LEASES · O-14-7515 · OIL · DISTRICT 10
Cooper 436
ReportingHighmark Energy Operating, LLC · Lipscomb County · Lipscomb (Cleveland) field
Cooper 436 is an RRC oil lease (O-14-7515) in Lipscomb County operated by Highmark Energy Operating, LLC, with 4 wells completed on it.
It has reported 221K barrels of oil and 2.44M mcf of gas since April 2004, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 2.58K barrels of oil, up 23% on the year before; the lease peaked at 16.2K barrels in October 2009.
2 operators have filed production on it, most recently Highmark Energy Operating, LLC since February 2022.
- 221K
- bbl oil, all reported
- 2.44M
- mcf gas incl. casinghead
- 2.58K
- bbl oil, last 12 reported
- +23%
- vs the 12 before
- 4
- wells completed on it
- 16.2K
- peak month, bbl (Oct 2009)
PDQ LEASE REPORTS · FIRST APR 2004 · 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 2,578 · prior 12 2,090(+23%)
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 52,183 · prior 12 42,757(+22%)
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.
- EOG Resources, Inc.Apr 2004 → Jan 2022 · 214 mo
- Highmark Energy Operating, LLCFeb 2022 → Jul 2026 · 54 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
4
wells completed on the lease
- Plugged
- 2
- Producing
- 1
- 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-14-7515, documented in the API reference.