LEASES · O-9-19446 · OIL · DISTRICT 7C
Mary 18-7A-A
ReportingPioneer Natural Res. USA, Inc. · Upton County · Spraberry (Trend Area) R 40 Exc field
Mary 18-7a-A is an RRC oil lease (O-9-19446) in Upton County operated by Pioneer Natural Res. USA, Inc., with one well completed on it.
It has reported 522K barrels of oil and 1.53M mcf of gas since December 2016, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 21.7K barrels of oil, down 3% on the year before; the lease peaked at 35.4K barrels in January 2017.
2 operators have filed production on it, most recently Pioneer Natural Res. USA, Inc. since February 2021.
- 522K
- bbl oil, all reported
- 1.53M
- mcf gas incl. casinghead
- 21.7K
- bbl oil, last 12 reported
- -3%
- vs the 12 before
- 1
- wells completed on it
- 35.4K
- peak month, bbl (Jan 2017)
PDQ LEASE REPORTS · FIRST DEC 2016 · 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 21,651 · prior 12 22,343(-3%)
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 87,762 · prior 12 140,103(-37%)
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.
- Parsley Energy Operations, LLCDec 2016 → Jan 2021 · 50 mo
- Pioneer Natural Res. USA, Inc.Feb 2021 → Jul 2026 · 66 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.
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