42-329-00894

Final Completion

PEGASUS SPRABERRY UNIT

MIDLAND County · District 7 · COG OPERATING LLC · PEGASUS (SPRABERRY)

Permits

Max Depth

10,438 ft

First Permit

1978-06-19

Latest Activity

1983-08-29

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1989-10-17

Shut-In

—

Plugged

1990-11-21

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

2010-07

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 2009-2010

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 (5) Elevation 2,890 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SAN ANDRES	4,660 ft	-1,770 ft
SPRABERRY	7,642 ft	-4,752 ft
DEAN	9,065 ft	-6,175 ft
WOLFCAMP	9,159 ft	-6,269 ft
STRAWN	10,008 ft	-7,118 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 (1)

Interval	Type
7,645–7,838 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	446 ft	350 sx
7.625"	5,971 ft	2,820 sx
5.5"	10,448 ft	—

Permit History (2)

#208292 Recompletion Final Completion

PEGASUS SPRABERRY UNIT · 10,438 ft

1983-08-29

#26806 Recompletion

PEGASUS FIELD UNIT #3 · 10,438 ft

1978-06-19

Applications (2)

#208292 A MOBIL PRODUCING TX. & N.M. INC.

received 1983-08-18

#26806 A MOBIL OIL CORPORATION

received 1978-06-19

Records & Logs

4 completion filings on record.

W-2/G-1 1989-10-30

W-2/G-1 1989-02-07

W-2/G-1 1984-01-27

W-2/G-1 1978-08-21

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: 711
Max Depth: 10,438 ft
Drill Type: Vertical
County: MIDLAND
District: 7
Operator: COG OPERATING LLC
Completed: 1989-10-17

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: 4,553