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42-383-39181

Final Completion Horizontal

ALDWELL M R40

REAGAN County · District 7 · PIONEER NATURAL RES. USA, INC.

Permits

2

Max Depth

11,000 ft

First Permit

2014-11-21

Latest Activity

2016-12-27

Lifespan

2 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2017-04

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 (8) Elevation 2,695 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN 2,839 ft-144 ft
GRAYBURG 3,313 ft-618 ft
SAN ANDRES - SALTWATER FLOW, POS (San Andres)3,559 ft-864 ft
CLEARFORK (Clear Fork)5,498 ft-2,803 ft
SPRABERRY 6,427 ft-3,732 ft
ELLENBURGER ——
FUSSELMAN ——
STRAWN ——

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
8,958–18,865 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,035 ft1,011 sx
9.625"8,110 ft1,100 sx
5.5"18,965 ft2,495 sx

Permit History (2)

#821206 Drill Final Completion

ALDWELL M R40 · 11,000 ft

2016-12-27

Spud 2017-03-08

#795835 Drill

ALDWELL M · 10,709 ft

2014-11-21

Applications (2)

#821206 A PIONEER NATURAL RES. USA, INC.
received 2016-12-13
#795835 A PIONEER NATURAL RES. USA, INC.
received 2014-09-08

Records & Logs

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

W-2/G-1 2017-11-02 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.

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
4H
Max Depth
11,000 ft
Drill Type
Horizontal
County
REAGAN
District
7
Operator
PIONEER NATURAL RES. USA, INC.

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