OPERATORS · TEXAS · P-5 NUMBER 102306
Old Chief Oil, LLC
- P-5 status
- Active (A)
- P-5 last filed
- Jun 3, 2026
- Based in
- San Antonio, TX
Old Chief Oil, LLC has filed no drilling permits in the past 12 months.
The RRC wellbore file lists 36 wells under its operatorship (34 producing).
Lease reports credit it with 2.87K barrels of oil and 0 mcf of gas in the 12 months reported through August 2026, down 9% on the year before.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 34
- producing wells, of 37 of record
- 5
- leases it reports · 14 ever reported on
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 11, 2026
Permits issued by month
LAST 60 MONTHS · BY ISSUE DATE
Last 12 months 0 · prior 12 0
Counties
No permits on file under this operator number. Counties of its wells of record, from the RRC wellbore file.
All 0 permits, searchable → · Leases it reported on → · On the map →
Formations in wells it permitted
Tops reported on completion filings for wells permitted under this operator number, including wells others run today. RRC wellbore file. About tops →
| Formation | Wells | Permitted last 3 yrs |
|---|---|---|
| No completion tops on file. | ||
Production by month
PDQ LEASE REPORTS · REPORTED THROUGH AUG 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. From 14 leases it reported on; 9 are reported by other operators today.How production is reported →
- 2.87K
- bbl oil, last 12 reported months
- -9%
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 6.03K
- bbl oil since reporting began
12 months through Aug 2026 2,867 · prior 12 3,162(-9%)
Old Chief Oil, LLC: Oil by month.
Beyond the permit record
Operator of record and permit operator
A well's operator of record is the RRC's, and its permit operator is the one on its latest drilling permit; neither fills in for the other. Its wellbores of record are counted as its wells, with its live permits; a well it permitted that another operator runs, or that the RRC lists with no operator at all, is not. Each count opens the wells it counts. 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.
| Field | Wells | Producing |
|---|---|---|
| Somerset84560001 | 32 | 30 |
| Chicon Lake17668001 | 4 | 4 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status Active (A)
- Last filed Jun 3, 2026
- Oil operator
- Address
- 110 Broadway Ste 190
- San Antonio, TX 78205
- (210) 212-6969
- Officers and agents
- Calfas, Neil · Member,owner
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
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 by the operator that filed them, through the statewide reported-through month; disposal from UIC permits and H-10 reports. Oil includes condensate from gas leases and gas includes casinghead gas from oil leases, as the RRC totals them. Summary figures are rebuilt nightly. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/operators/tx/102306, documented in the API reference.