WELL · 42-479-35398 · DISTRICT 4

South Callaghan Ranch #61

South Callaghan Ranch #61 (API 42-479-35398) 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 2 drilling permits between 1992 and 2004, permitted to 8,300 ft.

Completion filings report 3 formation tops, including Wilcox, M. Wilcox, Lobo 6.

Operator of record

Calpine Natural Gas L.P.

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	Rosetta Resources Operating LPthrough May 2011
Latest permit	Calpine Natural Gas L.P.Oct 13, 2004

8,300: total depth, ft
2: permits on file
Oct 13, 2004: last permit issued
—: completed
0: cumulative oil, bbl
2.49M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jun 2013

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 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-4-141488	Beccero Creek (Lobo Cons.)	Rosetta Resources Operating LP	1	0	2.49M	Jan 1993 – Jun 2013

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 2005
6Rosetta Resources Operating LPJan 2006 → May 2011

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
552090-99	Recompletion	Calpine Natural Gas L.P.	Oct 8, 2004	Oct 13, 2004	—	8,000
396354-99	Drill	Mobil Producing TX. & N.M. Inc.	Jan 31, 1992	Jan 31, 1992	Feb 28, 1992	8,300

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-4-141488	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 562 ft elevation.Download CSV →

Formation	MD ft	Subsea
Wilcox	3,860	-3,298
M. Wilcox	5,530	-4,968
Lobo 6	7,660	-7,098

Perforations

Perforated and open-hole intervals.

From	To	Type
7,006	7,044	Perforated
7,141	7,146	Perforated
7,348	7,353	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
16	60	—	—
9.625	1,626	12.25	570 S
7	6,120	8.75	270 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 →

Filed	W-2 / G-1 date	Logs referenced
May 17, 2005	Jan 19, 2005	—
Jun 16, 1992	May 18, 1992	Yes
Jun 9, 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 42-479-35398 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-479-35398 → 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/47935398, documented in the API reference.