WELL · 42-479-31921 · DISTRICT 4
South Callaghan Ranch #4
Webb County · Beccero Creek (Wilcox Lo.) field · Vertical
South Callaghan Ranch #4 (API 42-479-31921) is a well in Webb County operated by Mobil Producing TX. & N.M. Inc., completed May 2, 1978.
The RRC has issued 2 drilling permits (amended once) between 1977 and 1992, permitted to 11,000 ft.
No lease production has been reported under this well’s leases.
Operator of record
Mobil Producing TX. & N.M. Inc.
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 4, 2025
- Permits on file
- 6,763
- Phone
- (346) 474-9142
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 | Mobil Producing TX. & N.M. Inc.Sep 24, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 3
- permits on file
- Sep 24, 1992
- last permit issued
- May 2, 1978
- completed
- 0
- cumulative oil, bbl
- 821K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 2, 1978
- Shut in
- —
- Plugged
- —
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| South Callaghan Ranch G-4-143971 | Beccero Creek (Lobo Cons.) | Aldine Oil and Gas, LP | 1 | 0 | 821K | Jan 1993 – Jul 2026 |
| — G-4-76983 | — | — | 0 | 0 | 0 | — |
Gas, mcf lease total
Last 12 months 6,254 · prior 12 17,397(-64%)
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 → Dec 2001
- 3Calpine Natural Gas CompanyJan 2002 → Apr 2002
- 4Calpine Natural Gas Company L.P.May 2002 → Jul 2002
- 5Calpine Natural Gas L.P.Aug 2002 → Dec 2005
- 6Rosetta Resources Operating LPJan 2006 → Mar 2012
- 7Pinpoint Energy Operating, LLCApr 2012 → Aug 2012
- 8Petropoint Energy Operating, LLCSep 2012 → Jul 2014
- 9White Oak Operating Company LLCAug 2014 → Feb 2023
- 10Aldine Oil and Gas, LPMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 403842-98 | Recompletion | Mobil Producing TX. & N.M. Inc. | Oct 19, 1992 | Sep 24, 1992 | Oct 10, 1992 | 8,490 |
| 403842-99 | Recompletion | Mobil Producing TX. & N.M. Inc. | Sep 24, 1992 | Sep 24, 1992 | — | 8,490 |
| 14924-99 | Drill | Mobil Oil Corporation | Dec 28, 1977 | Dec 28, 1977 | Mar 2, 1978 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-76983 | — | — | — | — |
| — | — G-4-143971 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,706 | 7,730 | Perforated |
| 7,956 | 7,972 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 315 | 17.5 | 350 S |
| 13.375 | 315 | — | 350 S |
| 8.625 | 4,004 | 12.25 | 1,350 S |
| 8.625 | 4,004 | — | 1,350 S |
| 5.5 | 8,720 | 7.875 | 400 S |
| 5.5 | 8,720 | — | 400 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 | Mar 10, 1993 | Feb 9, 1993 | Yes |
| 00 | Feb 25, 1993 | — | — |
| 00 | Jan 12, 1984 | Jun 14, 1978 | — |
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 42-479-31921 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-31921 → 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/47931921, documented in the API reference.