← Wells

42-173-37868

Final Completion

MALLARD 23

GLASSCOCK County · District 8 · CRESCENT ENERGY OPERATING LLC · SPRABERRY (TREND AREA)

Permits

1

Max Depth

12,600 ft

First Permit

2018-04-12

Latest Activity

2018-04-12

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2018-12-14

Shut-In

—

Plugged

—

!

EWA / Permit operator mismatch

Scheduling: CRESCENT ENERGY OPERATING LLC ≠ Permit: PARSLEY ENERGY OPERATIONS, LLC

Resolved via: production → CRESCENT ENERGY OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2010-02

Last Production

2026-07

Injection / Disposal

GLASSCOCK County disposal market →
W-14 Disposal Active UIC #000113058 permitted 2019-03-12

Permitted Volume

30,000 bbl/d

Max Pressure

5,000 psi

Injection Interval

11,100–12,500 ft

Injected (12mo)

3,947,336 bbl

Monthly injected volume (bbl, from H-10 filings through 2026-01-01)

Seismicity: no M2+ earthquakes recorded within 10 km in the last 24 months · TexNet catalog

Operator History

Chain of Custody

CROWNQUEST OPERATING, LLC 2010-2017→ DE OPERATING LLC 2017-2017→ PARSLEY ENERGY OPERATIONS, LLC 2017-2021→ PIONEER NATURAL RES. USA, INC. 2021-2021→ LAREDO PETROLEUM, INC. 2021-2023→ VITAL ENERGY, INC. 2023-2025→ CRESCENT ENERGY OPERATING, LLC 2026-2026

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 (18) Elevation 2,712 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)2,826 ft-114 ft
SANTA ROSA 2,826 ft-114 ft
CLEARFORK (Clear Fork)5,414 ft-2,702 ft
SPRABERRY 6,153 ft-3,441 ft
WICHITA ALBANY (Wichita-Albany)7,387 ft-4,675 ft
DEAN 7,699 ft-4,987 ft
WOLFCAMP 7,865 ft-5,153 ft
PENNSYLVANIAN 9,560 ft-6,848 ft
STRAWN 9,901 ft-7,189 ft
ATOKA 10,086 ft-7,374 ft
FUSSELMAN 10,856 ft-8,144 ft
ELLENBURGER 11,295 ft-8,583 ft
GLORIETA ——
GRAYBURG ——
QUEEN ——
SEVEN RIVERS ——
WICHITA ALBANY (Wichita-Albany)——
YATES ——

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
✓ 42-173-35553 HIRT · BURLESON PETROLEUM, INC.
0.8 mi
Clear Fork 4,970'Spraberry 5,760'Wichita-Albany 7,290'Dean 7,460'Wolfcamp 7,560'Cline 9,470'Strawn 9,914'Devonian 10,528'Fusselman 10,935'
✓ 42-173-36004 HIRT · BURLESON PETROLEUM, INC.
1.4 mi
Spraberry 5,760'Wichita-Albany 7,290'Dean 7,460'Wolfcamp 7,560'Cline 9,470'Strawn 9,914'Devonian 10,528'Fusselman 10,935'Clear Fork —Glorieta —Seven Rivers —Santa Rosa — +4 more
✓ 42-173-37139 CLARK 12 12A · ENCANA OIL & GAS(USA) INC.
1.4 mi
Yates 2,077'San Andres 3,243'Clear Fork 5,043'Spraberry 6,272'Grayburg —Glorieta —Wichita-Albany —Queen —Seven Rivers —Santa Rosa —
✓ 42-173-38499 BOOKS 16-9 (ALLOC-H) · LAREDO PETROLEUM, INC.
2.0 mi
Salado 1,351'Yates 2,025'Seven Rivers 2,148'Queen 2,570'Grayburg 2,983'San Andres 3,427'Glorieta 4,439'Clear Fork 5,187'Spraberry 7,490'Rustler —Santa Rosa —
✓ 42-173-38929 HALFMANN 21 H · VITAL ENERGY, INC.
2.0 mi
Salado 1,344'Yates 2,011'Seven Rivers 2,149'Queen 2,571'Grayburg 2,978'San Andres 3,360'Glorieta 4,247'Clear Fork 5,183'Spraberry 6,378'Wolfcamp 8,025'Wolfcamp 8,305'Wolfcamp 8,858' +3 more
✓ 42-173-38500 BOOKS 16-9 (ALLOC-H) · LAREDO PETROLEUM, INC.
2.0 mi
Salado 1,350'Yates 2,021'Seven Rivers 2,150'Queen 2,571'Grayburg 2,981'San Andres 3,426'Glorieta 4,382'Clear Fork 5,186'Spraberry 7,493'Rustler —Santa Rosa —
✓ 42-173-38931 HALFMANN 21 H · VITAL ENERGY, INC.
2.0 mi
Salado 1,357'Yates 1,357'Yates 2,025'Seven Rivers 2,025'Seven Rivers 2,148'Queen 2,148'Queen 2,578'Grayburg 2,984'San Andres 3,364'Glorieta 4,252'Clear Fork 5,179'Spraberry 7,484' +2 more
✓ 42-173-38501 BOOKS 16-9 (ALLOC-H) · LAREDO PETROLEUM, INC.
2.0 mi
Yates 2,018'Seven Rivers 2,150'Queen 2,571'Grayburg 2,985'San Andres 3,431'Glorieta 4,384'Clear Fork 5,187'Spraberry 6,449'Spraberry 7,489'Rustler —Santa Rosa —

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
11,167–12,104 ftPerforated
11,167–12,104 ftOpen hole

Casing (2)

SizeSet DepthCement
13.375"380 ft410 sx
9.625"6,915 ft445 sx

Permit History (1)

#838736 Drill Final Completion

MALLARD 23 · 12,600 ft

2018-04-12

Spud 2018-10-01

Applications (1)

#838736 A PARSLEY ENERGY OPERATIONS, LLC
received 2018-04-11

Records & Logs

5 completion filings on record.

W-2/G-1 2023-02-27
W-2/G-1 2021-07-30
W-2/G-1 2019-03-27
W-2/G-1 2019-03-27
W-2/G-1 2019-03-07
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.

Google Maps → Explorer Map →
Lat 31.809579
Lon -101.579942

Well Details

Well Number
1D
Max Depth
12,600 ft
Drill Type
Vertical
County
GLASSCOCK
District
8
Operator
CRESCENT ENERGY OPERATING LLC
Completed
2018-12-14

Operator

Location
HOUSTON
P-5 Status
Active (filed 2025-08-28)
Cum Oil (all leases)
10,867,426 bbl
Cum Gas (all leases)
2,390,025 mcf
Activities
OPRS/G, OPRS/O
Total Permits
31