Petrora

OPERATORS · RRC 102306  · P-5 STATUS Y

Old Chief Oil, LLC

San Antonio, TX

Watch this operator

Old Chief Oil, LLC has filed no drilling permits in the past 12 months.

The RRC wellbore file lists 32 wells under its operatorship (32 producing).

Lease reports credit it with 3.44K barrels of oil and 0 mcf of gas in the 12 months reported through April 2026, up 80% on the year before.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
32
producing wells, of 32 of record
5
leases it reports
—
horizontal, 12 months

WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026

Where

No permits on file under this operator number. Counties of its wells of record, from the RRC wellbore file.

CountyWellsProducing
Bexar county →2727
Medina county →44
Atascosa county →11

All 0 permits, searchable → · Leases it reports → · On the map →

Formations in its completed wells

Tops reported on completion filings for wells it operates. RRC wellbore file. About tops →

FormationWellsPermitted last 3 yrs
No completion tops on file.

Production by month

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Barrels on leases where this operator filed the production report. Lease-level by design; the latest months are revised upward as late reports arrive. How production is reported →

3.44K
bbl oil, last 12 reported months
+80%
vs the 12 months before
0
mcf gas incl. casinghead, last 12
5.35K
bbl oil since reporting began

Oil, barrels

Last 12 months 3,441 · prior 12 1,911(+80%)

0200400600202420252026

Beyond the permit record

RRC wellbore file

Wells of record

32
on the schedule
32
producing
0
shut in
0
injection
0
temp. abandoned
0
plugged

How it got them

0
permitted itself
32
acquired from others
0
permitted, now run by others

Acquired means the well's permit names a different operator than the schedule does today. Transfers and operator numbers →

Fields

RRC regulatory fields with the most wells of record under this operator. The field opens its page; the count opens this operator's wells in it.

FieldWellsProducing
Somerset845600012828
Chicon Lake1766800144

P-5 organization report

As registered with the RRC. About the P-5 →

Registration
Status code Y
Last filed Mar 4, 2026
Oil operator
Address
110 Broadway Ste 190
San Antonio, TX 78205
(210) 244-3337
Officers and agents
Calfas, Neil · Member,owner

Latest permits

NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
347425Jun 7, 1988Jun 7, 1988Dodson, Inc.BexarLong #201,50002937956
347424Jun 7, 1988Jun 7, 1988Dodson, Inc.BexarLong #191,50002937955
346375May 12, 1988May 12, 1988Dodson, Inc.BexarLong #151,50002937944
346374May 12, 1988May 12, 1988Dodson, Inc.BexarLong #41,50002937943
346373May 12, 1988May 12, 1988Dodson, Inc.BexarLong #51,50002937945
346372May 12, 1988May 12, 1988Dodson, Inc.BexarLong #141,50002937946
345966May 5, 1988May 5, 1988Dodson, Inc.BexarLong #121,50002937935
345965May 3, 1988May 3, 1988Dodson, Inc.BexarLong #61,50002937934
343279Mar 2, 1988Mar 2, 1988Dodson, Inc.BexarLong #71,50002937918
343280Mar 1, 1988Mar 1, 1988Dodson, Inc.BexarLong #111,50002937917
341056Jan 7, 1988Jan 7, 1988Dodson, Inc.BexarLong #A 131,50002937896
341055Jan 7, 1988Jan 7, 1988Dodson, Inc.BexarLong #21,50002937895
340267Dec 15, 1987Dec 15, 1987Dodson, Inc.BexarLong #11,30002937881
327868Mar 19, 1987Mar 19, 1987Somerset Insulation Inc.BexarBaker #101,30002937759
327867Mar 19, 1987Mar 19, 1987Somerset Insulation Inc.BexarBaker #91,30002937760

Full permit history →

About this data

Registration from the RRC P-5 organization report, refreshed weekly. Permits from the OGA049M master and daily daf420 files; wells of record from the EWA wellbore schedule; production from PDQ lease reports at the last vintage; disposal from UIC permits and H-10 reports. Summary figures are rebuilt nightly.

Developers: this page as JSON is GET /v1/data/operators/tx/102306, documented in the API reference.