LEASES · O-1-18279 · OIL · DISTRICT 01
J&M Holdsworth Zav
ReportingBuffco Production Inc. · Zavala County · Briscoe Ranch (Eagleford) field
J&M Holdsworth Zav is an RRC oil lease (O-1-18279) in Zavala County operated by Buffco Production Inc., with 5 wells completed on it.
It has reported 599K barrels of oil and 334K mcf of gas since October 2014, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 279K barrels of oil, up 31% on the year before; the lease peaked at 41.1K barrels in June 2025.
4 operators have filed production on it, most recently Buffco Production Inc. since January 2024.
- 599K
- bbl oil, all reported
- 334K
- mcf gas incl. casinghead
- 279K
- bbl oil, last 12 reported
- +31%
- vs the 12 before
- 5
- wells completed on it
- 41.1K
- peak month, bbl (Jun 2025)
PDQ LEASE REPORTS · FIRST OCT 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 279,439 · prior 12 213,914(+31%)
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 183,648 · prior 12 60,906(+202%)
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.
- Exco Operating Company, LPOct 2014 → Mar 2016 · 18 mo
- SN Operating, LLCApr 2016 → Jan 2022 · 70 mo
- Formentera Operations LLCFeb 2022 → Dec 2023 · 23 mo
- Buffco Production Inc.Jan 2024 → Jul 2026 · 31 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
5
wells completed on the lease
- Producing
- 5
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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