TEXAS · WELLS · MIDLAND COUNTY · SHACKELFORD W40D LEASE · API 42-329-43772 · DISTRICT 7B

Shackelford W40D #4H

Midland County · Spraberry (Trend Area) R 40 Exc field · Producing · Horizontal

Fields on the latest permit · any of 2: Spraberry (Trend Area) · Spraberry (Trend Area) R 40 Exc; Not one formation; the well must be completed in one of them, and no target formation is stated.

Shackelford W40d #4H (API 42-329-43772) is a horizontal well in Midland County operated by Pioneer Natural Res. USA Inc., completed November 24, 2020 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued November 14, 2019, permitted to 8,832 ft.

Completion filings report 10 formation tops, including Santa Rosa, Rustler, Yates, Seven Rivers.

Its lease has reported 499K barrels of oil and 1.41M mcf of gas since March 2020, last reporting volume in April 2026.

Operator of record

Pioneer Natural Res. USA Inc.

Based in: Spring, TX
P-5 status: Active (A)
P-5 last filed: Jul 8, 2026
Permits on file: 15,633
Phone: (972) 444-4001

Create operator alert

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.Nov 14, 2019

8,832: total depth, ft
1: permits on file
Nov 14, 2019: last permit issued
Nov 24, 2020: completed
499K: cumulative oil, bbl
1.41M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Nov 2020 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Nov 24, 2020
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active (A)

Surface location

31.827005, -101.842893 NAD27, as filed

31.827136, -101.843300 WGS84

Google Maps ↗

Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Midland County.

Wells nearby

Withinmiles

Every well with a location on file around this well, in any state, nearest first.

Loading the map…

Open the full map →

Texas locations come from drilling permits, so most older Texas wells have none and are not listed.

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
Shackelford W40D O-10-54433	Spraberry (Trend Area) R 40 Exc	Pioneer Natural Res. USA, Inc.	1	499K	1.41M	Mar 2020 – Apr 2026

Oil, barrels lease total

Last 12 months 31,142 · prior 12 38,809(-20%)

Gas, mcf lease total

Last 12 months 233,399 · prior 12 277,670(-16%)

Chain of custody

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

1Pioneer Natural Res. USA, Inc.Nov 2020 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
858110-99	Drill	Pioneer Natural Res. USA, Inc.	Oct 16, 2019	Nov 14, 2019	Jan 1, 2020	10,325

Completions

Completed	Lease	Field	Operator	Status	Depth
Nov 24, 2020	Shackelford W40D O-10-54433	Spraberry (Trend Area) R 40 Exc	Pioneer Natural Res. USA Inc.	Producing	8,832

Formation tops

As filed on W-2/G-1. Subsea from 2,649 ft elevation.Download CSV →

Formation	MD ft	Subsea
Santa Rosa	1,076	1,573
Santa Rosa	1,098	1,551
Rustler	1,680	969
Yates	2,687	-38
Seven Rivers	3,019	-370
Seven Rivers	3,020	-371
Queen	3,555	-906
Grayburg	3,827	-1,178
Grayburg	3,828	-1,179
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	4,115	-1,466
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	4,116	-1,467
Clear ForkCLEARFORK	6,153	-3,504
Spraberry	7,086	-4,437
SpraberrySPRABERRY UPPER-DEAN	8,482	-5,833
Glorieta	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
9,074	19,055	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	1,412	17.5	1,410 S
9.625	5,483	12.25	1,125 S
5.5	19,080	6.75	1,020 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →

Suffix	RRC record date	W-2 / G-1 date	Logs referenced
00	Aug 31, 2021	May 4, 2021	Yes
00	Aug 31, 2020	Aug 5, 2020	—

Well logs

1 log loaded from the RRC's log index, 1 of it with a digital LAS file, the latest received Oct 3, 2023. Gamma ray. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.

Open the RRC's log search for this well ↗

Logas described	Files	Intervalft, as filed	Datereceived	SizeMB
Gamma RaySpans Santa Rosa, Rustler, Yates, Seven Rivers, Queen, Grayburg, San Andres, Clear Fork, Spraberry	LAS + TIFF	0 to 9,009	Oct 3, 2023	8.79 + 3.17

"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.

Find logs withinmiles of this well:List →Map →

Search the well logs loaded into Petrora →

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 42-329-43772 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-329-43772 → scanned completion filings

The logs loaded for this well are under Well logs, with the RRC's log search for it.

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 neighbors, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Shackelford W40E42-329-43773

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

Santa Rosa	1,076	1,573
Rustler	1,696	953
Yates	2,702	-53
Seven Rivers	3,027	-378
Queen	3,556	-907
Grayburg	3,831	-1,182
San Andres	4,124	-1,475
Clear Fork	6,150	-3,501

11 TOPS · FIRST 8

Shackelford W40F42-329-43774

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

Santa Rosa	1,076	1,573
Rustler	1,705	944
Yates	2,728	-79
Seven Rivers	3,036	-387
Queen	3,627	-978
Grayburg	3,851	-1,202
San Andres	4,132	-1,483
Clear Fork	6,132	-3,483

11 TOPS · FIRST 8

Shackelford W40C42-329-43771

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

Santa Rosa	1,075	1,573
Yates	2,676	-28
Seven Rivers	3,010	-362
Queen	3,395	-747
Grayburg	3,905	-1,257
San Andres	4,160	-1,512
Clear Fork	6,140	-3,492
Spraberry	7,092	-4,444

10 TOPS · FIRST 8

Shackelford W40A42-329-43769

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

Santa Rosa	1,075	1,573
Rustler	1,678	970
Yates	2,704	-56
Seven Rivers	3,018	-370
Queen	3,581	-933
Grayburg	3,912	-1,264
San Andres	4,249	-1,601
Clear Fork	6,163	-3,515

11 TOPS · FIRST 8

Shackelford E40A42-329-41212

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

Santa Rosa	1,074	1,573
Yates	2,652	-5
Seven Rivers	2,970	-323
Queen	3,654	-1,007
Grayburg	3,978	-1,331
San Andres	4,199	-1,552
Clear Fork	6,149	-3,502
Spraberry	7,099	-4,452

14 TOPS · FIRST 8

Shackelford E40B42-329-43766

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

Santa Rosa	1,074	1,573
Yates	2,653	-6
Seven Rivers	2,968	-321
Queen	3,650	-1,003
Grayburg	3,978	-1,331
San Andres	4,199	-1,552
Clear Fork	6,139	-3,492
Spraberry	7,085	-4,438

10 TOPS · FIRST 8

Shackelford E40C42-329-41224

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

Santa Rosa	1,074	1,573
Yates	1,787	860
Seven Rivers	2,970	-323
Queen	3,654	-1,007
Grayburg	3,982	-1,335
San Andres	4,187	-1,540
Clear Fork	6,132	-3,485
Spraberry	7,079	-4,432

10 TOPS · FIRST 8

Shackelford E40D42-329-43767

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

Santa Rosa	1,062	1,588
Yates	2,582	68
Seven Rivers	2,903	-253
Queen	3,543	-893
Grayburg	3,846	-1,196
San Andres	4,204	-1,554
Clear Fork	6,151	-3,501
Spraberry	7,091	-4,441

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/32943772, documented in the API reference.