WELL · 42-317-34519 · DISTRICT 8

Thomas 4 #1

Plugged

Martin County · Spraberry (Trend Area) field  · Vertical

Thomas 4 #1 (API 42-317-34519) is a plugged well in Martin County, plugged March 24, 2021, last operated by Diamondback E&P LLC.

The RRC has issued 2 drilling permits between 2005 and 2018, permitted to 12,000 ft.

It was permitted by Endeavor Energy Resources L.P. and has since transferred to Diamondback E&P LLC on the wellbore schedule.

Completion filings report 6 formation tops, including Spraberry, Dean, Wolfcamp, Strawn.

Its lease has reported 94.6K barrels of oil and 97.7K mcf of gas since June 2005, last reporting in June 2026. The lease carries 2 wells, so these are lease totals, not this well alone.

Operator of record

Diamondback E&P LLC

Permitted by Endeavor Energy Resources L.P.; the EWA schedule now lists a different operator.

Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,237 permits on file · (855) 247-5920

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleDiamondback E&P LLC
Production reportsDiamondback E&P LLCthrough Apr 2026
Latest permitEndeavor Energy Resources L.P.Jul 6, 2018

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

12,000
total depth, ft
2
permits on file
Jul 6, 2018
last permit issued
Jun 9, 2005
completed
94.6K
cumulative oil, bbl
97.7K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jun 2005 THROUGH Jun 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Jun 9, 2005
Shut in
—
Plugged
Mar 24, 2021

Surface location

32.376325, -101.832619

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Martin 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; they carry 2 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Thomas "4" O-10-37590Spraberry (Trend Area)Diamondback E&P LLC294.6K97.7KJun 2005 – Jun 2026

Oil, barrels lease total

Last 12 months 198 · prior 12 1,111(-82%)

050100150202420252026

Gas, mcf lease total

Last 12 months 422 · prior 12 1,398(-70%)

0100200300202420252026

Chain of custody

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

  1. 1Endeavor Energy Resources L.P.Jul 2005 → Dec 2024
  2. 2Diamondback E&P LLCJan 2025 → Jul 2025

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
842062-99RecompletionEndeavor Energy Resources L.P.Jul 5, 2018Jul 6, 2018Mar 9, 200511,100
556414-99DrillEndeavor Energy Resources L.P.Jan 19, 2005Jan 21, 2005Mar 14, 200512,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-10-37590————

Formation tops

As filed on W-2/G-1. Subsea from 2,623 ft elevation.Download CSV →

FormationMD ftSubsea
SpraberryUPPER SPRABERRY7,125-4,502
SpraberryUPPER SPRAYBERRY7,125-4,502
SpraberryLOWER SPRABERRY7,625-5,002
SpraberryLOWER SPRAYBERRY7,625-5,002
Dean8,450-5,827
WolfcampUPPER WOLFCAMP8,900-6,277
Strawn10,025-7,402
MississippianMISSISSIPPIAN LIME11,025-8,402
Atoka——

Perforations

Perforated and open-hole intervals.

FromToType
7,12310,014Perforated
7,12310,422Open hole

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
12.7535217.5190 S
8.6254,74111426 S
4.511,0977.8751,470 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
00Aug 23, 2018Jul 26, 2018—
00Mar 6, 2006Aug 29, 2005Yes
00Dec 6, 2005——

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 →

Merrick Unit 242-317-41520

0.1 KM · XTO Energy Inc. · Section with this well →

Santa Rosa1,0051,619
Yates2,244380
Queen3,379-755
Grayburg3,614-990
San Andres3,668-1,044
Spraberry7,137-4,513
Dean8,475-5,851
Wolfcamp8,666-6,042

10 TOPS · FIRST 8

Merrick Unit 242-317-41519

0.2 KM · XTO Energy Inc. · Section with this well →

Santa Rosa9971,627
Yates2,241383
Queen3,367-743
Grayburg3,611-987
San Andres3,656-1,032
Clear Fork5,635-3,011
Spraberry7,129-4,505
Dean—

10 TOPS · FIRST 8

Merrick Unit 242-317-41523

0.2 KM · XTO Energy Inc. · Section with this well →

Santa Rosa1,0001,624
Yates2,236388
Queen3,362-738
Grayburg3,600-976
San Andres3,648-1,024
Spraberry7,632-5,008
Cisco—
Pennsylvanian—

10 TOPS · FIRST 8

Merrick Unit 242-317-41518

0.2 KM · XTO Energy Inc. · Section with this well →

Santa Rosa9861,639
Yates2,239386
Queen3,362-737
Grayburg3,594-969
San Andres3,654-1,029
Spraberry7,118-4,493
Dean8,453-5,828
Wolfcamp8,647-6,022

10 TOPS · FIRST 8

Merrick Unit 242-317-41524

0.2 KM · XTO Energy Inc. · Section with this well →

Santa Rosa1,0471,577
Yates2,281343
Queen3,407-783
Grayburg3,645-1,021
San Andres3,693-1,069
Spraberry7,178-4,554
Dean8,452-5,828
Wolfcamp8,679-6,055

10 TOPS · FIRST 8

Merrick Unit 242-317-41576

0.2 KM · XTO Energy Inc. · Section with this well →

Santa Rosa9941,630
Yates2,233391
Queen3,359-735
Grayburg3,597-973
San Andres3,645-1,021
Spraberry7,127-4,503
Dean—
Wolfcamp—

10 TOPS · FIRST 8

Merrick Unit 242-317-41516

0.3 KM · XTO Energy Inc. · Section with this well →

Santa Rosa9841,640
Yates2,227397
Queen3,362-738
Grayburg3,594-970
San Andres3,645-1,021
Spraberry7,130-4,506
Cisco—
Dean—

10 TOPS · FIRST 8

Merrick Unit 242-317-41515

0.3 KM · XTO Energy Inc. · Section with this well →

Santa Rosa9931,630
Yates2,229394
Queen3,364-741
Grayburg3,593-970
San Andres3,647-1,024
Spraberry7,136-4,513
Dean8,450-5,827
Wolfcamp8,654-6,031

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/31734519, documented in the API reference.