WELL · 42-311-31918 · DISTRICT 1
South Texas Syndicate -B- #4020
McMullen County · Big Mule (5500 Sand) field · Vertical
South Texas Syndicate -B- #4020 (API 42-311-31918) is a plugged well in Mcmullen County, plugged March 8, 1989, last operated by Kaler Energy Corp..
The RRC has issued one drilling permit, issued September 15, 1983, permitted to 5,950 ft.
It was permitted by Chanoco Corporation and has since transferred to Kaler Energy Corp. on the wellbore schedule.
Completion filings report 6 formation tops, including Queen City, Carrizo, Wilcox, Top L. Wilcox Mula Sand.
Operator of record
Permitted by Chanoco Corporation; the EWA schedule now lists a different operator.
- Based in
- Boerne, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Apr 9, 2026
- Permits on file
- 240
- Phone
- (210) 824-1361
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Kaler Energy Corp. |
| Production reports | none |
| Latest permit | Chanoco CorporationSep 15, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,950
- total depth, ft
- 1
- permits on file
- Sep 15, 1983
- last permit issued
- Mar 31, 1984
- completed
- —
- cumulative oil, bbl
- —
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 31, 1984
- Shut in
- —
- Plugged
- Mar 8, 1989
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.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 212779-99 | Drill | Chanoco Corporation | Sep 12, 1983 | Sep 15, 1983 | Oct 1, 1983 | 5,950 |
Formation tops
As filed on W-2/G-1. Subsea from 413 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen CityTOP QUEEN CITY | 1,922 | -1,509 |
| CarrizoTOP CARRIZO | 3,564 | -3,151 |
| CarrizoBASE CARRIZO | 4,620 | -4,207 |
| WilcoxTOP WILCOX MARINE | 4,848 | -4,435 |
| Top L. Wilcox Mula Sand | 5,554 | -5,141 |
| Top L. Wilcox Mula Sand | 5,554 | -5,141 |
| Top Based Wilcox Marker | 5,900 | -5,487 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,557 | 5,562 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 276 | 13.75 | 200 sx |
| 4.5 | 5,918 | 7.875 | 1,500 sx |
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 | Jul 3, 1984 | Apr 27, 1984 | — |
| 00 | May 10, 1984 | Apr 27, 1984 | — |
| 00 | May 8, 1984 | Apr 27, 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 42-311-31918 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-31918 → 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/31131918, documented in the API reference.