← Wells

42-383-35281

PRODUCING

MCMASTER -A-

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

Permits

1

Max Depth

8,350 ft

First Permit

2003-01-28

Latest Activity

2003-01-28

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2003-04-29

Shut-In

—

Plugged

—

P-5 Org Status: Active

!

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: TAMARACK PETROLEUM COMPANY, INC.

Resolved via: production → PIONEER NATURAL RES. USA, INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

TAMARACK PETROLEUM COMPANY, INC. 1993-2007→ MARINER ENERGY, INC. 2007-2010→ APACHE CORPORATION 2010-2017→ PARSLEY ENERGY OPERATIONS, LLC 2017-2021→ PIONEER NATURAL RES. USA, INC. 2021-2026

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 (4) Elevation 2,678 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
TOP UPPER SPRABERRY (Spraberry)6,158 ft-3,480 ft
TOP LOWER SPRABERRY (Spraberry)7,048 ft-4,370 ft
TOP DEAN (Dean)7,596 ft-4,918 ft
TOP WOLFCAMP (Wolfcamp)7,781 ft-5,103 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
6,180–8,387 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"440 ft230 sx
5.5"8,450 ft1,020 sx

Permit History (1)

#526871 Drill Final Completion

MCMASTER -A- · 8,350 ft

2003-01-28

Spud 2003-03-24

Applications (1)

#526871 A TAMARACK PETROLEUM COMPANY, INC.
received 2003-01-02

Records & Logs

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

W-2/G-1 2003-05-16 log on file
W-2/G-1 2003-06-04
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 REAGAN County.

Well Details

Well Number
1402
Max Depth
8,350 ft
Drill Type
Vertical
County
REAGAN
District
7
Operator
PIONEER NATURAL RES. USA INC.
Completed
2003-04-29

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
15,401