WELL · 42-495-34900 · DISTRICT 8

Vallecito State 3736-28B #421H

Y

Winkler County · Phantom (Wolfcamp) field · Shut IN  · Horizontal

Vallecito State 3736-28b #421H (API 42-495-34900) is a horizontal well in Winkler County operated by Wpx Energy Permian LLC, completed July 22, 2024 and listed as shut in on the RRC schedule.

The RRC has issued one drilling permit, issued August 17, 2023, permitted to 14,000 ft.

Completion filings report 11 formation tops, including Rustler, Delaware, Bone Spring, Capitan.

Its lease has reported 146K barrels of oil and 218K mcf of gas since January 2024, last reporting in July 2026.

Operator of record

WPX Energy Permian LLC

Oklahoma City, OK · P-5 Y, filed Sep 4, 2025 · 956 permits on file · (800) 465-8314

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleWPX Energy Permian LLC
Production reportsWPX Energy Permian, LLCthrough Mar 2026
Latest permitWPX Energy Permian, LLCAug 17, 2023
14,000
total depth, ft
1
permits on file
Aug 17, 2023
last permit issued
Jul 22, 2024
completed
146K
cumulative oil, bbl
218K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 2024 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jul 22, 2024
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active

Surface location

31.774135, -103.300850

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Winkler 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 →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Vallecito State 3736-28B O-10-60780Phantom (Wolfcamp)WPX Energy Permian, LLC1146K218KJan 2024 – Jul 2026

Oil, barrels lease total

Last 12 months 36,099 · prior 12 85,381(-58%)

010K20K202420252026

Gas, mcf lease total

Last 12 months 49,364 · prior 12 134,152(-63%)

010K20K30K202420252026

Chain of custody

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

  1. 1WPX Energy Permian, LLCMar 2024 → Mar 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
892833-99DrillWPX Energy Permian, LLCAug 10, 2023Aug 17, 2023Nov 16, 202314,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-10-60780————

Formation tops

As filed on W-2/G-1. Subsea from 2,841 ft elevation.Download CSV →

FormationMD ftSubsea
RustlerRUSTLER - POSSIBLE FLOW; POSSIBL8671,974
Delaware5,137-2,296
Bone Spring2ND BONE SPRING10,191-7,350
Bone Spring3RD BONE SPRING10,846-8,005
CapitanCAPITAN REEF - HIGH FLOWS——
Clear ForkCLEARFORK——
Colby / Queen——
Glorieta——
Holt——
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO——
Seven RiversSEVEN RIVERS / QUEEN——
Yates——

Perforations

Perforated and open-hole intervals.

FromToType
12,51422,645Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6254,83512.251,860 S
712,4808.75945 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Oct 25, 2024Aug 28, 2024—
00Sep 6, 2024Jun 6, 2024—
00May 9, 2024Mar 1, 2024Yes

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.

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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 →

Vallecito State 3736-28C42-495-34901

0.0 KM · WPX Energy Permian, LLC · Section with this well →

Rustler8671,974
Delaware5,139-2,298
Seven Rivers—
Yates—
Holt—
San Andres—
Colby / Queen—
Glorieta—

10 TOPS · FIRST 8

Vallecito State 3736-28A42-495-34899

0.0 KM · WPX Energy Permian, LLC · Section with this well →

Rustler8671,974
Delaware5,137-2,296
Holt—
Glorieta—
Colby / Queen—
Clear Fork—
Capitan—
Yates—

10 TOPS · FIRST 8

Vallecito State 3736-2842-495-33989

0.5 KM · Felix Energy Holdings II, LLC · Section with this well →

Delaware5,133-2,278
Glorieta—
Colby-Queen—
Clear Fork—
Yates—
Wichita-Albany—
San Andres—
Rustler—

10 TOPS · FIRST 8

Mitchell 48-2842-495-34039

0.9 KM · Felix Water, LLC · Section with this well →

Rustler8311,999
Salado1,2361,594
Capitan—
Colby / Queen—
Colby-Queen—
Queen—
Seven Rivers—
Yates—

Silver Dollar 4231-27 A42-495-34323

1.2 KM · Felix Energy Holdings II, LLC · Section with this well →

Rustler8761,968
Delaware5,140-2,296
Glorieta—
Holt—
Queen—
San Andres—
Wichita-Albany—
Colby-Queen—

10 TOPS · FIRST 8

Silver Dollar 4231-27 B42-495-34324

1.2 KM · WPX Energy Permian, LLC · Section with this well →

Rustler8761,968
Delaware5,148-2,304
Yates—
Wichita-Albany—
San Andres—
Queen—
Holt—
Glorieta—

10 TOPS · FIRST 8

Silver Dollar 4231-27 F42-495-34326

1.3 KM · Felix Energy Holdings II, LLC · Section with this well →

Rustler8741,969
Delaware5,154-2,311
Wichita-Albany—
Colby-Queen—
Ellenburger—
Fusselman—
Glorieta—
Holt—

12 TOPS · FIRST 8

Silver Dollar 4231-27 I42-495-34328

1.3 KM · Felix Energy Holdings II, LLC · Section with this well →

Rustler8741,968
Delaware5,151-2,309
San Andres—
Queen—
Holt—
Glorieta—
Colby-Queen—
Yates—

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/49534900, documented in the API reference.