WELL · 42-479-34718 · DISTRICT 4
South Callaghan Ranch #17
Webb County · Big Cowboy (Middle Wilcox) field · Vertical
South Callaghan Ranch #17 (API 42-479-34718) is a plugged well in Webb County, plugged June 13, 2003, last operated by Rosetta Resources Operating LP.
The RRC has issued 2 drilling permits between 1988 and 1994, permitted to 9,600 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 6 formation tops, including Wilcox, Middle Of Wilcox, Lobo 1, Lobo 2.
Operator of record
Rosetta Resources Operating LP
Permitted by Mobil Producing TX. & N.M. Inc.; the EWA schedule now lists a different operator.
- Based in
- San Antonio, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 1, 2025
- Permits on file
- 1,218
- Phone
- (210) 384-3200
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rosetta Resources Operating LP |
| Production reports | Michael Petroleum Corporationthrough Aug 1999 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Apr 22, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,600
- total depth, ft
- 2
- permits on file
- Apr 22, 1994
- last permit issued
- May 28, 1994
- completed
- 0
- cumulative oil, bbl
- 424K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Dec 2014
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 28, 1994
- Shut in
- —
- Plugged
- Jun 13, 2003
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 |
|---|---|---|---|---|---|---|
| South Callaghan Ranch G-4-150586 | Big Cowboy (Middle Wilcox) | Rosetta Resources Operating LP | 1 | 0 | 118K | May 1994 – Dec 2014 |
| South Callaghan Ranch G-4-131672 | Big Cowboy (Lobo) | Calpine Natural Gas L.P. | 1 | 0 | 306K | Jan 1993 – Jun 2003 |
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 1999
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 423249-99 | Recompletion | Mobil Producing TX. & N.M. Inc. | Apr 22, 1994 | Apr 22, 1994 | May 24, 1994 | 9,366 |
| 349047-99 | Drill | Mobil Producing TX. & N.M. Inc. | Jul 18, 1988 | Jul 20, 1988 | — | 9,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 28, 1994 | South Callaghan Ranch G-4-150586 | Big Cowboy (Middle Wilcox) | Rosetta Resources Operating LP | Plugged | — |
| Jul 8, 1989 | South Callaghan Ranch G-4-131672 | Big Cowboy (Lobo) | Calpine Natural Gas L.P. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 530 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,956 | 6,987 | Perforated |
| 8,202 | 8,212 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 60 | — | — |
| 9.625 | 1,000 | 12.25 | 425 S |
| 7 | 7,135 | 8.75 | 1,738 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 30, 1994 | Jul 1, 1994 | Yes |
| 00 | Aug 29, 1994 | — | Yes |
| 00 | Mar 14, 1990 | Mar 2, 1990 | — |
| 00 | Sep 20, 1989 | Aug 17, 1989 | Yes |
| 00 | Sep 2, 1989 | — | — |
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 42-479-34718 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-34718 → 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/47934718, documented in the API reference.