WELL · 42-173-38978 · DISTRICT 8

Riley 26B #128H

Glasscock County · Spraberry (Trend Area) field · Producing · Horizontal

Riley 26b #128H (API 42-173-38978) is a horizontal well in Glasscock County operated by Pioneer Natural Res. USA Inc., completed March 19, 2024 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued July 5, 2023, permitted to 9,000 ft.

Completion filings report 12 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.

Its lease has reported 199K barrels of oil and 1.37M mcf of gas since November 2023, last reporting in July 2026.

Operator of record

Pioneer Natural Res. USA Inc.

Spring, TX · P-5 Y, filed May 4, 2026 · 15,619 permits on file · (972) 598-8150

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Pioneer Natural Res. USA Inc.
Production reports	Pioneer Natural Res. USA, Inc.through Apr 2026
Latest permit	Pioneer Natural Res. USA, Inc.Jul 5, 2023

9,000: total depth, ft
1: permits on file
Jul 5, 2023: last permit issued
Mar 19, 2024: completed
199K: cumulative oil, bbl
1.37M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Nov 2023 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Mar 19, 2024
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active

Surface location

31.773771, -101.681898

OpenStreetMap → · Google Maps →

Permit surface location from the RRC GIS record, in Glasscock County.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Riley 26B O-10-61023	Spraberry (Trend Area)	Pioneer Natural Res. USA, Inc.	1	199K	1.37M	Nov 2023 – Jul 2026

Gas, mcf lease total

Last 12 months 564,564 · prior 12 742,537(-24%)

Oil, barrels lease total

Last 12 months 44,248 · prior 12 120,181(-63%)

Chain of custody

Every operator that reported production on this well's lease, in order.

1Pioneer Natural Res. USA, Inc.Mar 2024 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
891018-99	Drill	Pioneer Natural Res. USA, Inc.	May 31, 2023	Jul 5, 2023	Sep 21, 2023	9,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-10-61023	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 2,732 ft elevation.Download CSV →

Formation	MD ft	Subsea
Santa Rosa	1,052	1,680
Yates	2,191	541
Seven Rivers	2,468	264
Queen	2,948	-216
Grayburg	3,413	-681
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	3,675	-943
Clear ForkCLEARFORK	5,574	-2,842
Spraberry	6,730	-3,998
Cambrian	—	—
Glorieta	—	—
Precambrian (Undifferentiated)	—	—
Rustler	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
9,631	25,256	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	1,312	17.5	1,500 S
9.625	6,063	12.25	1,675 S
5.5	25,281	6.75	1,910 S

Completion filings

W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →

Suffix	Filed	W-2 / G-1 date	Logs referenced
00	Aug 21, 2024	May 21, 2024	—
00	Jul 8, 2024	Apr 15, 2024	Yes

The source documents

Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.

Wellbore filings for 42-173-38978 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-173-38978 → scanned completion filings

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.

Nearby wells and their tops

NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM

Draw a cross-section

This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Riley 26A42-173-38980

0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,052	1,680
Yates	2,193	539
Seven Rivers	2,466	266
Queen	2,949	-217
Grayburg	3,412	-680
San Andres	3,674	-942
Clear Fork	5,575	-2,843
Spraberry	6,733	-4,001

10 TOPS · FIRST 8

Riley 26Z42-173-38983

0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,052	1,680
Yates	2,193	539
Seven Rivers	2,471	261
Queen	2,952	-220
Grayburg	3,414	-682
San Andres	3,678	-946
Clear Fork	5,584	-2,852
Spraberry	6,732	-4,000

10 TOPS · FIRST 8

Tropicana West 23-14I42-173-38868

0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	817	1,915
Rustler	1,337	1,395
Yates	2,186	546
Seven Rivers	2,460	272
Queen	2,959	-227
Grayburg	3,440	-708
San Andres	3,711	-979
Clear Fork	5,639	-2,907

10 TOPS · FIRST 8

Tropicana West 23-14J42-173-38875

0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	817	1,915
Rustler	1,337	1,395
Yates	2,185	547
Seven Rivers	2,461	271
Queen	2,960	-228
Grayburg	3,429	-697
San Andres	3,698	-966
Clear Fork	5,619	-2,887

10 TOPS · FIRST 8

Tropicana West 23-14K42-173-38869

0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	817	1,915
Rustler	1,337	1,395
Yates	2,186	546
Seven Rivers	2,459	273
Queen	2,953	-221
Grayburg	3,422	-690
San Andres	3,688	-956
Clear Fork	5,617	-2,885

10 TOPS · FIRST 8

Riley 26J42-173-39274

0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	640	2,087
Rustler	1,392	1,335
Yates	2,188	539
Seven Rivers	2,470	257
Queen	2,954	-227
Grayburg	3,421	-694
San Andres	3,683	-956
Clear Fork	5,560	-2,833

10 TOPS · FIRST 8

Riley 26I42-173-38979

0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,053	1,680
Yates	2,164	569
Seven Rivers	2,456	277
Queen	2,958	-225
Grayburg	3,410	-677
San Andres	3,724	-991
Clear Fork	5,570	-2,837
Spraberry	6,734	-4,001

10 TOPS · FIRST 8

Riley 26H42-173-38981

0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,053	1,680
Yates	2,185	548
Seven Rivers	2,469	264
Queen	2,954	-221
Grayburg	3,420	-687
San Andres	3,686	-953
Clear Fork	5,572	-2,839
Spraberry	6,739	-4,006

10 TOPS · FIRST 8

About this data

Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.

New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease

Developers: this page as JSON is GET /v1/data/wells/17338978, documented in the API reference.