WELL · 42-479-35365 · DISTRICT 4
South Callaghan Ranch #58R
Webb County · Beccero Creek (Lobo 6) field · Vertical
South Callaghan Ranch #58R (API 42-479-35365) is a plugged well in Webb County, plugged October 6, 1993, last operated by Mobil Producing TX. & N.M. Inc..
The RRC has issued 2 drilling permits (amended twice) between 1991 and 2005, permitted to 10,000 ft.
It was permitted by Calpine Natural Gas L.P. and has since transferred to Mobil Producing TX. & N.M. Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Wilcox, Lobo 6.
Operator of record
Mobil Producing TX. & N.M. Inc.
Permitted by Calpine Natural Gas L.P.; the EWA schedule now lists a different operator.
Spring, TX · P-5 Y, filed May 4, 2026 · 6,763 permits on file · (281) 773-7706
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mobil Producing TX. & N.M. Inc. |
| Production reports | Aldine Oil and Gas, LPthrough Apr 2026 |
| Latest permit | Calpine Natural Gas L.P.Sep 14, 2005 |
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
- 4
- permits on file
- Sep 14, 2005
- last permit issued
- Apr 1, 1992
- completed
- 0
- cumulative oil, bbl
- 37.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 1, 1992
- Shut in
- —
- Plugged
- Oct 6, 1993
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-4-213591 | Beccero Creek (Lobo Cons.) | Aldine Oil and Gas, LP | 1 | 0 | 37.7K | Sep 2005 – Jul 2026 |
| South Callaghan Ranch G-4-141898 | Beccero Creek (Lobo 6) | Mobil Producing TX. & N.M. Inc. | 1 | 0 | 0 | Jan 1993 – Oct 1993 |
Gas, mcf lease total
Last 12 months 1,685 · prior 12 2,447(-31%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Rosetta Resources Operating LPSep 2005 → Mar 2012
- 2Pinpoint Energy Operating, LLCApr 2012 → Aug 2012
- 3Petropoint Energy Operating, LLCSep 2012 → Apr 2013
- 4Aldine Oil and Gas, LPNov 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 606325-98 | Reenter | Calpine Natural Gas L.P. | Oct 14, 2005 | Sep 14, 2005 | Aug 22, 2005 | 9,300 |
| 606325-99 | Reenter | Calpine Natural Gas L.P. | Sep 14, 2005 | Sep 14, 2005 | — | 10,000 |
| 395085-98 | Field transfer | Mobil Producing TX. & N.M. Inc. | Nov 5, 1992 | Dec 16, 1991 | — | 10,000 |
| 395085-99 | Drill | Mobil Producing TX. & N.M. Inc. | Dec 16, 1991 | Dec 16, 1991 | Jan 15, 1992 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-141898 | — | — | — | — |
| — | — G-4-213591 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 529 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,916 | 7,926 | Perforated |
| 8,919 | 9,030 | Perforated |
| 8,919 | 9,030 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 60 | — | — |
| 9.625 | 1,003 | 12.25 | 380 S |
| 7 | 7,230 | 8.75 | 520 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 | Dec 7, 2023 | Nov 10, 2023 | — |
| 00 | Apr 26, 2006 | Oct 13, 2005 | Yes |
| 00 | Feb 1, 2006 | — | — |
| 00 | Feb 25, 1993 | Nov 5, 1992 | — |
| 00 | Aug 12, 1992 | Jul 2, 1992 | Yes |
| 00 | Aug 10, 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 42-479-35365 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35365 → 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/47935365, documented in the API reference.