42-461-31473

Final Completion

UNIVERSITY A

UPTON County · District 7 · ATLAS OPERATING LLC · SPRABERRY (TREND AREA CL. FK.)

Permits

Max Depth

8,500 ft

First Permit

1979-08-31

Latest Activity

1987-08-17

Lifespan

8 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1987-09-02

Shut-In

—

Plugged

2010-06-03

EWA / Production operator mismatch

Scheduling: ATLAS OPERATING LLC ≠ Production: PIONEER EXPLORATION, LLC (reported 2009-03)

EWA / Permit operator mismatch

Scheduling: ATLAS OPERATING LLC ≠ Permit: ENSOURCE INC.

Resolved via: scheduling → ATLAS OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2011-12

Operator History

Chain of Custody

UMC PETROLEUM CORPORATION 1993-1997→ PIONEER EXPLORATION COMPANY 1997-2001→ PIONEER EXPLORATION, LTD. 2001-2008→ PIONEER EXPLORATION, LLC 2008-2009

Lease Production

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

Formation Tops (6) Elevation 2,690 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CLEARFORK (Clear Fork)	6,354 ft	-3,664 ft
SPRABERRY	6,683 ft	-3,993 ft
JO MILL	7,518 ft	-4,828 ft
JOMILL	7,518 ft	-4,828 ft
DEAN	8,010 ft	-5,320 ft
WOLFCAMP	8,198 ft	-5,508 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
6,354–6,445 ft	Perforated
8,014–8,148 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	430 ft	350 sx
2.375"	7,244 ft	—
4.5"	8,239 ft	700 sx

Permit History (2)

#334218 Recompletion Final Completion

UNIVERSITY "A" · 8,250 ft

1987-08-17

#57048 Drill Final Completion

UNIVERSITY "A" · 8,500 ft

1979-08-31

Applications (2)

#334218 A ENSOURCE INC.

received 1987-08-10

#57048 A PALO-PLACER

received 1979-08-31

Records & Logs

4 completion filings on record · 2 with log images at RRC.

W-2/G-1 1987-10-20 log on file

W-2/G-1 1987-09-11 log on file

W-2/G-1 1987-09-18

W-2/G-1 1979-11-26

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: 1
Max Depth: 8,500 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: ATLAS OPERATING LLC
Completed: 1987-09-02

Operator

Name: ATLAS OPER LLC
Location: HOUSTON
P-5 Status: H (filed 2026-03-09)
Cum Oil (all leases): 7,184,429 bbl
Cum Gas (all leases): 10,995,911 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
Total Permits: 78