LEASES · O-3-27457 · OIL · DISTRICT 03
Mumford EF
ReportingWildfire Energy Operating LLC · Robertson County · Giddings (Eagleford) field
Mumford EF is an RRC oil lease (O-3-27457) in Robertson County operated by Wildfire Energy Operating LLC, with one well completed on it.
It has reported 262K barrels of oil and 81.5K mcf of gas since September 2018, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 12.6K barrels of oil, down 19% on the year before; the lease peaked at 18.5K barrels in October 2018.
3 operators have filed production on it, most recently Wildfire Energy Operating LLC since March 2023.
- 262K
- bbl oil, all reported
- 81.5K
- mcf gas incl. casinghead
- 12.6K
- bbl oil, last 12 reported
- -19%
- vs the 12 before
- 1
- wells completed on it
- 18.5K
- peak month, bbl (Oct 2018)
PDQ LEASE REPORTS · FIRST SEP 2018 · LAST VOLUME MAR 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 12,593 · prior 12 15,611(-19%)
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 6,830 · prior 12 12,854(-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.
- Wildhorse Resources Mngt Co, LLCSep 2018 → May 2019 · 9 mo
- Chesapeake Operating, L.L.C.Jun 2019 → Feb 2023 · 45 mo
- Wildfire Energy Operating LLCMar 2023 → Jul 2026 · 41 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
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-3-27457, documented in the API reference.