WELL · 42-311-32014 · DISTRICT 1
S.T.S. -E- #503
McMullen County · Big Mule (5500 Sand) field · Vertical
S.T.S. -E- #503 (API 42-311-32014) is a plugged well in Mcmullen County, plugged June 27, 2025, last operated by Central Gulf Petroleum Inc.
The RRC has issued one drilling permit, issued February 6, 1984, permitted to 6,000 ft.
It was permitted by Petrolero Corp. and has since transferred to Central Gulf Petroleum Inc on the wellbore schedule.
Completion filings report 4 formation tops, including Queen City, Carrizo, Wilcox, Mula.
Operator of record
Permitted by Petrolero Corp.; the EWA schedule now lists a different operator.
The Woodlands, TX · P-5 Y, filed Apr 4, 2026 · 10 permits on file · (512) 595-6469
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Central Gulf Petroleum Inc |
| Production reports | CXL Energy LLCthrough Aug 2021 |
| Latest permit | Petrolero Corp.Feb 6, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,000
- total depth, ft
- 1
- permits on file
- Feb 6, 1984
- last permit issued
- Apr 24, 1984
- completed
- 0
- cumulative oil, bbl
- 152K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 24, 1984
- Shut in
- —
- Plugged
- Jun 27, 2025
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| S.T.S. -E- O-1-20493 | Big Mule (5500 Sand) | Central Gulf Petroleum Inc | 1 | 0 | 0 | Jul 2021 – Jul 2026 |
| S.T.S. -E- G-1-110100 | Big Mule (5500 Sand) | Blue Flame Operating Company LLC | 1 | 0 | 152K | Jan 1993 – Jan 2022 |
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.
- 1Petrolero Corp.Jan 1993 → Sep 1994
- 2Buffalo Oil Corp.Oct 1994 → Nov 1995
- 3Tracker Oil & Gas, Inc.Jul 1999 → Apr 2001
- 4F M Oil Co.May 2001 → Sep 2001
- 5B.P. Productions Inc.Oct 2014 → Sep 2017
- 6Houston Gulf Energy CorporationOct 2017 → Feb 2019
- 7CXL Energy LLCAug 2021 → Aug 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 228496-99 | Drill | Petrolero Corp. | Feb 3, 1984 | Feb 6, 1984 | — | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-1-110100 | — | — | — | — |
| — | — O-1-20493 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 347 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 1,960 | -1,613 |
| Carrizo | 3,540 | -3,193 |
| Carrizo | 3,550 | -3,203 |
| Wilcox | 4,730 | -4,383 |
| WilcoxTOP OF WILCOX | 4,830 | -4,483 |
| Mula | 5,560 | -5,213 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,496 | 5,503 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 263 | 12.25 | 160 S |
| 4.5 | 5,686 | 7.875 | 990 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 | Dec 30, 2021 | Aug 23, 2021 | — |
| 00 | May 8, 1984 | Apr 18, 1984 | — |
| 00 | May 1, 1984 | Apr 18, 1984 | — |
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 42-311-32014 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-32014 → 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/31132014, documented in the API reference.