LEASES · O-14-7764 · OIL · DISTRICT 10
Cooper 358
ReportingHighmark Energy Operating, LLC · Lipscomb County · Lipscomb (Cleveland) field
Cooper 358 is an RRC oil lease (O-14-7764) in Lipscomb County operated by Highmark Energy Operating, LLC, with 4 wells completed on it.
It has reported 277K barrels of oil and 3.03M mcf of gas since May 2007, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 2.27K barrels of oil, level with the year before; the lease peaked at 12.8K barrels in October 2008.
2 operators have filed production on it, most recently Highmark Energy Operating, LLC since February 2022.
- 277K
- bbl oil, all reported
- 3.03M
- mcf gas incl. casinghead
- 2.27K
- bbl oil, last 12 reported
- +0%
- vs the 12 before
- 4
- wells completed on it
- 12.8K
- peak month, bbl (Oct 2008)
PDQ LEASE REPORTS · FIRST MAY 2007 · 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 2,267 · prior 12 2,271(0%)
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 45,665 · prior 12 48,350(-6%)
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.May 2007 → Jan 2022 · 177 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
- Producing
- 4
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-14-7764, documented in the API reference.