Petrora

WELL · 42-173-31917 · DISTRICT 8

Thomason #1

N

Glasscock County · Saint Lawrence (Strawn) field  · Vertical

Thomason #1 (API 42-173-31917) is a well in Glasscock County operated by Endeavor Energy Resources L.P., completed July 1, 1999.

The RRC has issued 4 drilling permits between 1985 and 2018, permitted to 12,000 ft.

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

Its 4 leases have reported 43.9K barrels of oil and 478K mcf of gas since January 1993, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.

Operator of record

Endeavor Energy Resources L.P.

Midland, TX · P-5 Y, filed Apr 4, 2026 · 6,190 permits on file · (855) 247-5920

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleEndeavor Energy Resources L.P.
Production reportsDiamondback E&P LLCthrough Sep 2025
Latest permitEndeavor Energy Resources L.P.Feb 13, 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
4
permits on file
Feb 13, 2018
last permit issued
Jul 1, 1999
completed
43.9K
cumulative oil, bbl
478K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Jul 1, 1999
Shut in
—
Plugged
—

Surface location

31.741520, -101.558603

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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Thomason, W. A. G-10-182140Dewey Lake (Atoka)Diamondback E&P LLC1081.7KMar 2001 – Jul 2026
Thomason, W. A. O-10-39782Spraberry (Trend Area)Diamondback E&P LLC136.3K84.3KNov 2009 – Jul 2026
Thomason O-10-30531Saint Lawrence (Strawn)Endeavor Energy Resources L.P.17.26K231KJan 1993 – May 2005
Thomason, W. A. O-10-36451Dewey Lake (Atoka)Endeavor Energy Resources L.P.128181.5KFeb 2000 – Aug 2003

Oil, barrels lease total

Last 12 months 254 · prior 12 1,330(-81%)

0100200300202420252026

Gas, mcf lease total

Last 12 months 0 · prior 12 651(-100%)

0100200202420252026

Chain of custody

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

  1. 1Brown, George R. Partnership,theJan 1993 → Oct 1997
  2. 2Stephens, Autry C.Nov 1997 → Feb 2000
  3. 3Endeavor Energy Resources L.P.Feb 2000 → Jun 2020
  4. 4Diamondback E&P LLCJul 2020 → Sep 2025

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
834457-99RecompletionEndeavor Energy Resources L.P.Dec 19, 2017Feb 13, 2018—10,576
684332-99RecompletionEndeavor Energy Resources L.P.Aug 20, 2009Aug 21, 2009Mar 26, 200912,000
481631-99RecompletionStephens, Autry C.Dec 18, 1998Dec 21, 1998Jun 7, 199810,650
291379-99DrillHighland Resources, Inc.Dec 16, 1985Nov 27, 1985—10,300

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-10-182140————
—— O-10-30531————
—— O-10-36451————
—— O-10-39782————

Formation tops

As filed on W-2/G-1. Subsea from 2,676 ft elevation.Download CSV →

FormationMD ftSubsea
Spraberry6,245-3,569
Jo Mill7,103-4,427
Dean7,691-5,015
Wolfcamp7,872-5,196
Strawn9,954-7,278
Strawn10,000-7,324
Atoka——

Perforations

Perforated and open-hole intervals.

FromToType
6,2629,881Perforated
6,26210,147Perforated
9,9549,958Perforated
9,9639,969Perforated
10,00010,012Perforated
10,02810,147Perforated
10,20110,252Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.37543017.5420 S
9.6253,11512.25540 S
5.56,0287.875515 S
5.56,0288.75515 S
5.510,0608.75750 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
00May 17, 2018Apr 2, 2018—
00Jun 15, 2010Mar 11, 2010Yes
00Apr 7, 2010——
00Jul 2, 2001Apr 3, 2001—
00May 23, 2001May 2, 2000Yes
00May 10, 2001——
00Dec 15, 2000Jul 27, 1999—
00Oct 6, 1999Jul 27, 1999—
00Mar 10, 1986Feb 24, 1986Yes
00Mar 5, 1986——

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). 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 →

Tetris SN 1-48 0142-173-37975

1.6 KM · Energen Resources Corporation · Section with this well →

Santa Rosa6741,990
Yates1,844820
Seven Rivers2,019645
Queen2,198466
Grayburg2,788-124
San Andres3,059-395
Glorieta3,754-1,090
Clear Fork4,662-1,998

10 TOPS · FIRST 8

Tetris SN 1-48 0142-173-37976

1.6 KM · Energen Resources Corporation · Section with this well →

Queen2,195469
Grayburg2,786-122
San Andres3,071-407
Glorieta3,762-1,098
Clear Fork3,762-1,098
Wichita-Albany7,346-4,682
Dean7,698-5,034
Wolfcamp7,882-5,218

10 TOPS · FIRST 8

Cutlass 12-13 A42-173-39096

1.7 KM · Diamondback E&P LLC · Section with this well →

Yates1,2751,383
Seven Rivers2,033625
Queen2,251407
Grayburg2,798-140
San Andres2,983-325
Glorieta4,113-1,455
Clear Fork4,675-2,017
Spraberry6,250-3,592

10 TOPS · FIRST 8

Cutlass 12-13 B42-173-39097

1.7 KM · Diamondback E&P LLC · Section with this well →

Yates1,901756
Seven Rivers2,037620
Queen2,245412
Grayburg2,798-141
San Andres2,977-320
Glorieta4,091-1,434
Clear Fork4,668-2,011
Spraberry6,238-3,581

10 TOPS · FIRST 8

Cutlass 12-13 C42-173-39098

1.7 KM · Diamondback E&P LLC · Section with this well →

Yates1,889768
Seven Rivers2,033624
Queen2,250407
Grayburg2,795-138
San Andres2,976-319
Glorieta4,068-1,411
Clear Fork4,630-1,973
Spraberry6,222-3,565

10 TOPS · FIRST 8

Tetris SN 1-48 0342-173-37984

1.7 KM · Energen Resources Corporation · Section with this well →

Santa Rosa6661,991
Yates1,825832
Seven Rivers2,002655
Queen2,183474
Glorieta3,742-1,085
Rustler—

Tetris SN 1-48 0342-173-37986

1.7 KM · Energen Resources Corporation · Section with this well →

Santa Rosa6811,976
Yates1,828829
Seven Rivers2,001656
Queen2,180477
Glorieta3,737-1,080
Rustler—

Sherminator 12-13 A42-173-39126

2.1 KM · Black Swan Opco, LLC · Section with this well →

Yates1,789-1,764
San Andres2,679-2,654
Grayburg3,079-3,054
Clear Fork4,608-4,583
Spraberry7,256-7,231
Rustler—
Queen—
Santa Rosa—

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/17331917, documented in the API reference.