WELL · 42-131-37414 · DISTRICT 4
Hubberd-Frost Nat. Bank Gas Unit #4
Duval County · Rosita NW (Wilcox Cons.) field · Producing · Vertical
Hubberd-Frost Nat. Bank Gas Unit #4 (API 42-131-37414) is a well in Duval County operated by Block T Petroleum Inc., completed January 25, 1991 and listed as producing on the RRC schedule, shut in August 1, 2026.
The RRC has issued one drilling permit, issued June 17, 1990, permitted to 13,488 ft.
It was permitted by Shell Western E&P Inc. and has since transferred to Block T Petroleum Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Queen City, Massive Upper Wilcox.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Shell Western E&P Inc.; the EWA schedule now lists a different operator.
- Based in
- Tyler, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 13, 2026
- Permits on file
- 13
- Phone
- (903) 526-4680
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Block T Petroleum Inc. |
| Production reports | Block "T" Petroleum, Inc.through Apr 2026 |
| Latest permit | Shell Western E&P Inc.Jun 17, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,488
- total depth, ft
- 1
- permits on file
- Jun 17, 1990
- last permit issued
- Jan 25, 1991
- completed
- 0
- cumulative oil, bbl
- 3.29M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 25, 1991
- Shut in
- Aug 1, 2026
- 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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Hubberd-Frost Nat. Bank Gas Unit G-4-137108 | Rosita, NW (Wilcox R-S-U Cons.) | Block "T" Petroleum, Inc. | 1 | 0 | 3.29M | Jan 1993 – Jul 2026 |
Gas, mcf lease total
Last 12 months 28,581 · prior 12 30,703(-7%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Shell Western E&P Inc.Jan 1993 → Jul 1997
- 2Enron Oil & Gas CompanyAug 1997 → Sep 1999
- 3EOG Resources, Inc.Oct 1999 → Dec 2012
- 4Comstock Oil & Gas, LPJan 2013 → Nov 2016
- 5Rockdale Energy, LLCDec 2016 → Dec 2020
- 6Block "T" Petroleum, Inc.Jan 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 379569-99 | Drill | Shell Western E&P Inc. | Oct 16, 1990 | Jun 17, 1990 | Nov 12, 1990 | 13,488 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 25, 1991 | Hubberd-Frost Nat. Bank Gas Unit G-4-137108 | Rosita NW (Wilcox Cons.) | Block T Petroleum Inc. | Producing · shut in Aug 1, 2026 | 13,488 |
Formation tops
As filed on W-2/G-1. Subsea from 549 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 6,290 | -5,741 |
| Massive Upper Wilcox | 11,670 | -11,121 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,680 | 11,735 | Perforated |
| 11,680 | 11,736 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,500 | 17.5 | 1,071 S |
| 9.625 | 9,000 | 12.25 | 620 S |
| 5 | 13,484 | 6.5 | 540 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 | Dec 9, 1994 | Feb 18, 1991 | — |
| 00 | May 21, 1991 | Feb 21, 1991 | Yes |
| 00 | Mar 6, 1991 | — | — |
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 42-131-37414 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-131-37414 → 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/13137414, documented in the API reference.