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TEXAS · WELLS · WEBB COUNTY · API 42-479-35027 · DISTRICT 04

South Callaghan Ranch #20

Y

Webb County · Big Cowboy (Wilcox 6000) field · Producing  · Vertical

South Callaghan Ranch #20 (API 42-479-35027) is a well in Webb County operated by Aldine Oil And Gas LP, completed February 3, 2008 and listed as producing on the RRC schedule.

The RRC has issued 3 drilling permits between 1990 and 2008, permitted to 7,150 ft.

It was permitted by Rosetta Resources Operating LP and has since transferred to Aldine Oil And Gas LP on the wellbore schedule.

Completion filings report 3 formation tops, including Wilcox, Lobo 1, Lobo 6.

No lease production has been reported under this well’s leases.

Operator of record

Aldine Oil and Gas LP

Permitted by Rosetta Resources Operating LP; the EWA schedule now lists a different operator.

Based in
Tomball, TX
P-5 status
Delinquent (D)
P-5 last filed
Jun 4, 2025
Phone
(281) 822-1400
Watch this operatorWatch Webb County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleAldine Oil and Gas LP
Production reportsAldine Oil and Gas, LPthrough Apr 2026
Latest permitRosetta Resources Operating LPMar 4, 2008

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

7,150
total depth, ft
3
permits on file
Mar 4, 2008
last permit issued
Feb 3, 2008
completed
0
cumulative oil, bbl
2.42M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Feb 3, 2008
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active (A)

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 3 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
South Callaghan Ranch G-4-135453Callaghan, N. (Wilcox, Lo.)Aldine Oil and Gas, LP101.99MJan 1993 – Jul 2026
South Callaghan Ranch G-4-226138Beccero Creek (Wilcox, Lo.)Aldine Oil and Gas, LP1019.7KMar 2007 – Jul 2026
South Callaghan Ranch G-4-235278Big Cowboy (Wilcox 6000)Aldine Oil and Gas, LP10413KFeb 2008 – Jul 2026

Gas, mcf lease total

Last 12 months 270 · prior 12 116(+133%)

0100200202420252026

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Apr 1998
  2. 2Michael Petroleum CorporationMay 1998 → Dec 2001
  3. 3Calpine Natural Gas CompanyJan 2002 → Apr 2002
  4. 4Calpine Natural Gas Company L.P.May 2002 → Jul 2002
  5. 5Calpine Natural Gas L.P.Aug 2002 → Dec 2005
  6. 6Rosetta Resources Operating LPJan 2006 → Mar 2012
  7. 7Pinpoint Energy Operating, LLCApr 2012 → Aug 2012
  8. 8Petropoint Energy Operating, LLCSep 2012 → Jul 2014
  9. 9White Oak Operating Company LLCAug 2014 → Feb 2023
  10. 10Aldine Oil and Gas, LPMar 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
656017-99RecompletionRosetta Resources Operating LPFeb 25, 2008Mar 4, 2008Jan 31, 20087,150
636685-99RecompletionRosetta Resources Operating LPApr 9, 2007Apr 14, 2007Feb 28, 20077,150
372188-99DrillMobil Producing TX. & N.M. Inc.Apr 16, 1990Apr 18, 1990—8,000

Completions

CompletedLeaseFieldOperatorStatusDepth
Feb 3, 2008South Callaghan Ranch G-4-235278Big Cowboy (Wilcox 6000)Aldine Oil and Gas LPProducing7,150
Mar 21, 2007South Callaghan Ranch G-4-226138Beccero Creek (Lobo Cons.)Aldine Oil and Gas LPPartial Plug · shut in Dec 1, 20077,150
May 26, 1990South Callaghan Ranch G-4-135453Callaghan N. (Wilcox Lo.)Aldine Oil and Gas LPPartial Plug · shut in Mar 1, 20077,150

Formation tops

As filed on W-2/G-1. Subsea from 523 ft elevation.Download CSV →

FormationMD ftSubsea
WilcoxMIDDLE WILCOX5,260-4,737
Lobo 16,240-5,717
Lobo 66,880-6,357

Perforations

Perforated and open-hole intervals.

FromToType
5,0125,016Perforated
6,1266,134Perforated
6,2386,272Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
1660——
9.62554012.25230 S
5.57,1478.75353 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Jun 11, 2008Mar 7, 2008—
00May 27, 2008——
00May 16, 2007Apr 17, 2007—
00Apr 24, 2007——
00Sep 10, 1990Jun 12, 1990Yes
00Aug 31, 1990——

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.

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/47935027, documented in the API reference.