LEASES · O-1-11972 · OIL · DISTRICT 01
Long
ReportingOld Chief Oil, LLC · Bexar County · Somerset field
Long is an RRC oil lease (O-1-11972) in Bexar County operated by Old Chief Oil, LLC, with 13 wells completed on it.
It has reported 76.1K barrels of oil and 70 mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 1.13K barrels of oil, up 73% on the year before; the lease peaked at 540 barrels in August 1998.
4 operators have filed production on it, most recently Old Chief Oil, LLC since January 2025.
- 76.1K
- bbl oil, all reported
- 70
- mcf gas incl. casinghead
- 1.13K
- bbl oil, last 12 reported
- +73%
- vs the 12 before
- 13
- wells completed on it
- 540
- peak month, bbl (Aug 1998)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME APR 2026 · STATEWIDE DATA THROUGH APR 2026
Oil by month
Barrels reported on Form PR for the whole lease. The latest months are revised upward as late reports arrive.
Last 12 months 1,130 · prior 12 655(+73%)
Gas by month
Gas-well gas plus casinghead gas, mcf. On an oil lease all gas is reported as casinghead. The latest months are revised upward as late reports arrive.
Last 12 months 0 · prior 12 0
Decline curve
None shown. Petrora fits an Arps curve only when the last ten years of oil reports follow one decline closely enough to project (R² of 0.7 or better over at least a year since the peak). This lease's recent history does not, so a projection would be a guess dressed as a number.
Who reported it
Each run of months one operator filed the production report, oldest first.
- Dodson, Inc.Jan 1993 → Oct 1998 · 70 mo
- Everett OilNov 1998 → Apr 2015 · 198 mo
- Everett Oil, Inc.May 2015 → Dec 2024 · 116 mo
- Old Chief Oil, LLCJan 2025 → Jul 2026 · 19 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
13
wells completed on the lease
- Producing
- 13
Operates them now
About this data
Monthly oil, gas, and casinghead from the RRC PDQ production dump, which lags the reporting month by two to three months; figures shown through Apr 2026. Wells from completion reports; operator runs from who filed each month's report.
Developers: this page as JSON is GET /v1/data/leases/tx/o-1-11972, documented in the API reference.