42-173-39275

PRODUCING Horizontal

RILEY 26K

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

Permits

1

Max Depth

10,269 ft

First Permit

2025-04-23

Latest Activity

2025-04-23

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

2025-07

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 (10) Elevation 2,727 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 640 ft+2,087 ft
RUSTLER 1,193 ft+1,534 ft
YATES 2,189 ft+538 ft
SEVEN RIVERS 2,468 ft+259 ft
QUEEN 2,957 ft-230 ft
GRAYBURG 3,421 ft-694 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)3,684 ft-957 ft
CLEARFORK (Clear Fork)5,603 ft-2,876 ft
SPRABERRY 6,749 ft-4,022 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
42-173-39276 RILEY 26L · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 640'Rustler 1,406'Yates 2,186'Seven Rivers 2,457'Queen 2,954'Grayburg 3,408'San Andres 3,675'Clear Fork 5,566'Spraberry 6,720'Glorieta
42-173-39274 RILEY 26J · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 640'Rustler 1,392'Yates 2,188'Seven Rivers 2,470'Queen 2,954'Grayburg 3,421'San Andres 3,683'Clear Fork 5,560'Spraberry 6,723'Glorieta
42-173-38731 TROPICANA EAST M 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 817'Rustler 1,336'Santa Rosa 1,396'Yates 2,183'Seven Rivers 2,463'Queen 2,991'Grayburg 3,410'San Andres 3,674'Clear Fork 5,595'Spraberry 6,723'Rustler Glorieta +1 more
42-173-38730 TROPICANA EAST M 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 817'Rustler 1,336'Rustler 1,396'Yates 2,180'Seven Rivers 2,456'Queen 2,946'Grayburg 3,410'San Andres 3,668'Clear Fork 5,584'Spraberry 6,732'Seven Rivers Santa Rosa +1 more
42-173-38732 TROPICANA EAST N 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 817'Rustler 1,336'Rustler 1,396'Yates 2,192'Seven Rivers 2,466'Queen 2,959'Grayburg 3,411'San Andres 3,669'Clear Fork 5,569'Spraberry 6,733'Santa Rosa PRECAMBRIAN (UNDIFFERENTIATED) +2 more
42-173-38733 TROPICANA EAST O 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 817'Rustler 1,336'Rustler 1,396'Yates 2,186'Seven Rivers 2,464'Queen 2,951'Grayburg 3,400'San Andres 3,657'Clear Fork 5,575'Spraberry 6,723'Santa Rosa Glorieta +1 more
42-173-38734 TROPICANA EAST O 14-26 · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 817'Rustler 1,336'Rustler 1,396'Yates 2,181'Seven Rivers 2,455'Queen 2,953'Grayburg 3,400'San Andres 3,660'Clear Fork 5,562'Spraberry 6,724'Santa Rosa Glorieta +1 more
42-173-38869 TROPICANA WEST 23-14K · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 817'Rustler 1,337'Yates 2,186'Seven Rivers 2,459'Queen 2,953'Grayburg 3,422'San Andres 3,688'Clear Fork 5,617'Spraberry 6,739'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
10,685–26,491 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,235 ft1,500 sx
9.625"5,094 ft1,196 sx
5.5"26,516 ft1,831 sx

Permit History (1)

Applications (1)

#906915 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 2026-02-13
W-2/G-1 2025-11-17 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 31.773972
Lon -101.681062

Well Details

Well Number
111H
Max Depth
10,269 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