TEXAS · WELLS · WHARTON COUNTY · API 42-481-32439 · DISTRICT 03

Cockburn H. C. #121

Shut in

Wharton County · Magnet Withers (Marginulina 2) field · Temp Abandoned  · Vertical

Cockburn H. C. #121 (API 42-481-32439) is a well in Wharton County operated by Orx Resources L.L.C., completed July 22, 2016 and listed as temp abandoned on the RRC schedule, shut in September 1, 2017.

The RRC has issued 3 drilling permits between 1983 and 2008, permitted to 5,650 ft.

It was permitted by Milagro Exploration, LLC and has since transferred to Orx Resources L.L.C. on the wellbore schedule.

Completion filings report 5 formation tops, including Anahuac, Heterostegina, Marginulina 1, Marginulina 2.

Its 2 leases have reported 6.54M barrels of oil and 5.86M mcf of gas since January 1993, last reporting in July 2026. The leases carry 144 wells, so these are lease totals, not this well alone.

Operator of record

Orx Resources L.L.C.

Permitted by Milagro Exploration, LLC; the EWA schedule now lists a different operator.

Based in
Houston, TX
P-5 status
Active (A)
P-5 last filed
Sep 2, 2025
Permits on file
1
Phone
(346) 444-3320

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleOrx Resources L.L.C.
Production reportsOrx Resources, L.L.C.through Apr 2026
Latest permitMilagro Exploration, LLCSep 6, 2008

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

5,650
total depth, ft
3
permits on file
Sep 6, 2008
last permit issued
Jul 22, 2016
completed
6.54M
cumulative oil, bbl
5.86M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jul 22, 2016
Shut in
Sep 1, 2017
Plugged
—

Operator's P-5 on the schedule: Active – Extension (X)

Surface location

No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.

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 144 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Cockburn, H. C. G-3-242378Magnet Withers (Marginulina 2)Orx Resources, L.L.C.1039.6KJun 2008 – Jul 2026
Cockburn, H. C. O-3-2899Magnet WithersOrx Resources, L.L.C.1436.54M5.82MJan 1993 – Jul 2026

Oil, barrels lease total

Last 12 months 91,244 · prior 12 85,228(+7%)

05K10K202420252026

Gas, mcf lease total

Last 12 months 6,535 · prior 12 4,502(+45%)

02K4K6K202420252026

Chain of custody

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

  1. 1Exxon Corp.Jan 1993 → Mar 2000
  2. 2Exxon Mobil CorporationApr 2000 → Dec 2005
  3. 3KCS Resources, Inc.Jan 2006 → Nov 2007
  4. 4Milagro Exploration, LLCDec 2007 → Oct 2015
  5. 5White Oak Operating Company LLCNov 2015 → Apr 2023
  6. 6Orx Resources, L.L.C.May 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
669277-99RecompletionMilagro Exploration, LLCAug 18, 2008Sep 6, 2008May 27, 20085,450
616360-99RecompletionKCS Resources, Inc.Mar 23, 2006Mar 29, 2006—5,450
190035-99DrillExxon Corp.Mar 15, 1983Mar 15, 1983Apr 9, 19836,150

Completions

CompletedLeaseFieldOperatorStatusDepth
Jul 22, 2016Cockburn H. C. G-3-242378Magnet Withers (Marginulina 2)Orx Resources L.L.C.Temp Abandoned · shut in Sep 1, 20175,650
Apr 14, 1983Cockburn H. C. O-3-2899Magnet WithersOrx Resources L.L.C.Not on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 85 ft elevation.Download CSV →

FormationMD ftSubsea
Anahuac4,880-4,795
Heterostegina5,083-4,998
Marginulina 15,423-5,338
Marginulina 25,459-5,374
FrioFRIO 15,494-5,409
FrioFRIO 2 EAST5,626-5,541

Perforations

Perforated and open-hole intervals.

FromToType
5,4085,420Perforated
5,4595,470Perforated
5,4945,499Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6251,57612.251,754 S
2.3755,320——
5.55,6528.75619 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
00Sep 7, 2016Aug 9, 2016—
00Dec 8, 2008Aug 20, 2008Yes
00Nov 24, 2008——
00Jan 12, 1984Jun 29, 1983—

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.

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

0
bbl, last 12 reported months
0
bbl, all reported
Jun 2025
reported through
UICKindStatusPermitted bbl/dMax psiZone ft
000103367H-1 InjectionNot activated12,0002,5005,170–5,620

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

Last 12 months 0 · prior 12 0

0120242025

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/48132439, documented in the API reference.