LEASES · O-10-39672 · OIL · DISTRICT 08
CTL O'Brien et AL
ReportingDiamondback E&P LLC · Dawson County · Spraberry (Trend Area) field
Ctl O'Brien ET AL is an RRC oil lease (O-10-39672) in Dawson County operated by Diamondback E&P LLC, with 3 wells completed on it.
It has reported 110K barrels of oil and 73.3K mcf of gas since August 2009, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 2.91K barrels of oil, up 5% on the year before; the lease peaked at 2.2K barrels in October 2009.
3 operators have filed production on it, most recently Diamondback E&P LLC since October 2013.
- 110K
- bbl oil, all reported
- 73.3K
- mcf gas incl. casinghead
- 2.91K
- bbl oil, last 12 reported
- +5%
- vs the 12 before
- 3
- wells completed on it
- 2.2K
- peak month, bbl (Oct 2009)
PDQ LEASE REPORTS · FIRST AUG 2009 · 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 2,905 · prior 12 2,754(+5%)
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 333 · prior 12 1,082(-69%)
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.
- Mak-J Energy Partners(tx),ltd.Aug 2009 → Jan 2011 · 18 mo
- Element Petro Operating II, LLCFeb 2011 → Sep 2013 · 32 mo
- Diamondback E&P LLCOct 2013 → Jul 2026 · 154 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-10-39672, documented in the API reference.