LEASES · O-1-18268 · OIL · DISTRICT 01
Y-Bar Unit C
ReportingCastlerock EF Operating LLC · McMullen County · Eagleville (Eagle Ford-1) field
Y-Bar Unit C is an RRC oil lease (O-1-18268) in Mcmullen County operated by Castlerock EF Operating LLC, with 2 wells completed on it.
It has reported 212K barrels of oil and 191K mcf of gas since June 2014, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 5.65K barrels of oil, up 89% on the year before; the lease peaked at 18.5K barrels in October 2014.
2 operators have filed production on it, most recently Castlerock EF Operating LLC since August 2022.
- 212K
- bbl oil, all reported
- 191K
- mcf gas incl. casinghead
- 5.65K
- bbl oil, last 12 reported
- +89%
- vs the 12 before
- 2
- wells completed on it
- 18.5K
- peak month, bbl (Oct 2014)
PDQ LEASE REPORTS · FIRST JUN 2014 · 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 5,647 · prior 12 2,991(+89%)
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 3,625 · prior 12 3,747(-3%)
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.
- Murphy Expl. & Prod. Co. - USAJun 2014 → Jul 2022 · 98 mo
- Castlerock EF Operating LLCAug 2022 → Jul 2026 · 48 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Producing
- 1
- Shut IN
- 1
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.
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