WELL · 42-479-35078 · DISTRICT 4
South Callaghan Ranch #31
Webb County · Vertical
South Callaghan Ranch #31 (API 42-479-35078) is a permitted well in Webb County filed by Calpine Natural Gas L.P.; no completion report is on file yet.
The RRC has issued 3 drilling permits (amended once) between 1990 and 2004, permitted to 9,000 ft.
Completion filings report 3 formation tops, including Lobo 1, Lobo 3, Lobo 6.
Operator of record
Houston, TX · P-5 Y, filed Dec 8, 2006 · 85 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Calpine Natural Gas L.P.through Dec 2004 |
| Latest permit | Calpine Natural Gas L.P.Oct 22, 2004 |
- 9,000
- total depth, ft
- 4
- permits on file
- Oct 22, 2004
- last permit issued
- —
- completed
- 0
- cumulative oil, bbl
- 715K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Sep 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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-4-142877 | Beccero Creek (Lobo Cons.) | Rosetta Resources Operating LP | 1 | 0 | 715K | Jan 1993 – Sep 2012 |
| — G-4-137035 | — | — | 0 | 0 | 0 | — |
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 → 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 2004
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 552595-99 | Recompletion | Calpine Natural Gas L.P. | Oct 20, 2004 | Oct 22, 2004 | — | 8,450 |
| 398265-98 | Recompletion | Mobil Producing TX. & N.M. Inc. | Aug 6, 1992 | Apr 14, 1992 | Oct 21, 1992 | 8,450 |
| 398265-99 | Recompletion | Mobil Producing TX. & N.M. Inc. | Apr 10, 1992 | Apr 14, 1992 | — | 8,450 |
| 376624-99 | Drill | Mobil Producing TX. & N.M. Inc. | Aug 15, 1990 | Aug 15, 1990 | — | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-137035 | — | — | — | — |
| — | — G-4-142877 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 570 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lobo 1 | 7,000 | -6,430 |
| Lobo 3 | 7,432 | -6,862 |
| Lobo 6 | 7,730 | -7,160 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,056 | 7,072 | Perforated |
| 7,136 | 7,254 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 60 | — | — |
| 9.625 | 1,775 | 12.25 | 535 S |
| 7 | 6,642 | 8.75 | 390 S |
| 7 | — | 7.75 | 617 S |
| 7 | — | 8.75 | 617 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 | Jan 22, 1993 | — |
| 00 | Dec 14, 1992 | Nov 9, 1992 | — |
| 00 | Nov 16, 1992 | — | — |
| 00 | Apr 12, 1991 | Feb 11, 1991 | — |
| 00 | Apr 11, 1991 | Dec 12, 1990 | — |
| 00 | Mar 13, 1991 | Oct 12, 1990 | Yes |
| 00 | Mar 1, 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 42-479-35078 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35078 → 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/47935078, documented in the API reference.