LEASES · O-9-21778 · OIL · DISTRICT 7C
El Guapo 'C'
Diamondback E&P LLC · Upton County · Spraberry (Trend Area) field
El Guapo 'C' is an RRC oil lease (O-9-21778) in Upton County operated by Diamondback E&P LLC, with one well completed on it.
It has reported 230K barrels of oil and 779K mcf of gas since February 2023, last reporting volume in April 2026 (statewide data runs through April 2026).
It reported 43.8K barrels of oil in the 12 months through April 2026, down 31% on the year before; the lease peaked at 14.9K barrels in May 2023.
2 operators have filed production on it, most recently Diamondback E&P LLC since February 2025.
- 230K
- bbl oil, all reported
- 779K
- mcf gas incl. casinghead
- 43.8K
- bbl oil, 12 months through Apr 2026
- -31%
- vs the 12 before
- 1
- wells completed on it
- 14.9K
- peak month, bbl (May 2023)
PDQ LEASE REPORTS · FIRST FEB 2023 · 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 43,753 · prior 12 63,626(-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 179,125 · prior 12 294,272(-39%)
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.
- TRP Operating LLCMar 2022 → Jan 2025 · 35 mo
- Diamondback E&P LLCFeb 2025 → Jul 2026 · 18 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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