← Wells

42-461-31602

Final Completion

MOBIL-NEAL 12

UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)

Permits

2

Max Depth

12,000 ft

First Permit

1980-06-30

Latest Activity

2022-04-26

Lifespan

42 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1999-12-10

Shut-In

—

Plugged

2025-03-31

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2025-06

Operator History

Chain of Custody

COX, JOHN L. 1993-1999→ PIONEER NATURAL RES. USA, INC. 1999-2022

Lease Production

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

Oil
production & DCA →
Oil
production & DCA →

Formation Tops (3) Elevation 2,693 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SAN ANDRES 4,400 ft-1,707 ft
SPRABERRY 6,770 ft-4,077 ft
FUSSELMAN 11,440 ft-8,747 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 ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
✓ 42-461-42512 AVERY 35-11 E · HENRY RESOURCES LLC
0.6 mi
Yates 2,344'Grayburg 4,397'San Andres 4,851'Spraberry 6,961'Wolfcamp 8,459'Devonian —Strawn —Fusselman —Ellenburger —
✓ 42-461-42513 AVERY 35-11 D · HENRY RESOURCES LLC
0.6 mi
Yates 2,344'Grayburg 4,397'San Andres 4,851'Spraberry 6,961'Wolfcamp 8,459'Fusselman —Devonian —Ellenburger —Strawn —
✓ 42-461-42511 AVERY 35-11 C · HENRY RESOURCES LLC
0.6 mi
Yates 2,344'Grayburg 4,397'San Andres 4,851'Spraberry 6,961'Wolfcamp 8,459'Devonian —Fusselman —Ellenburger —Strawn —
✓ 42-461-42510 AVERY 35-11 B · HENRY RESOURCES LLC
0.6 mi
Yates 2,344'Grayburg 4,397'San Andres 4,851'Spraberry 6,961'Wolfcamp 8,459'Devonian —Strawn —Ellenburger —Fusselman —
✓ 42-461-41727 AVERY 35-11 · HENRY RESOURCES LLC
0.8 mi
Yates 2,295'Grayburg 4,218'San Andres 4,650'Spraberry 6,984'Wolfcamp 8,457'Devonian —Fusselman —Ellenburger —Strawn —
✓ 42-461-32002 AMERADA-NEAL 'D' · DE3 OPERATING LLC
1.1 mi
Spraberry 7,520'Dean 8,190'Fusselman 11,330'
✓ 42-461-31963 AMERADA-NEAL C · DE3 OPERATING LLC
1.4 mi
Spraberry 7,520'Dean 8,190'Fusselman 11,390'
✓ 42-461-41498 MYERS · MID-STATES OPERATING COMPANY
1.5 mi
Yates 2,228'Grayburg 3,935'San Andres 4,270'Ellenburger —Devonian —Strawn —Spraberry —Wolfcamp —Fusselman —

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (2)

IntervalType
8,938–8,962 ftPerforated
?–11,501 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"543 ft400 sx
8.625"4,890 ft1,000 sx
4.5"11,615 ft1,500 sx

Permit History (2)

#879345 Recompletion Final Completion

MOBIL-NEAL 12 · 11,615 ft

2022-04-26

Spud 1999-12-01

#85438 Drill Final Completion

MOBIL-NEAL "12" · 12,000 ft

1980-06-30

Spud 1980-07-02

Applications (2)

#879345 A PIONEER NATURAL RES. USA, INC.
received 2022-04-21
#85438 A COX, JOHN L.
received 1980-06-30

Records & Logs

2 completion filings on record.

W-2/G-1 2022-05-19
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.

Google Maps → Explorer Map →
Lat 31.349187
Lon -101.879631

Well Details

Well Number
1
Max Depth
12,000 ft
Drill Type
Vertical
County
UPTON
District
7
Operator
PIONEER NATURAL RES. USA INC.
Completed
1999-12-10

Operator

Location
Y SPRING
P-5 Status
Active (filed 2025-08-01)
Cum Oil (all leases)
1,771,882,421 bbl
Cum Gas (all leases)
1,763,727,021 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
15,399