WELL · 42-481-35026 · DISTRICT 3
Cockburn State Yegua Unit #189
Wharton County · Magnet Withers (Martinez SD) field · Vertical
Cockburn State Yegua Unit #189 (API 42-481-35026) is a well in Wharton County operated by Milagro Exploration LLC, completed November 10, 2008.
The RRC has issued 4 drilling permits (amended once) between 2008 and 2014, permitted to 15,500 ft.
Completion filings report 3 formation tops, including Miocene (undifferentiated), Frio, Vicksburg.
Its 3 leases have reported 6.55M barrels of oil and 14.8M mcf of gas since January 1993, last reporting in July 2026. The leases carry 145 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Aug 7, 2015 · 231 permits on file · (877) 415-8112
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Milagro Exploration LLC |
| Production reports | Orx Resources, L.L.C.through Apr 2026 |
| Latest permit | Milagro Exploration, LLCMar 4, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 15,500
- total depth, ft
- 5
- permits on file
- Mar 4, 2014
- last permit issued
- Nov 10, 2008
- completed
- 6.55M
- cumulative oil, bbl
- 14.8M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 10, 2008
- Shut in
- —
- Plugged
- —
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 3 leases this well is completed on; they carry 145 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cockburn, H. C. O-3-2899 | Magnet Withers | Orx Resources, L.L.C. | 143 | 6.54M | 5.82M | Jan 1993 – Jul 2026 |
| Cockburn State Yegua Unit O-3-25786 | Magnet Withers (Frio Cons.) | Milagro Exploration, LLC | 1 | 6.44K | 5.63K | Jul 2011 – Dec 2014 |
| Cockburn State Yegua Unit G-3-245421 | Prasifka (Yegua) | Milagro Exploration, LLC | 1 | 0 | 8.99M | Nov 2008 – Jul 2011 |
Oil, barrels lease total
Last 12 months 91,244 · prior 12 85,228(+7%)
Gas, mcf lease total
Last 12 months 6,535 · prior 12 4,502(+45%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Exxon Corp.Jan 1993 → Mar 2000
- 2Exxon Mobil CorporationApr 2000 → Dec 2005
- 3KCS Resources, Inc.Jan 2006 → Nov 2007
- 4Milagro Exploration, LLCDec 2007 → Oct 2015
- 5White Oak Operating Company LLCNov 2015 → Apr 2023
- 6Orx Resources, L.L.C.May 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 777690-99 | Recompletion | Milagro Exploration, LLC | Jan 20, 2014 | Mar 4, 2014 | Jan 14, 2014 | 6,500 |
| 720438-99 | Recompletion | Milagro Exploration, LLC | Jul 18, 2011 | Jul 27, 2011 | Jul 26, 2011 | 6,500 |
| 681781-99 | Field transfer | Milagro Exploration, LLC | Jun 3, 2009 | Jun 3, 2009 | Sep 8, 2008 | 15,500 |
| 667291-98 | Drill | Milagro Exploration, LLC | Jan 8, 2009 | Aug 9, 2008 | Sep 8, 2008 | 15,500 |
| 667291-99 | Drill | Milagro Exploration, LLC | Jul 22, 2008 | Aug 9, 2008 | Sep 8, 2008 | 15,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-245421 | — | — | — | — |
| — | — O-3-2899 | — | — | — | — |
| — | — O-3-25786 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 67 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)UPPER MIOCENE | 3,800 | -3,733 |
| Frio | 5,481 | -5,414 |
| Vicksburg | 7,683 | -7,616 |
| Frio | 54,481 | -54,414 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,491 | 5,493 | Perforated |
| 5,492 | 5,502 | Perforated |
| 5,496 | 5,500 | Perforated |
| 5,732 | 5,736 | Perforated |
| 13,566 | 13,580 | Perforated |
| 13,591 | 13,594 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 3,510 | 17.5 | 3,230 S |
| 5 | 6,117 | 6.75 | 850 S |
| 9.625 | 8,138 | 12.25 | 1,290 S |
| 7.625 | 12,800 | 8.5 | 415 S |
| 5 | 14,500 | 6.75 | 850 S |
| 4.5 | 14,500 | 6.75 | 850 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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 28, 2020 | Dec 12, 2019 | — |
| 00 | Dec 31, 2014 | Jul 10, 2014 | — |
| 00 | May 30, 2012 | Aug 9, 2011 | — |
| 00 | Apr 14, 2010 | Nov 9, 2009 | — |
| 00 | Oct 26, 2009 | Aug 19, 2009 | — |
| 00 | Oct 2, 2009 | Jun 10, 2009 | Yes |
| 00 | Mar 23, 2009 | Jan 20, 2009 | Yes |
| 00 | Mar 7, 2009 | — | — |
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.
- Wellbore filings for 42-481-35026 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-481-35026 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
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/48135026, documented in the API reference.