WELL · 42-353-32231 · DISTRICT 7

Group 4000 Unit A #15A

Y

Nolan County · Group (4000) field · Shut IN  · Vertical

Group 4000 Unit A #15A (API 42-353-32231) is a well in Nolan County operated by Winchester Energy LLC, completed November 4, 2022 and listed as shut in on the RRC schedule.

The RRC has issued 2 drilling permits between 1993 and 2023, permitted to 4,200 ft.

Completion filings report 3 formation tops, including Flippen, Flippen Cook Lime, Cisco.

Its lease has reported 249K barrels of oil and 167K mcf of gas since January 1993, last reporting in July 2026. The lease carries 16 wells, so these are lease totals, not this well alone.

It holds an active disposal or injection permit; TexNet located 0 M2+ earthquakes within 10 km over the last two years.

Operator of record

Winchester Energy LLC

Houston, TX · P-5 Y, filed Dec 4, 2025 · 47 permits on file · (832) 229-2957

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleWinchester Energy LLC
Production reportsWinchester Energy, LLCthrough Oct 2024
Latest permitWinchester Energy, LLCNov 13, 2023
4,200
total depth, ft
2
permits on file
Nov 13, 2023
last permit issued
Nov 4, 2022
completed
249K
cumulative oil, bbl
167K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Nov 4, 2022
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active

Surface location

32.189118, -100.384162

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Nolan 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 16 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Group 4000 Unit "A" O-8-25971Group (4000)Winchester Energy, LLC16249K167KJan 1993 – Jul 2026

Oil, barrels lease total

Last 12 months 0 · prior 12 38(-100%)

0100200300202420252026

Chain of custody

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

  1. 1O & G Energy, Inc.Jan 1993 → Oct 1996
  2. 2F&H Energy,ltd.Nov 1996 → Jun 1997
  3. 3Robertson Resources, Inc.Jul 1997 → Aug 2001
  4. 4Xeric Oil & Gas CorporationSep 2001 → Nov 2003
  5. 5Alegre Energy, Inc.Dec 2003 → May 2006
  6. 6Alegre Energy Operating, LPNov 2004 → Sep 2005
  7. 7Delco Operating Company LPJun 2006 → Jun 2007
  8. 8Midwestern EnergyJul 2007 → Apr 2015
  9. 9W & W Production, LLCMay 2015 → Jul 2017
  10. 10Winchester Energy, LLCDec 2022 → Oct 2024

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
895007-99ReclassWinchester Energy, LLCNov 1, 2023Nov 13, 2023—4,200
411940-99DrillO & G Energy, Inc.May 20, 1993May 25, 1993Dec 15, 19934,200

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-8-25971————

Formation tops

As filed on W-2/G-1. Subsea from 2,325 ft elevation.Download CSV →

FormationMD ftSubsea
Flippen3,980-1,655
Flippen Cook Lime3,981-1,656
Cisco4,020-1,695

Perforations

Perforated and open-hole intervals.

FromToType
3,9813,991Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
8.62522012.25103 S
7.8754,1945.5345 S
5.54,1947.875445 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
00Mar 22, 2024Feb 21, 2024—
00Nov 3, 2015Jun 29, 2015—
00Mar 3, 1994Jan 10, 1994Yes
00Feb 3, 1994——

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 →

Cochran, J.H. 'A'42-353-31745

1.2 KM · Sun Expl. & Prod. Co.-Abilene · Section with this well →

Gardener6,241-3,835
Caddo6,553-4,147
Ellen6,752-4,346

Cochran, J.H. 'A'42-353-31744

1.3 KM · Sun Expl. & Prod. Co.-Abilene · Section with this well →

Canyon4,394-2,117
Caddo6,413-4,136
Ellenburger6,585-4,308

Chapman42-353-32070

1.6 KM · W & W Production, LLC · Section with this well →

Group 40004,018-1,769
Strawn5,734-3,485
Strawn6,034-3,785
Odom Lime6,274-4,025
Caddo6,372-4,123
Caddo6,432-4,183
Ellenburger6,548-4,299

Cochran 'C'42-353-31729

2.1 KM · Goodrock Natural Resources, LLC · Section with this well →

Noodle Creek3,492-1,263
Saddle Creek3,835-1,606
Cisco4,136-1,907
Canyon5,198-2,969
Strawn5,475-3,246
T/Odom Lime6,230-4,001
Odom Lime6,230-4,001
Caddo6,390-4,161

9 TOPS · FIRST 8

Cochran 'A'42-353-31755

3.3 KM · Union Texas Petroleum Corp. · Section with this well →

Coleman Junction2,945-696
Goen5,666-3,417
Gardner5,955-3,706
Odom6,276-4,027
Caddo6,374-4,125
Ellenburger6,388-4,139

Cochran42-353-31773

3.5 KM · Union Texas Petroleum Corp. · Section with this well →

Coleman Junction3,033-746
Goen5,742-3,455
Gardner5,998-3,711
Odom6,249-3,962
Caddo6,440-4,153

Cochran42-353-31583

3.7 KM · Wes-Tex Drlg. Co. · Section with this well →

Noodle Creek3,466-1,215
Saddle Creek3,784-1,533
Cisco3,983-1,732
Cisco4,458-2,207
B/Reef5,550-3,299
T/Caddo6,300-4,049
T/Ellenburger6,510-4,259

Killgore42-353-33704

4.0 KM · Midland Oil and Gas, Inc. · Section with this well →

Coleman Junction3,474-1,035
Noodle Creek - Disposal3,900-1,461
Saddle Creek4,103-1,664
Breckenridge - Disposal4,330-1,891
Canyon5,124-2,685
Cline5,922-3,483
Strawn6,000-3,561
Wolfcamp—

16 TOPS · FIRST 8

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

0
bbl, last 12 reported months
4.13K
bbl, all reported
Nov 2023
reported through
UICKindStatusPermitted bbl/dMax psiZone ft
000099845H-1 InjectionActive9006003,981–3,991

MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS

Last 12 months 0 · prior 12 0

0120222023

TexNet catalog via USGS

Seismicity near this well

0
M2+ events within 10 km, last 2 years
—
largest

A proximity count, not an attribution. How to read it →

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/35332231, documented in the API reference.