← Wells

42-173-31514

Final Completion

HALFMANN 4

GLASSCOCK County · District 8 · PIONEER NATURAL RES. USA INC. · DEWEY LAKE S. (STRAWN)

Permits

1

Max Depth

10,200 ft

First Permit

1983-11-23

Latest Activity

1983-11-23

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1984-01-07

Shut-In

—

Plugged

2014-08-26

!

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: L & B OIL CO. INC.

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

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2023-12

Operator History

Chain of Custody

COSTILLA PETROLEUM CORPORATION 1993-1997→ COSTILLA ENERGY, INC. 1997-1997→ CONCHO RESOURCES INC. 1998-2001→ DEVON ENERGY PRODUCTION CO, L.P. 2001-2002→ JETTA OPERATING COMPANY, INC. 2002-2005→ SUNDOWN ENERGY LP 2005-2015→ DIAMONDBACK E&P LLC 2015-2016→ DE OPERATING LLC 2017-2017→ PARSLEY ENERGY OPERATIONS, LLC 2017-2021

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 (6) Elevation 2,719 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SAN ANDRES 3,300 ft-581 ft
CLEARFORK (Clear Fork)5,708 ft-2,989 ft
SPRAYBERRY (Spraberry)6,488 ft-3,769 ft
DEAN 7,876 ft-5,157 ft
WOLFCAMP 8,032 ft-5,313 ft
STRAWN 10,035 ft-7,316 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)

IntervalType
10,037–10,135 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"390 ft400 sx
9.625"3,390 ft400 sx
5.5"10,228 ft755 sx

Permit History (1)

#221706 Drill Final Completion

HALFMANN · 10,200 ft

1983-11-23

Applications (1)

#221706 A L & B OIL CO. INC.
received 1983-11-23

Records & Logs

2 completion filings on record.

W-2/G-1 1984-02-16
W-2/G-1 1984-02-16
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 GLASSCOCK County.

Well Details

Well Number
2
Max Depth
10,200 ft
Drill Type
Vertical
County
GLASSCOCK
District
8
Operator
PIONEER NATURAL RES. USA INC.
Completed
1984-01-07

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
15,403