LEASES · O-9-16087 · OIL · DISTRICT 7C
Madolyn
ReportingSaxum Opco, LLC · Upton County · Spraberry (Trend Area) field
Madolyn is an RRC oil lease (O-9-16087) in Upton County operated by Saxum Opco, LLC, with 3 wells completed on it.
It has reported 94.2K barrels of oil and 583K mcf of gas since October 2006, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 1.49K barrels of oil, down 12% on the year before; the lease peaked at 2.44K barrels in January 2007.
6 operators have filed production on it, most recently Saxum Opco, LLC since October 2025.
- 94.2K
- bbl oil, all reported
- 583K
- mcf gas incl. casinghead
- 1.49K
- bbl oil, last 12 reported
- -12%
- vs the 12 before
- 3
- wells completed on it
- 2.44K
- peak month, bbl (Jan 2007)
PDQ LEASE REPORTS · FIRST OCT 2006 · 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 1,485 · prior 12 1,689(-12%)
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 11,346 · prior 12 9,521(+19%)
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.
- EXL Petroleum, LPOct 2006 → Dec 2007 · 15 mo
- Windsor Energy Group, L.L.C.Jan 2008 → Feb 2010 · 26 mo
- Windsor Permian LLCMar 2010 → Jun 2012 · 28 mo
- Diamondback E&P LLCJul 2012 → May 2021 · 107 mo
- Zarvona Energy LLCJun 2021 → Sep 2025 · 52 mo
- Saxum Opco, LLCOct 2025 → Jul 2026 · 10 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
3
wells completed on the lease
- Producing
- 2
- 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.
Developers: this page as JSON is GET /v1/data/leases/tx/o-9-16087, documented in the API reference.