WELL · 42-479-35171 · DISTRICT 4
Vaquillas 136A #2
Webb County · Vaquillas Ranch (Lobo) field · Vertical
Vaquillas 136a #2 (API 42-479-35171) is a plugged well in Webb County, plugged February 4, 1997, last operated by Sonat Exploration CO. - Houston.
The RRC has issued one drilling permit, issued February 7, 1991, permitted to 10,100 ft.
It was permitted by Enron Oil & Gas Company and has since transferred to Sonat Exploration CO. - Houston on the wellbore schedule.
Completion filings report 3 formation tops, including Queen City, Wilcox, Lobo.
Operator of record
Sonat Exploration Co. - Houston
Permitted by Enron Oil & Gas Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Inactive (I)
- P-5 last filed
- Apr 15, 1993
- Permits on file
- 197
- Phone
- (713) 940-4026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sonat Exploration Co. - Houston |
| Production reports | Sonat Exploration Co. - Houstonthrough Aug 1996 |
| Latest permit | Enron Oil & Gas CompanyFeb 7, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,100
- total depth, ft
- 1
- permits on file
- Feb 7, 1991
- last permit issued
- Oct 23, 1992
- completed
- 0
- cumulative oil, bbl
- 278K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 1997
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 23, 1992
- Shut in
- —
- Plugged
- Feb 4, 1997
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 |
|---|---|---|---|---|---|---|
| Vaquillas 136A G-4-138500 | Vaquillas Ranch (Lobo) | Sonat Exploration Co. - Houston | 1 | 0 | 278K | Jan 1993 – Feb 1997 |
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.
- 1Enron Oil & Gas CompanyJan 1993 → Aug 1994
- 2Sonat Exploration Co. - HoustonSep 1994 → Aug 1996
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 384388-99 | Drill | Enron Oil & Gas Company | Feb 7, 1991 | Feb 7, 1991 | Mar 20, 1991 | 10,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-138500 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 536 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,650 | -2,114 |
| Wilcox | 4,830 | -4,294 |
| Lobo | 7,940 | -7,404 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,107 | 8,126 | Perforated |
| 8,590 | 8,597 | Perforated |
| 8,590 | 8,691 | Perforated |
| 8,680 | 8,691 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 517 | 12.25 | 230 S |
| 7 | 7,190 | 8.75 | 250 S |
| 2.875 | 8,989 | 6.25 | 240 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 | Aug 2, 1994 | Jun 8, 1994 | — |
| 00 | Dec 14, 1992 | Nov 9, 1992 | — |
| 00 | Jul 9, 1991 | May 31, 1991 | — |
| 00 | Jul 8, 1991 | Apr 24, 1991 | Yes |
| 00 | Jul 3, 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 42-479-35171 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35171 → 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/47935171, documented in the API reference.