42-135-34081

S.W. RATLIFF -L-

ECTOR County · District 8 · COG OPERATING LLC

Permits

Max Depth

13,800 ft

First Permit

1982-11-02

Latest Activity

2017-05-02

Lifespan

34 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

ECTOR County disposal market →

H-1 Injection Plugged 2024-09-26 UIC #000115273 permitted 2017-06-01

Permitted Volume

25,000 bbl/d

Max Pressure

5,980 psi

Injection Interval

11,960–13,822 ft

Injected (12mo)

—

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-1996→ EUREKA PROSPECTING COMPANY 1996-2023→ RME PETROLEUM COMPANY 2002-2002→ ANADARKO E&P COMPANY LP 2002-2004→ MERIT ENERGY COMPANY 2004-2010→ PDC-WV-CO CORPORATION 2010-2010→ PDC ENERGY 2010-2012→ COG OPERATING LLC 2012-2015→ SLANT OPERATING, LLC 2023-2026

Lease Production

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

Formation Tops (7) Elevation 3,000 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	3,120 ft	-120 ft
SPRABERRY	8,072 ft	-5,072 ft
SPRABERRY	8,120 ft	-5,120 ft
STRAWN	10,100 ft	-7,100 ft
BEND	10,693 ft	-7,693 ft
FUSSELMAN	12,891 ft	-9,891 ft
ELLENBURGER	13,645 ft	-10,645 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
12,100–12,237 ft	Perforated
12,260–12,320 ft	Perforated

Casing (7)

Size	Set Depth	Cement
13.375"	468 ft	750 sx
13.375"	468 ft	—
9.625"	5,700 ft	1,200 sx
9.625"	5,700 ft	—
2.375"	12,004 ft	—
5.5"	13,800 ft	2,000 sx
5.5"	13,800 ft	—

Permit History (2)

#825922 Reclass

S.W. RATLIFF -L- · 13,800 ft

2017-05-02

#176273 Drill Final Completion

RATLIFF, SALLIE W. · 13,800 ft

1982-11-02

Spud 1982-11-03

Applications (2)

#825922 A COG OPERATING LLC

received 2017-04-26

#176273 A MOBIL PRODUCING TX. & N.M. INC.

received 1982-11-02

Records & Logs

4 completion filings on record.

W-2/G-1 2019-06-20

W-2/G-1 1986-08-27

W-2/G-1 1983-04-21

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 ECTOR County.

Well Details

Well Number: 1
Max Depth: 13,800 ft
Drill Type: Vertical
County: ECTOR
District: 8
Operator: COG OPERATING LLC

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: 4,538