42-461-01080

Final Completion

PEGASUS PENNSYLVANIAN UNIT

UPTON County · District 7 · COG OPERATING LLC · PEGASUS (PENNSYLVANIAN)

Permits

Max Depth

13,285 ft

First Permit

1979-08-31

Latest Activity

1985-06-06

Lifespan

6 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1979-09-26

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: COG OPERATING LLC ≠ Production: XTO ENERGY INC. (reported 2026-04)

EWA / Permit operator mismatch

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

Resolved via: production → XTO ENERGY INC.

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. 1993-2011→ XTO ENERGY INC. 2012-2026

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 2,872 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	7,626 ft	-4,754 ft
PENNSYLVANIAN	10,043 ft	-7,171 ft
DEVONIAN	11,329 ft	-8,457 ft
ELLENBURGER	12,740 ft	-9,868 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 (3)

Interval	Type
11,700–12,002 ft	Perforated
12,728–12,835 ft	Perforated
12,857–12,870 ft	Perforated

Casing (7)

Size	Set Depth	Cement
13.375"	461 ft	—
13.375"	466 ft	—
9.625"	4,753 ft	—
9.625"	4,769 ft	—
7.625"	9,248 ft	—
2.375"	10,172 ft	—
7.625"	12,871 ft	—

Permit History (2)

#277007 Recompletion Final Completion

PEGASUS ELLENBURGER UNIT · 13,285 ft

1985-06-06

#56962 Recompletion Final Completion

PEGASUS PENNSYLVANIAN UNIT · 13,170 ft

1979-08-31

Applications (2)

#277007 A MOBIL PRODUCING TX. & N.M. INC.

received 1985-06-05

#56962 A MOBIL OIL CORPORATION

received 1979-08-31

Records & Logs

5 completion filings on record · 1 with log images at RRC.

W-2/G-1 1986-04-23

W-2/G-1 1985-12-02 log on file

W-2/G-1 1986-02-04

W-2/G-1 1979-10-16

W-2/G-1 1984-01-12

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 UPTON County.

Well Details

Well Number: 2302
Max Depth: 13,285 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: COG OPERATING LLC
Completed: 1979-09-26

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: 4,566