LEASES · O-9-11803 · OIL · DISTRICT 7C
Powell "85"
COG Operating LLC · Upton County · Spraberry (Trend Area) field
Powell "85" is an RRC oil lease (O-9-11803) in Upton County operated by Cog Operating LLC, with one well completed on it.
It has reported 41.6K barrels of oil and 145K mcf of gas since January 1993, last reporting volume in October 2025 (statewide data runs through April 2026).
It reported 184 barrels of oil in the 12 months through April 2026, down 47% on the year before; the lease peaked at 310 barrels in September 1994.
6 operators have filed production on it, most recently Cog Operating LLC since November 2020.
- 41.6K
- bbl oil, all reported
- 145K
- mcf gas incl. casinghead
- 184
- bbl oil, 12 months through Apr 2026
- -47%
- vs the 12 before
- 1
- wells completed on it
- 310
- peak month, bbl (Sep 1994)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME OCT 2025 · 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 184 · prior 12 346(-47%)
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 3 · prior 12 230(-99%)
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.
- Costilla Petroleum CorporationJan 1993 → Jan 1997 · 49 mo
- Costilla Energy, Inc.Feb 1997 → Dec 1997 · 11 mo
- Concho Resources Inc.Jan 1998 → Jul 1999 · 19 mo
- Breck Operating Corp.Aug 1999 → Feb 2004 · 55 mo
- Endeavor Energy Resources L.P.Mar 2004 → Oct 2020 · 200 mo
- COG Operating LLCNov 2020 → Jul 2026 · 69 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.
Developers: this page as JSON is GET /v1/data/leases/tx/o-9-11803, documented in the API reference.