WELL · 42-311-31345 · DISTRICT 1
South Texas Syndicate -A- #11
McMullen County · Vertical
South Texas Syndicate -A- #11 (API 42-311-31345) is a permitted well in Mcmullen County filed by Whiting Oil And Gas Corporation; no completion report is on file yet.
The RRC has issued 3 drilling permits between 1979 and 2005, permitted to 6,300 ft.
Completion filings report 3 formation tops, including Yegua, Queen City, Carrizo.
Its 2 leases have reported 480K barrels of oil and 164K mcf of gas since January 1993, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Whiting Oil and Gas Corporation
Houston, TX · P-5 Y, filed Sep 4, 2025 · 2,092 permits on file · (432) 934-7212
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Caribbean Energy LLC IIthrough Apr 2026 |
| Latest permit | Whiting Oil and Gas CorporationApr 22, 2005 |
- 6,300
- total depth, ft
- 3
- permits on file
- Apr 22, 2005
- last permit issued
- —
- completed
- 480K
- cumulative oil, bbl
- 164K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 2 leases this well is completed on; they carry 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| South Texas Syndicate -A- O-1-6008 | Green Branch (4600) | Caribbean Energy LLC II | 5 | 417K | 825 | Jan 1993 – Jul 2026 |
| South Texas Syndicate -A- O-1-14577 | Green Branch (5500) | Caribbean Energy LLC II | 1 | 63.2K | 164K | Jan 2005 – Jul 2026 |
Oil, barrels lease total
Last 12 months 2,835 · prior 12 3,001(-6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1American Cometra, Inc.Jan 1993 → Mar 1993
- 2Swift Energy CompanyApr 1993 → Jun 2002
- 3Whiting Petroleum CorporationJul 2002 → Nov 2003
- 4Whiting Oil and Gas CorporationDec 2003 → Dec 2015
- 5Foundation Energy Management LLCJan 2016 → Jul 2018
- 6Terrafina Energy, LLCAug 2018 → Feb 2023
- 7Vermillion Production, Inc.Mar 2023 → Feb 2026
- 8Caribbean Energy LLC IIMar 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 560672-99 | Recompletion | Whiting Oil and Gas Corporation | Apr 18, 2005 | Apr 22, 2005 | — | 6,200 |
| 554838-99 | Recompletion | Whiting Oil and Gas Corporation | Dec 14, 2004 | Dec 14, 2004 | — | 6,200 |
| 58195-99 | Drill | Skinner Corp-Newman Bros.drlg.co | Sep 18, 1979 | Sep 18, 1979 | Oct 5, 1979 | 6,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-6008 | — | — | — | — |
| — | — O-1-14577 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 286 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yegua | 1,150 | -864 |
| Queen City | 2,270 | -1,984 |
| Carrizo | 3,960 | -3,674 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,634 | 4,639 | Perforated |
| 5,443 | 5,553 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 293 | 12.25 | 175 S |
| 8.625 | 293 | 12.75 | 175 S |
| 2.375 | 4,515 | — | — |
| 4.5 | 6,199 | 7.875 | 595 S |
| 4.5 | 6,200 | 7.875 | 595 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 12, 2019 | Dec 21, 2018 | — |
| 00 | Jun 29, 2005 | Mar 14, 2005 | Yes |
| 00 | Apr 6, 2005 | — | — |
| 00 | Jan 12, 1984 | Nov 9, 1979 | — |
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 42-311-31345 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-31345 → 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/31131345, documented in the API reference.