LEASES · O-1-18562 · OIL · DISTRICT 01
John Holdsworth Unit Zav
Formentera Operations LLC · Zavala County · Pearsall (Buda, S.) field
John Holdsworth Unit Zav is an RRC oil lease (O-1-18562) in Zavala County operated by Formentera Operations LLC, with one well completed on it.
It has reported 61.5K barrels of oil and 80.8K mcf of gas since November 2015, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 2.36K barrels of oil in the 12 months through April 2026, down 31% on the year before; the lease peaked at 4.65K barrels in November 2015.
3 operators have filed production on it, most recently Formentera Operations LLC since February 2022.
- 61.5K
- bbl oil, all reported
- 80.8K
- mcf gas incl. casinghead
- 2.36K
- bbl oil, 12 months through Apr 2026
- -31%
- vs the 12 before
- 1
- wells completed on it
- 4.65K
- peak month, bbl (Nov 2015)
PDQ LEASE REPORTS · FIRST NOV 2015 · 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.
12 months through Apr 2026 2,357 · prior 12 3,433(-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.
12 months through Apr 2026 5,603 · prior 12 6,853(-18%)
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, LPSep 2015 → Mar 2016 · 7 mo
- SN Operating, LLCApr 2016 → Jan 2022 · 70 mo
- Formentera Operations LLCFeb 2022 → Jul 2026 · 54 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-1-18562, documented in the API reference.