← Wells

42-383-40383

PRODUCING Horizontal

HALFF-HALL 1U

REAGAN County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA) R 40 EXC

Permits

1

Max Depth

10,200 ft

First Permit

2018-09-12

Latest Activity

2018-09-12

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-06-06

Shut-In

—

Plugged

—

P-5 Org Status: Active

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2019-06

Last Production

2026-07

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 (5) Elevation 2,699 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 2,187 ft+512 ft
GRAYBURG 3,733 ft-1,034 ft
SAN ANDRES 3,851 ft-1,152 ft
SPRABERRY 6,705 ft-4,006 ft
WOLFCAMP 8,283 ft-5,584 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
✓ 42-383-40384 HALFF-HALL 1V · PIONEER NATURAL RES. USA, INC.
0.0 mi
Queen 3,099'Grayburg 3,710'San Andres 3,840'Clear Fork 5,833'Spraberry 6,703'Strawn —Ellenburger —Fusselman —
✓ 42-383-40382 HALFF-HALL 1T · PIONEER NATURAL RES. USA, INC.
0.0 mi
Queen 3,100'Grayburg 3,725'San Andres 3,852'Clear Fork 5,838'Spraberry 6,710'Fusselman —Ellenburger —Strawn —
✓ 42-383-40381 HALFF-HALL 1S · PIONEER NATURAL RES. USA, INC.
0.0 mi
Queen 3,097'Grayburg 3,709'San Andres 3,852'Clear Fork 5,836'Spraberry 6,708'Strawn —Fusselman —Ellenburger —
✓ 42-383-40115 HALFF 1R · PIONEER NATURAL RES. USA, INC.
0.0 mi
Queen 3,091'Grayburg 3,652'San Andres 3,775'Clear Fork 5,829'Fusselman —Ellenburger —Spraberry —Strawn —
✓ 42-383-40113 HALFF 1Q · PIONEER NATURAL RES. USA, INC.
0.0 mi
Queen 3,096'Grayburg 3,652'San Andres 3,776'Clear Fork 5,836'Ellenburger —Spraberry —Strawn —Fusselman —
✓ 42-383-40114 HALFF 1P · PIONEER NATURAL RES. USA, INC.
0.0 mi
Queen 3,093'Grayburg 3,655'San Andres 3,773'Clear Fork 5,832'Ellenburger —Spraberry —Strawn —Fusselman —
✓ 42-461-40718 HALFF 1F · PIONEER NATURAL RES. USA, INC.
0.6 mi
Yates 2,188'Grayburg 3,664'San Andres 3,787'Spraberry 6,717'Wolfcamp 8,303'Ellenburger —Fusselman —Devonian —Strawn —
✓ 42-461-40717 HALFF 1E · PIONEER NATURAL RES. USA, INC.
0.6 mi
Yates 2,186'Grayburg 3,692'San Andres 3,809'Spraberry 6,727'Wolfcamp 8,322'Ellenburger —Strawn —Fusselman —Devonian —

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 (1)

IntervalType
9,335–19,657 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,287 ft1,325 sx
9.625"5,879 ft1,030 sx
5.5"19,692 ft1,270 sx

Permit History (1)

#844107 Drill Final Completion

HALFF-HALL 1U · 10,200 ft

2018-09-12

Spud 2018-11-08

Applications (1)

#844107 A PIONEER NATURAL RES. USA, INC.
received 2018-08-29

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2019-08-12 log on file
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 31.405953
Lon -101.771144

Well Details

Well Number
21H
Max Depth
10,200 ft
Drill Type
Horizontal
County
REAGAN
District
7
Operator
PIONEER NATURAL RES. USA INC.
Completed
2019-06-06

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
15,400