42-461-03333

PEGASUS SPRABERRY UNIT

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

Permits

Max Depth

13,195 ft

First Permit

1978-10-05

Latest Activity

1990-05-18

Lifespan

12 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1978-11-10

Shut-In

—

Plugged

1994-06-23

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

1994-06

Operator History

originally filed by MOBIL PRODUCING TX. & N.M. INC. — asset transferred

Lease Production

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

Gas

production & DCA →

Formation Tops

No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. Offset-well tops can't be shown either — this well has no surface coordinates on file yet.

Check this well's filings at RRC ↗

Perforations (1)

Interval	Type
7,652–8,352 ft	Perforated

Casing (4)

Size	Set Depth	Cement
13.375"	474 ft	400 sx
9.625"	4,695 ft	2,650 sx
2.375"	8,342 ft	—
7.625"	9,325 ft	1,550 sx

Permit History (2)

#373301 Recompletion U

PEGASUS FIELD UNIT NO. 3 · 13,142 ft

1990-05-18

#34105 Recompletion Final Completion

PEGASUS SPRABERRY UNIT · 13,195 ft

1978-10-05

Applications (2)

#373301 A MOBIL PRODUCING TX. & N.M. INC.

received 1990-05-14

#34105 A MOBIL OIL CORPORATION

received 1978-10-05

Records & Logs

4 completion filings on record.

W-2/G-1 1990-06-11

W-2/G-1 1990-07-12

W-2/G-1 1979-03-29

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: 4903
Max Depth: 13,195 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: COG OPERATING LLC
Completed: 1978-11-10

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