LEASES · O-9-11412 · OIL · DISTRICT 7C
McMaster "C"
Pioneer Natural Res. USA, Inc. · Reagan County · Spraberry (Trend Area) field
Mcmaster "C" is an RRC oil lease (O-9-11412) in Reagan County operated by Pioneer Natural Res. USA, Inc., with 2 wells completed on it.
It has reported 34.5K barrels of oil and 409K mcf of gas since the record begins in January 1993, last reporting volume in August 2026 (statewide data runs through August 2026).
It reported 118 barrels of oil in the 12 months through August 2026, down 60% on the year before; the lease peaked at 236 barrels in November 1996.
4 operators have filed production on it, most recently Pioneer Natural Res. USA, Inc. since June 2021.
- 34.5K
- bbl oil, all reported
- 409K
- mcf gas incl. casinghead
- 118
- bbl oil, 12 months through Aug 2026
- -60%
- vs the 12 before
- 2
- wells completed on it
- 236
- peak month, bbl (Nov 1996)
PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH · LAST VOLUME AUG 2026 · STATEWIDE DATA THROUGH AUG 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 Aug 2026 118 · prior 12 293(-60%)
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 Aug 2026 260 · prior 12 810(-68%)
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, with what it reported in them.
- Cox, John L.Jan 1993 → Sep 2003 · 129 mo19.5K bbl oil · 280K mcf gas
- JM Cox Resources, L.P.Oct 2003 → Aug 2018 · 179 mo11.4K bbl oil · 119K mcf gas
- DE3 Operating LLCSep 2018 → May 2021 · 33 mo1.18K bbl oil · 38 mcf gas
- Pioneer Natural Res. USA, Inc.Jun 2021 → Nov 2026 · 66 mo2.44K bbl oil · 10.4K mcf gas
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Plugged
- 1
- Producing
- 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 Aug 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-9-11412, documented in the API reference.