42-495-01299

KEYSTONE CATTLE COMPANY

WINKLER County · District 8 · DEVON ENERGY PRODUCTION CO, L.P.

Permits

Max Depth

9,800 ft

First Permit

1997-09-10

Latest Activity

2003-07-22

Lifespan

6 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

Operator History

Chain of Custody

PENNZOIL PETROLEUM COMPANY 1993-1995→ PENNZOIL EXPLORATION & PROD. CO. 1995-1999→ PENNZENERGY EXP. & PROD., L.L.C. 1999-2000→ DEVON ENERGY PRODUCTION CO, L.P. 2000-2008→ LEGACY RESERVES OPERATING LP 2008-2023→ HIGHMARK ENERGY OPERATING, LLC 2023-2026

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 (4) Elevation 3,129 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
WOLFCAMP	8,148 ft	-5,019 ft
MISSISSIPPIAN LIME (Mississippian)	8,475 ft	-5,346 ft
WOODFORD SHALE (Woodford)	9,093 ft	-5,964 ft
DEVONIAN	9,595 ft	-6,466 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
9,605–9,755 ft	Perforated
9,770–9,780 ft	Perforated

Casing (4)

Size	Set Depth	Cement
20"	28 ft	120 sx
13.375"	1,100 ft	1,500 sx
9.625"	3,600 ft	725 sx
7"	10,264 ft	350 sx

Permit History (2)

#534426 Recompletion

KEYSTONE CATTLE COMPANY · 9,660 ft

2003-07-22

#466837 Recompletion

KEYSTONE CATTLE CO. · 9,800 ft

1997-09-10

Applications (2)

#534426 A DEVON ENERGY PRODUCTION CO, L.P.

received 2003-07-22

#466837 A PENNZOIL EXPLORATION & PROD. CO.

received 1997-08-27

Records & Logs

2 completion filings on record.

W-2/G-1 1986-07-15

W-2/G-1 1962-10-01

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 WINKLER County.

Well Details

Well Number: 146
Max Depth: 9,800 ft
Drill Type: Vertical
County: WINKLER
District: 8
Operator: DEVON ENERGY PRODUCTION CO, L.P.

Operator

Name: PENNZENERGY EXP. & PROD., L.L.C
Location: OKLAHOMA CI, TY
P-5 Status: Active (filed 2025-12-18)
Cum Oil (all leases): 365,943,944 bbl
Cum Gas (all leases): 9,274,880,220 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 9,259