WELL · 42-321-31523 · DISTRICT 3
State Tract 181 #5
Matagorda County · Matagorda Bay S (Miocene 2800) field · Vertical
State Tract 181 #5 (API 42-321-31523) is a plugged well in Matagorda County, plugged November 26, 2012, last operated by Sterling Expl. & Prod. CO. LLC.
The RRC has issued one drilling permit (amended once), issued September 8, 1986, permitted to 4,200 ft.
It was permitted by Sonora Exploration Corporation and has since transferred to Sterling Expl. & Prod. CO. LLC on the wellbore schedule.
Completion filings report one formation top, including Miocene (undifferentiated).
Operator of record
Sterling Expl. & Prod. Co. LLC
Permitted by Sonora Exploration Corporation; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Apr 4, 2026 · 29 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sterling Expl. & Prod. Co. LLC |
| Production reports | Sterling Expl. & Prod. Co., LLCthrough Dec 2009 |
| Latest permit | Sonora Exploration CorporationSep 8, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,200
- total depth, ft
- 2
- permits on file
- Sep 8, 1986
- last permit issued
- Sep 29, 1990
- completed
- 0
- cumulative oil, bbl
- 4.75K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Nov 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 29, 1990
- Shut in
- —
- Plugged
- Nov 26, 2012
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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| State Tract 181 G-3-122738 | Matagorda Bay, S (Miocene 2800) | Sterling Expl. & Prod. Co., LLC | 1 | 0 | 4.75K | Jan 1993 – Nov 2012 |
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.
- 1Sterling Expl. & Prod. Co., LLCJun 2006 → Dec 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 320158-98 | Drill | Sonora Exploration Corporation | Dec 4, 1986 | Sep 8, 1986 | — | 4,200 |
| 320158-99 | Drill | Sonora Exploration Corporation | Sep 4, 1986 | Sep 8, 1986 | — | 4,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-122738 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 45 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE 2750 | 2,786 | -2,741 |
| Miocene (undifferentiated)MIOCENE 3600 | 3,652 | -3,607 |
| Miocene (undifferentiated)MIOCENE 4100 | 4,062 | -4,017 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,807 | 2,811 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 177 | — | — |
| 9.625 | 1,086 | 12.25 | 383 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 | May 16, 1991 | Jan 11, 1991 | — |
| 00 | Dec 31, 1986 | Nov 12, 1986 | Yes |
| 00 | Dec 11, 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.
- Wellbore filings for 42-321-31523 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-31523 → 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/32131523, documented in the API reference.