TEXAS · WELLS · WEBB COUNTY · SOUTH CALLAGHAN RANCH LEASE · API 42-479-35125 · DISTRICT 04
South Callaghan Ranch #36
Webb County · Callaghan N. (Wilcox Lo.) field · Vertical
South Callaghan Ranch #36 (API 42-479-35125) is a plugged well in Webb County, plugged March 6, 2008, last operated by Rosetta Resources Operating LP.
The RRC has issued one drilling permit, issued November 20, 1990, permitted to 8,300 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 3 formation tops, including Wilcox, Lobo 1, 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.
- 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 | Calpine Natural Gas L.P.through Mar 2003 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Nov 20, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,300
- total depth, ft
- 1
- permits on file
- Nov 20, 1990
- last permit issued
- Jan 21, 1990
- completed
- 0
- cumulative oil, bbl
- 144K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2008
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 21, 1990
- Shut in
- —
- Plugged
- Mar 6, 2008
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-4-137330 | Callaghan, N. (Wilcox, Lo.) | Rosetta Resources Operating LP | 1 | 0 | 144K | Jan 1993 – Mar 2008 |
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 → Mar 1999
- 3Calpine Natural Gas L.P.Jan 2003 → Mar 2003
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 381138-99 | Drill | Mobil Producing TX. & N.M. Inc. | Nov 15, 1990 | Nov 20, 1990 | Jan 1, 1991 | 8,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 21, 1990 | South Callaghan Ranch G-4-137330 | Callaghan N. (Wilcox Lo.) | Rosetta Resources Operating LP | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 518 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxMIDDLE WILCOX | 5,280 | -4,762 |
| Lobo 1 | 6,360 | -5,842 |
| Lobo 6 | 6,900 | -6,382 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,358 | 6,394 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 60 | — | — |
| 13.625 | 130 | 17.5 | 200 S |
| 9.625 | 3,627 | 12.25 | 400 S |
| 5.5 | 7,195 | 8.75 | 665 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 | May 20, 1991 | Mar 19, 1991 | Yes |
| 00 | Apr 11, 1991 | Feb 12, 1991 | Yes |
| 00 | Mar 26, 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 42-479-35125 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35125 → 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/47935125, documented in the API reference.