42-431-30759

Final Completion

WILLIAMS

STERLING County · District 8 · COG OPERATING LLC · STERLING CITY (FUSSELMAN)

Permits

Max Depth

8,538 ft

First Permit

1979-02-01

Latest Activity

2009-06-11

Lifespan

30 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2009-06-12

Shut-In

—

Plugged

2021-08-25

EWA / Permit operator mismatch

Scheduling: COG OPERATING LLC ≠ Permit: SAMSON LONE STAR, LLC

Resolved via: scheduling → COG OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2021-10

Operator History

Chain of Custody

SAMSON RESOURCES COMPANY 1993-1995→ SAMSON HYDROCARBONS COMPANY 1995-1996→ SAMSON LONE STAR LP 1996-2007→ SAMSON LONE STAR, LLC 2007-2010→ THREE RIVERS OPERATING CO LLC 2011-2012→ COG OPERATING LLC 2012-2020

Lease Production

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

Formation Tops (3) Elevation 2,412 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CISCO	6,248 ft	-3,836 ft
STRAWN LIME (Strawn)	8,243 ft	-5,831 ft
FUSSELMAN	8,422 ft	-6,010 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
6,889–7,656 ft	Perforated
8,424–8,430 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	2,018 ft	1,000 sx
2.375"	8,265 ft	—
5.5"	8,538 ft	1,250 sx

Permit History (2)

#681804 Recompletion Final Completion

WILLIAMS · 8,538 ft

2009-06-11

Spud 2009-05-28

#41882 Drill Final Completion

WILLIAMS · 8,538 ft

1979-02-01

Spud 1979-02-22

Applications (2)

#681804 A SAMSON LONE STAR, LLC

received 2009-06-03

#41882 A MESA PETROLEUM CO.

received 1979-02-01

Records & Logs

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

W-2/G-1 2009-07-27

W-2/G-1 2009-07-27 log on file

W-2/G-1 2010-03-04

W-2/G-1 1979-05-18 log on file

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 STERLING County.

Well Details

Well Number: 1
Max Depth: 8,538 ft
Drill Type: Vertical
County: STERLING
District: 8
Operator: COG OPERATING LLC
Completed: 2009-06-12

Operator

Name: COG OPER LLC
Location: MIDLAND
P-5 Status: X (filed 2026-06-02)
Cum Oil (all leases): 645,285,792 bbl
Cum Gas (all leases): 305,183,488 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 4,559