42-329-30341

Final Completion

GATLIN MARY

MIDLAND County · District 8 · COG OPERATING LLC · PARKS (SPRABERRY)

Permits

Max Depth

12,800 ft

First Permit

1985-06-14

Latest Activity

1987-12-07

Lifespan

2 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1988-05-11

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: COG OPERATING LLC ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.

Resolved via: scheduling → COG OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-1998→ HENRY PETROLEUM CORP. 1998-2001→ HENRY PETROLEUM LP 2001-2008→ COG OPERATING LLC 2009-2025

Lease Production

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

Formation Tops (4) Elevation 2,816 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
WOLFCAMP	9,220 ft	-6,404 ft
PENN (Pennsylvanian)	10,146 ft	-7,330 ft
FUSSELMAN	12,454 ft	-9,638 ft
MONTOYA	12,520 ft	-9,704 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 (4)

Interval	Type
7,798–8,267 ft	Perforated
8,369–8,711 ft	Perforated
11,679–11,961 ft	Perforated
12,461–12,612 ft	Perforated

Casing (6)

Size	Set Depth	Cement
10.75"	400 ft	—
10.75"	414 ft	400 sx
7.875"	5,700 ft	—
7.625"	5,700 ft	—
7.625"	5,702 ft	1,492 sx
2.375"	11,602 ft	—

Permit History (3)

#339441 Recompletion Final Completion

GATLIN, MARY · 10,555 ft

1987-12-07

#327109 Recompletion U

PARKS FIELD UNIT · 12,670 ft

1987-03-03

#277878 Recompletion U

GATLIN, MARY · 12,800 ft

1985-06-14

Applications (3)

#339441 A MOBIL PRODUCING TX. & N.M. INC.

received 1987-11-30

#327109 A MOBIL PRODUCING TX. & N.M. INC.

received 1987-02-26

#277878 A MOBIL PRODUCING TX. & N.M. INC.

received 1985-06-14

Records & Logs

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

W-2/G-1 1988-06-09 log on file

W-2/G-1 1988-06-18

W-2/G-1 1987-12-03

W-2/G-1 1986-01-21 log on file

W-2/G-1 1984-04-17

+2 more filings

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 MIDLAND County.

Well Details

Well Number: 4
Max Depth: 12,800 ft
Drill Type: Vertical
County: MIDLAND
District: 8
Operator: COG OPERATING LLC
Completed: 1988-05-11

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: 4,550