TEXAS · WELLS · MIDLAND COUNTY · SHACKELFORD E40B LEASE · API 42-329-43766 · DISTRICT 7B

Shackelford E40B #102H

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

Shackelford E40b #102H (API 42-329-43766) is a horizontal well in Midland County operated by Pioneer Natural Res. USA Inc., completed October 19, 2020 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued November 14, 2019, permitted to 8,813 ft.

Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.

Its lease has reported 421K barrels of oil and 1.56M mcf of gas since April 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

8,813: total depth, ft
1: permits on file
Nov 14, 2019: last permit issued
Oct 19, 2020: completed
421K: cumulative oil, bbl
1.56M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2020 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Oct 19, 2020
Shut in: —
Plugged: —

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

Surface location

31.827909, -101.839415 NAD27, as filed

31.828041, -101.839822 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 E40B O-10-54546	Spraberry (Trend Area) R 40 Exc	Pioneer Natural Res. USA, Inc.	1	421K	1.56M	Apr 2020 – Apr 2026

Gas, mcf lease total

Last 12 months 182,747 · prior 12 250,396(-27%)

Oil, barrels lease total

Last 12 months 17,950 · prior 12 21,828(-18%)

Chain of custody

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

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

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
858081-99	Drill	Pioneer Natural Res. USA, Inc.	Oct 16, 2019	Nov 14, 2019	Jan 13, 2020	10,325

Completions

Completed	Lease	Field	Operator	Status	Depth
Oct 19, 2020	Shackelford E40B O-10-54546	Spraberry (Trend Area) R 40 Exc	Pioneer Natural Res. USA Inc.	Producing	8,813

Formation tops

As filed on W-2/G-1. Subsea from 2,647 ft elevation.Download CSV →

Formation	MD ft	Subsea
Santa Rosa	1,074	1,573
Santa Rosa	1,090	1,557
Yates	2,653	-6
Yates	2,654	-7
Seven Rivers	2,968	-321
Queen	3,650	-1,003
Queen	3,651	-1,004
Grayburg	3,978	-1,331
Grayburg	3,979	-1,332
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	4,199	-1,552
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	4,200	-1,553
Clear ForkCLEARFORK	6,139	-3,492
Spraberry	7,085	-4,438
SpraberrySPRABERRY UPPER-DEAN	8,468	-5,821
Glorieta	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
8,941	18,922	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	1,429	17.5	1,400 S
9.625	5,408	12.25	1,173 S
5.5	18,957	6.75	912 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	Jan 20, 2021	Jan 4, 2021	—
00	Sep 15, 2020	Aug 24, 2020	Yes

Well logs

1 log loaded from the RRC's log index, the latest received Aug 24, 2020. Cement bond. 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
Cement BondSpans Santa Rosa, Yates, Seven Rivers, Queen, Grayburg, San Andres, Clear Fork, Spraberry	TIFF	0 to 9,023	Aug 24, 2020	27.8

"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 42-329-43766 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-329-43766 → 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 E40C42-329-41224

0.0 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 E40A42-329-41212

0.0 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 E40D42-329-43767

0.3 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

Shackelford W40F42-329-43774

0.3 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 E40E42-329-41225

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

Santa Rosa	1,064	1,586
Yates	2,564	86
Seven Rivers	2,889	-239
Queen	3,521	-871
Grayburg	3,823	-1,173
San Andres	4,278	-1,628
Clear Fork	6,129	-3,479
Spraberry	7,079	-4,429

10 TOPS · FIRST 8

Shackelford W40E42-329-43773

0.3 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 E40F42-329-43768

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

Santa Rosa	1,060	1,590
Yates	2,564	86
Seven Rivers	2,831	-181
Queen	3,499	-849
Grayburg	3,831	-1,181
San Andres	4,192	-1,542
Clear Fork	6,124	-3,474
Spraberry	7,084	-4,434

10 TOPS · FIRST 8

Shackelford W40D42-329-43772

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

Santa Rosa	1,076	1,573
Rustler	1,680	969
Yates	2,687	-38
Seven Rivers	3,019	-370
Queen	3,555	-906
Grayburg	3,827	-1,178
San Andres	4,115	-1,466
Clear Fork	6,153	-3,504

11 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/32943766, documented in the API reference.