WELL · 42-427-33492 · DISTRICT 4
Margo #3A
Starr County · Arroyo Grande W. (Cook Mt.) field · Vertical
Margo #3A (API 42-427-33492) is a well in Starr County operated by Newgulf Petroleum LLC, completed July 1, 2002.
The RRC has issued 2 drilling permits (amended once) between 2002 and 2014, permitted to 3,800 ft.
Completion filings report 9 formation tops, including Crockett, Cook Mountain, Jackson, Queen City.
Its 3 leases have reported 200 barrels of oil and 433K mcf of gas since July 2002, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
San Antonio, TX · P-5 Y, filed Aug 4, 2017 · 58 permits on file · (210) 260-8269
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Newgulf Petroleum LLC |
| Production reports | Starr Operating, LLCthrough Apr 2026 |
| Latest permit | Newgulf Petroleum, LLCDec 16, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,800
- total depth, ft
- 3
- permits on file
- Dec 16, 2014
- last permit issued
- Jul 1, 2002
- completed
- 200
- cumulative oil, bbl
- 433K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2002 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 1, 2002
- 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Margo 'A' G-4-276029 | Margo (C- 2200) | Starr Operating, LLC | 1 | 0 | 125K | Sep 2014 – Jul 2026 |
| Margo "A" O-4-13784 | Arroyo Grande, W. (Cook Mt.) | Starr Operating, LLC | 1 | 200 | 149 | Jul 2013 – Jul 2026 |
| Margo G-4-189892 | Arroyo Grande, W. (Cook Mt.) | Newgulf Petroleum, LLC | 1 | 0 | 308K | Jul 2002 – Aug 2014 |
Gas, mcf lease total
Last 12 months 3,994 · prior 12 5,649(-29%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Newgulf Petroleum, LLCJul 2002 → Sep 2017
- 2Starr Operating, LLCOct 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 801605-99 | Recompletion | Newgulf Petroleum, LLC | Dec 11, 2014 | Dec 16, 2014 | Aug 26, 2014 | 3,800 |
| 520682-98 | Drill | Newgulf Petroleum, LLC | Jun 20, 2002 | Jun 5, 2002 | Jun 12, 2002 | 3,800 |
| 520682-99 | Drill | Newgulf Petroleum, LLC | Jun 5, 2002 | Jun 5, 2002 | — | 3,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-189892 | — | — | — | — |
| — | — G-4-276029 | — | — | — | — |
| — | — O-4-13784 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 430 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Crockett | 1,880 | -1,450 |
| Cook Mountain | 1,929 | -1,499 |
| JacksonJACKSON - INJECTION/DISPOSAL | 2,238 | -1,808 |
| Cook Mountain | 2,500 | -2,070 |
| Queen City | 3,500 | -3,070 |
| Queen CityQUEEN CITY - INJECTION/DISPOSAL | 3,737 | -3,307 |
| CatahoulaCATAHOULA-ANAHUAC - INJECTION/DI | — | — |
| CatahoulaCATAHOULA-FRIO - INJECTION/DISPO | — | — |
| Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE - INJEC | — | — |
| VicksburgVICKSBURG - INJECTION/DISPOSAL; | — | — |
| Wilcox | — | — |
| Yegua | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,238 | 2,252 | Perforated |
| 2,852 | 2,859 | Perforated |
| 2,890 | 2,903 | Perforated |
| 2,903 | 2,908 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 981 | 12.25 | 445 S |
| 4.5 | 3,110 | 7.875 | 418 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 | Mar 23, 2015 | Jan 12, 2015 | — |
| 00 | Oct 31, 2013 | Aug 21, 2013 | Yes |
| 00 | Sep 5, 2002 | Aug 5, 2002 | Yes |
| 00 | Aug 13, 2002 | — | — |
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 42-427-33492 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-427-33492 → 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/42733492, documented in the API reference.