WELL · 42-311-31871 · DISTRICT 1
STS-E- #203
McMullen County · Big Mule (5500 Sand) field · Vertical
Sts-E- #203 (API 42-311-31871) is a plugged well in Mcmullen County, plugged November 19, 2014, last operated by Tracker Oil & Gas Inc..
The RRC has issued one drilling permit, issued July 11, 1983, permitted to 6,100 ft.
It was permitted by Petrolero Corp. and has since transferred to Tracker Oil & Gas Inc. on the wellbore schedule.
Its lease has reported 11.4K barrels of oil and 3.15K mcf of gas since January 1993, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Petrolero Corp.; the EWA schedule now lists a different operator.
Bastrop, TX · P-5 Y, filed Jan 5, 2026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Tracker Oil & Gas Inc. |
| Production reports | Tracker Oil & Gas, Inc.through Jun 2001 |
| Latest permit | Petrolero Corp.Jul 11, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,100
- total depth, ft
- 1
- permits on file
- Jul 11, 1983
- last permit issued
- Oct 1, 1983
- completed
- 11.4K
- cumulative oil, bbl
- 3.15K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 1, 1983
- Shut in
- —
- Plugged
- Nov 19, 2014
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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| STS-E- O-1-9199 | Big Mule (5500 Sand) | Tracker Oil & Gas, Inc. | 2 | 11.4K | 3.15K | Jan 1993 – Jul 2026 |
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 → Apr 1998
- 3Tracker Oil & Gas, Inc.Aug 1999 → Jun 2001
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 201183-99 | Drill | Petrolero Corp. | Jul 11, 1983 | Jul 11, 1983 | Aug 1, 1983 | 6,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-9199 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,539 | 5,544 | Perforated |
| — | 5,544 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 254 | 12.25 | 175 S |
| 2.375 | 5,458 | — | — |
| 4.5 | 5,664 | 7.875 | 775 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 | Jan 12, 1984 | Sep 9, 1983 | — |
| 00 | Jan 12, 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 42-311-31871 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-31871 → 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/31131871, documented in the API reference.