LEASES · O-1-7057 · OIL · DISTRICT 01
Cosey-Dorn -A-
ReportingMillennium Exploration Co. LLC · Caldwell County · Luling-Branyon field
Cosey-Dorn -A- is an RRC oil lease (O-1-7057) in Caldwell County operated by Millennium Exploration CO. LLC, with 21 wells completed on it.
It has reported 15K barrels of oil and 20 mcf of gas since January 1993, last reporting volume in January 2026 (statewide data runs through April 2026).
The last 12 reported months total 217 barrels of oil, down 45% on the year before; the lease peaked at 317 barrels in November 2003.
3 operators have filed production on it, most recently Millennium Exploration CO. LLC since April 2025.
- 15K
- bbl oil, all reported
- 20
- mcf gas incl. casinghead
- 217
- bbl oil, last 12 reported
- -45%
- vs the 12 before
- 21
- wells completed on it
- 317
- peak month, bbl (Nov 2003)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME JAN 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 217 · prior 12 396(-45%)
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 0 · prior 12 0
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.
- Energypro, Inc.Jan 1993 → Nov 2001 · 107 mo
- Sotol Energy, Inc.Dec 2001 → Mar 2025 · 280 mo
- Millennium Exploration Co. LLCApr 2025 → Jul 2026 · 16 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
21
wells completed on the lease
- Plugged
- 16
- NO Type on File
- 2
- Shut IN
- 2
- 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 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-1-7057, documented in the API reference.