
District: 7
Operator: CLARK OIL CO.
Completed: 2006-01-20

Operator

Name: CLARK OIL CO.
Location: DALLAS
P-5 Status: Active (filed 2025-10-14)
Cum Oil (all leases): 852,469 bbl
Cum Gas (all leases): 93 mcf
Activities: OPRS/G, OPRS/O