WELL · 42-283-31611 · DISTRICT 1
South Texas Syndicate II-B #10
LA Salle County · Washburn (Edwards) field · Vertical
South Texas Syndicate II-B #10 (API 42-283-31611) is a plugged well in La Salle County, plugged September 13, 2023, last operated by Silverbow Resources Oper LLC.
The RRC has issued one drilling permit, issued July 23, 1996, permitted to 11,000 ft.
It was permitted by Quintana Pet. Corp. and has since transferred to Silverbow Resources Oper LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Queen City, Carrizo, Wilcox, Midway.
Operator of record
Permitted by Quintana Pet. Corp.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 4, 2026 · 460 permits on file · (469) 575-3805
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Silverbow Resources Oper LLC |
| Production reports | Sea Eagle Ford, LLCthrough May 2018 |
| Latest permit | Quintana Pet. Corp.Jul 23, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 1
- permits on file
- Jul 23, 1996
- last permit issued
- Nov 11, 1996
- completed
- 0
- cumulative oil, bbl
- 525K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 1996 THROUGH Sep 2023
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 11, 1996
- Shut in
- —
- Plugged
- Sep 13, 2023
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 |
|---|---|---|---|---|---|---|
| South Texas Syndicate II-B G-1-161512 | Washburn (Edwards) | Silverbow Resources Oper, LLC | 1 | 0 | 525K | Nov 1996 – Sep 2023 |
| South Texas Syndicate II G-1-162416 | Washburn (Edwards) | Quintana Pet. Corp. | 1 | 0 | 0 | Nov 1996 – Dec 1996 |
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.
- 1Quintana Pet. Corp.Jan 1997 → Nov 2000
- 2Hilcorp Energy CompanyDec 2000 → Jun 2005
- 3Pioneer Natural Res. USA, Inc.Jul 2005 → Mar 2017
- 4Sea Eagle Ford, LLCMay 2018 → May 2018
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 450656-99 | Drill | Quintana Pet. Corp. | Jul 23, 1996 | Jul 23, 1996 | Sep 15, 1996 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-1-161512 | — | — | — | — |
| — | — G-1-162416 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 419 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 3,170 | -2,751 |
| Carrizo | 4,500 | -4,081 |
| Wilcox | 5,660 | -5,241 |
| Midway | 8,350 | -7,931 |
| Navarro | 9,320 | -8,901 |
| Austin Chalk | 9,910 | -9,491 |
| Eagle FordEAGLEFORD | 10,090 | -9,671 |
| Buda | 10,198 | -9,779 |
| Edward | 10,600 | -10,181 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,306 | 10,318 | Perforated |
| 10,324 | 10,336 | Perforated |
| 10,348 | 10,354 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,016 | 13.5 | 1,100 S |
| 5.5 | 10,582 | 8.75 | 1,725 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 22, 1997 | Jan 16, 1997 | — |
| 00 | Apr 11, 1997 | — | — |
| 00 | Feb 27, 1997 | Jan 16, 1997 | Yes |
| 00 | Feb 13, 1997 | — | — |
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 42-283-31611 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-283-31611 → 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/28331611, documented in the API reference.