LEASES · O-2-11622 · OIL · DISTRICT 02
Fire Opal Unit AC
ReportingMarathon Oil EF LLC · Karnes County · Sugarkane (Austin Chalk) field
Fire Opal Unit AC is an RRC oil lease (O-2-11622) in Karnes County operated by Marathon Oil EF LLC, with one well completed on it.
It has reported 208K barrels of oil and 511K mcf of gas since October 2018, last reporting volume in December 2025 (statewide data runs through April 2026).
The last 12 reported months total 7.65K barrels of oil, up 83% on the year before; the lease peaked at 18.1K barrels in November 2018.
- 208K
- bbl oil, all reported
- 511K
- mcf gas incl. casinghead
- 7.65K
- bbl oil, last 12 reported
- +83%
- vs the 12 before
- 1
- wells completed on it
- 18.1K
- peak month, bbl (Nov 2018)
PDQ LEASE REPORTS · FIRST OCT 2018 · LAST VOLUME DEC 2025 · 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 7,646 · prior 12 4,168(+83%)
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 9,185 · prior 12 17,372(-47%)
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.
- Marathon Oil EF LLCOct 2018 → Jul 2026 · 94 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
1
wells completed on the lease
- NO Type on File
- 1
Operates them now
Newest permits
- 25536036 #1HJun 21, 2018
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.
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