WELL · 42-479-35329 · DISTRICT 4
South Callaghan Ranch #51
Webb County · Small Cowboy (Lobo 6) field · Vertical
South Callaghan Ranch #51 (API 42-479-35329) is a plugged well in Webb County, plugged November 14, 2012, last operated by Rosetta Resources Operating LP.
The RRC has issued one drilling permit (amended once), issued October 25, 1991, permitted to 10,000 ft.
It was permitted by Mobil Producing TX. & N.M. Inc. and has since transferred to Rosetta Resources Operating LP on the wellbore schedule.
Completion filings report 2 formation tops, including Wilcox, Lobo 6.
Operator of record
Rosetta Resources Operating LP
Permitted by Mobil Producing TX. & N.M. Inc.; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Aug 4, 2025 · 1,218 permits on file · (210) 384-5000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rosetta Resources Operating LP |
| Production reports | Michael Petroleum Corporationthrough Aug 1998 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Oct 25, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 2
- permits on file
- Oct 25, 1991
- last permit issued
- Feb 20, 1992
- completed
- 0
- cumulative oil, bbl
- 4.31M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Nov 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 20, 1992
- Shut in
- —
- Plugged
- Nov 14, 2012
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 |
|---|---|---|---|---|---|---|
| South Callaghan Ranch G-4-140858 | Small Cowboy (Lobo 6) | Rosetta Resources Operating LP | 1 | 0 | 4.31M | Jan 1993 – Nov 2012 |
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.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Apr 1998
- 2Michael Petroleum CorporationMay 1998 → Aug 1998
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 393126-98 | Field transfer | Mobil Producing TX. & N.M. Inc. | May 24, 1993 | Oct 25, 1991 | — | 9,100 |
| 393126-99 | Drill | Mobil Producing TX. & N.M. Inc. | Oct 21, 1991 | Oct 25, 1991 | Oct 31, 1991 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-140858 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 543 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,195 | 8,202 | Perforated |
| 8,205 | 8,212 | Perforated |
| 8,258 | 8,271 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 60 | — | — |
| 9.625 | 505 | 12.25 | 220 S |
| 7 | 7,440 | 8.75 | 350 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 23, 1993 | Mar 10, 1992 | — |
| 00 | Mar 23, 1992 | Mar 10, 1992 | Yes |
| 00 | Mar 17, 1992 | — | — |
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 42-479-35329 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35329 → 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/47935329, documented in the API reference.