WELL · 42-081-31355 · DISTRICT 7

Mariena #1

N

Coke County  · Vertical

Mariena #1 (API 42-081-31355) is a permitted well in Coke County filed by GO Opco T LLC; no completion report is on file yet.

The RRC has issued 4 drilling permits between 1985 and 2026, permitted to 6,700 ft.

Completion filings report 6 formation tops, including Jennings Limestone, Jennings, Gardner Sandstone, Odom Limestone.

Its 2 leases have reported 52.1K barrels of oil and 25.9K 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

GO Opco T LLC

Houston, TX · P-5 Y, filed Dec 4, 2025 · 1 permits on file · (832) 545-2490

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedulenone
Production reportsShiloh Oil Company LLCthrough Feb 2023
Latest permitGO Opco T LLCJul 10, 2026
6,700
total depth, ft
4
permits on file
Jul 10, 2026
last permit issued
—
completed
52.1K
cumulative oil, bbl
25.9K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
—
Shut in
—
Plugged
—

Surface location

32.073007, -100.362032

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Coke County.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Mariena O-8-23264Suggs (Ellenburger)Shiloh Oil Company LLC349.5K24.5KJan 1993 – Jul 2026
Mariena O-8-30045Suggs-Hickman (Jennings)Four C Oil & Gas Corp.12.55K1.44KApr 2008 – Jun 2011

No volumes reported on these leases in the last three years.

Chain of custody

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

  1. 1Four C Oil & Gas Corp.Jan 1993 → Aug 2011
  2. 2Moore PumpingSep 2011 → Jul 2015
  3. 3Ohlhausen Oil CompanyAug 2015 → Aug 2018
  4. 4TCS Petroleum Co., LLCSep 2018 → Jun 2020
  5. 5Shiloh Oil Company LLCJul 2020 → Feb 2023

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
916764-99ReenterGO Opco T LLCJun 26, 2026Jul 10, 2026—6,653
661099-99RecompletionFour C Oil & Gas Corp.May 2, 2008Jun 3, 2008Apr 17, 20086,653
283109-99DrillHopi, Inc.Aug 8, 1985Aug 9, 1985Oct 25, 19856,700
283107-99DrillHopi, Inc.Aug 8, 1985Aug 9, 1985—6,700

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-8-23264————
—— O-8-30045————

Formation tops

As filed on W-2/G-1. Subsea from 2,161 ft elevation.Download CSV →

FormationMD ftSubsea
Jennings Limestone5,754-3,593
Jennings5,781-3,620
Gardner Sandstone5,944-3,783
Odom Limestone6,153-3,992
CaddoCADDO LIMESTONE6,292-4,131
Ellenburger6,394-4,233

Perforations

Perforated and open-hole intervals.

FromToType
5,7575,781Perforated
6,4696,479Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.62539512.25275 S
75,6108.751,300 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 6, 2008Jun 11, 2008Yes
00Jul 10, 2008——
00Jan 21, 1986Dec 23, 1985Yes
00Jan 9, 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 →

Mariena42-081-31464

0.5 KM · Shiloh Oil Company LLC · Section with this well →

Base of Capps5,687-3,542
Jennings5,770-3,625
Gardner Sand5,852-3,707
Caddo6,288-4,143
Ellenburger6,388-4,243

Esther Davis42-081-31350

0.6 KM · TCS Petroleum Co., LLC · Section with this well →

Coleman Junction3,000-851
Cisco3,610-1,461
Odom5,992-3,843
Caddo6,075-3,926
Ellenburger6,411-4,262
Wolfcamp—
Strawn—
Canyon—

11 TOPS · FIRST 8

Davis, Esther42-081-31327

0.8 KM · TCS Petroleum Co., LLC · Section with this well →

T/Odom5,989-3,842
Odom5,989-3,842
T/Caddo6,084-3,937
Caddo6,084-3,937
T/Ellenburger6,418-4,271
Ellenburger6,418-4,271

Lewis, J.42-353-33675

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

Wichita-Albany2,258-135
Elm Creek - Disposal2,538-415
Wolfcamp2,605-482
Coleman Junction2,856-733
Noodle Creek - Disposal3,342-1,219
Flippen Sand - Disposal—
Flippen Lime - Disposal—
Breckenridge - Disposal—

10 TOPS · FIRST 8

Lewis, J.42-353-31651

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

Wichita-Albany2,258-128
Elm Creek2,538-408
Wolfcamp2,605-475
Coleman Junction2,856-726
Noodle Creek3,342-1,212
Cisco3,879-1,749
Canyon4,510-2,380
Goen5,580-3,450

12 TOPS · FIRST 8

Ware, J.G.42-081-31439

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

Gardner5,908-3,673
Odom6,062-3,827
Caddo6,310-4,075
Ellenburger6,553-4,318

Ruby Hermanson42-353-31640

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

Saddle Creek3,601-1,488
Saddke Creej3,601-1,488
Maryneal, Couth (Canyon)5,110-2,997
Suggs-Hickman (Jennings)5,680-3,567
Strawn5,823-3,710
Caddo6,100-3,987
Ellenburger6,347-4,234

Jordon Ranch42-353-31336

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

Base Dothan3,320-1,177
Strawn5,415-3,272
Goen5,623-3,480
Caddo6,176-4,033
Ellenburger6,398-4,255

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.

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