TEXAS · WELLS · LAVACA COUNTY · API 42-285-32401 · DISTRICT 02
Kubena Wilcox Gas Unit #4
Lavaca County · Halletsville (Simmons) field · Producing · Directional
Kubena Wilcox Gas Unit #4 (API 42-285-32401) is a well in Lavaca County operated by Capital Star Oil & Gas Inc., completed July 9, 1997 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued August 29, 1996, permitted to 15,068 ft.
It was permitted by Bass Enterprises Production CO. and has since transferred to Capital Star Oil & Gas Inc. on the wellbore schedule.
Completion filings report 4 formation tops, including Wilcox, Navarro, Austin Chalk, Edwards.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Bass Enterprises Production Co.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 19, 2026
- Permits on file
- 49
- Phone
- (713) 554-4620
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sulphur River Exploration Inc. |
| Production reports | Capital Star Oil & Gas, Inc.through Apr 2026 |
| Latest permit | Bass Enterprises Production Co.Aug 29, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 15,068
- total depth, ft
- 3
- permits on file
- Aug 29, 1996
- last permit issued
- Jul 9, 1997
- completed
- 0
- cumulative oil, bbl
- 2.88M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 1997 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 9, 1997
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Kubena Wilcox Gas Unit G-2-165291 | Halletsville (Simmons) | Capital Star Oil & Gas, Inc. | 1 | 0 | 2.88M | Mar 1997 – Jul 2026 |
| Kubena Wilcox Gas Unit G-2-165387 | Wildcat | Sulphur River Exploration, Inc. | 1 | 0 | 0 | Feb 1997 – Jul 2026 |
Gas, mcf lease total
Last 12 months 54,945 · prior 12 60,981(-10%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Bass Enterprises Production Co.Mar 1997 → Dec 2006
- 2Bepco, L.P.Jan 2007 → Nov 2008
- 3Bopco, L.P.Dec 2008 → May 2016
- 4Sulphur River Exploration, Inc.Jun 2016 → May 2023
- 5Capital Star Oil & Gas, Inc.Jun 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 451996-97 | Drill | Bass Enterprises Production Co. | Jul 21, 1997 | Aug 29, 1996 | — | 15,068 |
| 451996-98 | Drill | Bass Enterprises Production Co. | Apr 25, 1997 | Aug 29, 1996 | — | 15,068 |
| 451996-99 | Drill | Bass Enterprises Production Co. | Aug 28, 1996 | Aug 29, 1996 | Oct 14, 1996 | 15,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 9, 1997 | Kubena Wilcox Gas Unit G-2-165291 | Halletsville (Simmons) | Capital Star Oil & Gas Inc. | Producing | 15,068 |
| Feb 13, 1997 | Kubena Wilcox Gas Unit G-2-165387 | Wildcat | Sulphur River Exploration Inc. | SWR-10-Well · shut in Oct 1, 2000 | 15,068 |
Formation tops
As filed on W-2/G-1. Subsea from 209 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxTOP WILCOX | 5,730 | -5,521 |
| WilcoxTOP MID WILCOX | 7,200 | -6,991 |
| NavarroTOP NAVARRO | 11,345 | -11,136 |
| Austin ChalkTOP AUSTIN CHALK | 13,180 | -12,971 |
| EdwardsTOP EDWARDS | 13,250 | -13,041 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,720 | 10,765 | Perforated |
| 11,170 | 11,204 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 2,557 | 17.5 | 1,900 S |
| 9.625 | 10,422 | 12.25 | 1,215 S |
| 5.5 | 11,455 | 8.5 | 650 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 | Jul 16, 1998 | Jul 24, 1997 | Yes |
| 00 | May 21, 1998 | Jul 24, 1997 | — |
| 00 | Feb 25, 1998 | Apr 24, 1997 | Yes |
| 00 | Dec 5, 1997 | — | — |
| 00 | Dec 3, 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 42-285-32401 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-32401 → 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/28532401, documented in the API reference.