LEASES · O-10-42007 · OIL · DISTRICT 08
Sonja
Diamondback E&P LLC · Midland County · Red Bluff (Brushy Canyon), Spraberry (Trend Area) field
Sonja is an RRC oil lease (O-10-42007) in Midland County operated by Diamondback E&P LLC, with 10 wells completed on it.
It has reported 346K barrels of oil and 386K mcf of gas since September 2011, last reporting volume in March 2026 (statewide data runs through April 2026).
It reported 6.99K barrels of oil in the 12 months through April 2026, down 25% on the year before; the lease peaked at 9.07K barrels in July 2013.
4 operators have filed production on it, most recently Diamondback E&P LLC since February 2019.
- 346K
- bbl oil, all reported
- 386K
- mcf gas incl. casinghead
- 6.99K
- bbl oil, 12 months through Apr 2026
- -25%
- vs the 12 before
- 10
- wells completed on it
- 9.07K
- peak month, bbl (Jul 2013)
PDQ LEASE REPORTS · FIRST SEP 2011 · LAST VOLUME MAR 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 6,988 · prior 12 9,265(-25%)
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 8,920 · prior 12 7,243(+23%)
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.
- RKI Exploration & Production LLCMar 2010 → Mar 2010 · 1 mo
- Summit Petroleum LLCAug 2011 → Feb 2012 · 7 mo
- Energen Resources CorporationMar 2012 → Jan 2019 · 83 mo
- Diamondback E&P LLCFeb 2019 → Jul 2026 · 90 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
10
wells completed on the lease
- Producing
- 4
- Shut In
- 3
- Plugged
- 3
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.
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