42-173-39284

PRODUCING Horizontal

CALVERLEY-MCDANIELS 26H

GLASSCOCK County · District 8 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)

Permits

1

Max Depth

10,294 ft

First Permit

2025-03-28

Latest Activity

2025-03-28

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2025-12-04

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2025-06

Last Production

2026-07

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (13) Elevation 2,729 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 642 ft+2,087 ft
RUSTLER 1,195 ft+1,534 ft
YATES 2,180 ft+549 ft
SEVEN RIVERS 2,463 ft+266 ft
QUEEN 2,954 ft-225 ft
GRAYBURG 3,419 ft-690 ft
GRAYBURG 3,420 ft-691 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)3,707 ft-978 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)3,708 ft-979 ft
CLEARFORK (Clear Fork)5,578 ft-2,849 ft
CLEARFORK (Clear Fork)5,579 ft-2,850 ft
SPRABERRY 6,724 ft-3,995 ft
GLORIETA

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
42-173-39283 CALVERLEY-MCDANIELS 26G · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 642'Rustler 1,195'Yates 2,182'Seven Rivers 2,466'Queen 2,955'Grayburg 3,421'San Andres 3,707'Clear Fork 5,598'Spraberry 6,746'Glorieta
42-173-39285 CALVERLEY-MCDANIELS 26I · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 642'Rustler 1,195'Yates 2,182'Seven Rivers 2,463'Queen 2,958'Grayburg 3,423'San Andres 3,717'Clear Fork 5,568'Spraberry 6,737'Glorieta
42-173-38729 TROPICANA EAST L 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 819'Rustler 1,338'Yates 2,190'Seven Rivers 2,467'Queen 3,006'Grayburg 3,432'San Andres 3,692'Clear Fork 5,606'Spraberry 6,727'Rustler Glorieta Santa Rosa +1 more
42-173-38727 TROPICANA EAST K 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 819'Rustler 1,338'Rustler 1,396'Yates 2,195'Seven Rivers 2,468'Queen 3,009'Grayburg 3,433'San Andres 3,715'Clear Fork 5,613'Spraberry 6,731'Dean 8,094'Santa Rosa +2 more
42-173-38728 TROPICANA EAST K 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 819'Rustler 1,338'Yates 2,194'Seven Rivers 2,466'Queen 2,977'Grayburg 3,424'San Andres 3,704'Clear Fork 5,604'Spraberry 6,742'Glorieta Seven Rivers Santa Rosa
42-173-38876 TROPICANA WEST 23-14T · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 818'Rustler 1,338'Yates 2,195'Seven Rivers 2,482'Queen 2,979'Grayburg 3,450'San Andres 3,732'Clear Fork 5,615'Spraberry 6,765'Glorieta
42-173-38986 RILEY 26D · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,053'Yates 2,193'Seven Rivers 2,475'Queen 2,965'Grayburg 3,425'San Andres 3,729'Clear Fork 5,593'Spraberry 6,763'Glorieta Rustler
42-173-38870 TROPICANA WEST 23-14U · PIONEER NATURAL RES. USA, INC.
0.0 mi
Grayburg 351'Santa Rosa 818'Rustler 1,338'Yates 2,198'Seven Rivers 2,519'Queen 2,981'Grayburg 3,451'San Andres 3,733'Clear Fork 5,606'Spraberry 6,767'Glorieta

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
8,178–23,836 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,066 ft1,300 sx
9.625"5,053 ft1,500 sx
5.5"23,861 ft1,360 sx

Permit History (1)

Applications (1)

#906929 A PIONEER NATURAL RES. USA, INC.
received 2025-03-25

Records & Logs

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

W-2/G-1 2026-02-12
W-2/G-1 2025-10-23 log on file

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.

Lat 31.773843
Lon -101.683611

Well Details

Well Number
308H
Max Depth
10,294 ft
Drill Type
Horizontal
County
GLASSCOCK
District
8
Completed
2025-12-04

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
15,399