42-461-33137

Final Completion

NEAL HEIRS A

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

Permits

Max Depth

8,600 ft

First Permit

1991-02-20

Latest Activity

1991-05-14

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2016-02-10

Shut-In

—

Plugged

2019-03-12

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: PARKER & PARSLEY DEVELOPMENT CO.

Resolved via: scheduling → PIONEER NATURAL RES. USA INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2019-07

Operator History

Chain of Custody

PARKER & PARSLEY DEVELOPMENT CO. 1993-1995→ PARKER & PARSLEY DEVELOPMENT L.P 1995-1997→ PIONEER NATURAL RES. USA, INC. 1997-2017

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 (9) Elevation 2,733 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CLEARFORK (Clear Fork)	6,515 ft	-3,782 ft
TOP CLEARFORK (Clear Fork)	6,515 ft	-3,782 ft
TOP UPPER SPRABERRY (Spraberry)	7,047 ft	-4,314 ft
UPPER SPRABERRY (Spraberry)	7,074 ft	-4,341 ft
LOWER SPRABERRY (Spraberry)	7,684 ft	-4,951 ft
TOP LOWER SPRABERRY (Spraberry)	7,684 ft	-4,951 ft
DEAN	8,285 ft	-5,552 ft
TOP DEAN (Dean)	8,285 ft	-5,552 ft
BASE DEAN (Dean)	8,569 ft	-5,836 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 (5)

Interval	Type
6,611–6,784 ft	Perforated
6,611–7,261 ft	Perforated
7,075–7,261 ft	Perforated
7,695–7,983 ft	Perforated
8,290–8,559 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	456 ft	350 sx
4.5"	8,600 ft	1,300 sx

Permit History (2)

#384724 Drill Final Completion

NEAL HEIRS 'A' · 8,600 ft

1991-05-14

Spud 1991-02-23

#384724 Drill

NEAL HEIRS "A" · 8,600 ft

1991-02-20

Spud 1991-02-23

Applications (2)

#384724 A PARKER & PARSLEY DEVELOPMENT CO.

received 1991-05-10

#384724 A PARKER & PARSLEY, LTD.

received 1991-02-15

Records & Logs

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

W-2/G-1 2019-01-31

W-2/G-1 2011-11-17

W-2/G-1 1991-05-09 log on file

W-2/G-1 1991-05-15

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: 8,600 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: PIONEER NATURAL RES. USA INC.
Completed: 2016-02-10

Operator

Name: PIONEER NATURAL RES. USA, INC
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: 15,531