WELL · 42-479-35579 · DISTRICT 4
South Callaghan Ranch #89
Webb County · Small Cowboy (Lobo 6) field · Vertical
South Callaghan Ranch #89 (API 42-479-35579) is a plugged well in Webb County, plugged December 21, 2011, last operated by Rosetta Resources Operating LP.
The RRC has issued one drilling permit (amended once), issued August 31, 1992, permitted to 9,050 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 | Mobil Producing TX. & N.M. Inc.through Nov 1994 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Aug 31, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,050
- total depth, ft
- 2
- permits on file
- Aug 31, 1992
- last permit issued
- Oct 24, 1992
- completed
- 0
- cumulative oil, bbl
- 606K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Dec 2011
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 24, 1992
- Shut in
- —
- Plugged
- Dec 21, 2011
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-4-143678 | Small Cowboy (Lobo 6) | Rosetta Resources Operating LP | 1 | 0 | 606K | Jan 1993 – Dec 2011 |
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 → Nov 1994
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 402867-98 | Field transfer | Mobil Producing TX. & N.M. Inc. | Jun 29, 1993 | Aug 31, 1992 | — | 9,050 |
| 402867-99 | Drill | Mobil Producing TX. & N.M. Inc. | Aug 28, 1992 | Aug 31, 1992 | Sep 20, 1992 | 9,050 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-143678 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 576 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,226 | 8,266 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 60 | — | — |
| 9.625 | 270 | 12.25 | 175 S |
| 7 | 7,211 | 8.75 | 625 S |
| 2.875 | 8,680 | 6.125 | 450 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 | Sep 27, 1993 | Jan 11, 1993 | Yes |
| 00 | Feb 10, 1993 | Jan 11, 1993 | Yes |
| 00 | Feb 1, 1993 | — | — |
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 42-479-35579 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35579 → 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/47935579, documented in the API reference.