42-165-01504

Final Completion

RUSSELL L. B.

GAINES County · District 8 · EXTEX OPERATING COMPANY · CARM-ANN (SAN ANDRES)

Permits

Max Depth

11,000 ft

First Permit

1982-07-22

Latest Activity

2008-06-03

Lifespan

26 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1983-01-22

Shut-In

—

Plugged

1984-08-21

EWA / Permit operator mismatch

Scheduling: EXTEX OPERATING COMPANY ≠ Permit: COG OPERATING LLC

Resolved via: production → EXTEX OPERATING COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Active UIC #000099642 permitted 2008-10-22

Permitted Volume

1,500 bbl/d

Max Pressure

1,000 psi

Injection Interval

4,619–5,900 ft

Injected (12mo)

30,403 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-10-01)

Operator History

Chain of Custody

MARALO, INC. 1993-1998→ MARALO, LLC 1999-2004→ COG OPERATING LLC 2004-2012→ LEGACY RESERVES OPERATING LP 2013-2021→ EXTEX OPERATING COMPANY 2021-2026

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 (6) Elevation 3,197 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
TANSILL	2,828 ft	+369 ft
YATES	2,910 ft	+287 ft
7 RIVERS (Seven Rivers)	3,108 ft	+89 ft
QUEEN/BOWERS (Queen)	3,450 ft	-253 ft
FUHRMAN SAN ANDRES	4,400 ft	-1,203 ft
SAN ANDRES	4,607 ft	-1,410 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
4,619–4,683 ft	Perforated
5,220–5,405 ft	Perforated

Casing (4)

Size	Set Depth	Cement
13.375"	366 ft	400 sx
9.625"	4,476 ft	1,700 sx
2.375"	4,764 ft	—
7.625"	9,705 ft	615 sx

Permit History (2)

#661892 Reenter Final Completion

L. B. RUSSELL · 11,000 ft

2008-06-03

Spud 2008-07-17

#167111 Other Final Completion

RUSSELL, L. B. · 11,000 ft

1982-07-22

Applications (2)

#661892 A COG OPERATING LLC

received 2008-05-13

#167111 A MARALO, INC.

received 1982-07-22

Records & Logs

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

W-2/G-1 2009-05-27 log on file

W-2/G-1 2009-08-03

W-2/G-1 1983-02-09 log on file

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 GAINES County.

Well Details

Well Number: 1
Max Depth: 11,000 ft
Drill Type: Vertical
County: GAINES
District: 8
Operator: EXTEX OPERATING COMPANY
Completed: 1983-01-22

Operator

Name: EXTEX OPER CO
Location: HOUSTON
P-5 Status: Active (filed 2026-01-07)
Cum Oil (all leases): 5,887,486 bbl
Cum Gas (all leases): 10,031,045 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 117