LEASES · O-10-11966 · OIL · DISTRICT 08
Cummins, H. E. -C-
ReportingFormentera Operations LLC · Ector County · Goldsmith (Clear Fork) field
Cummins, H. E. -C- is an RRC oil lease (O-10-11966) in Ector County operated by Formentera Operations LLC, with 12 wells completed on it.
It has reported 588K barrels of oil and 1.74M mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 8.77K barrels of oil, up 14% on the year before; the lease peaked at 4.94K barrels in May 2010.
5 operators have filed production on it, most recently Formentera Operations LLC since November 2023.
- 588K
- bbl oil, all reported
- 1.74M
- mcf gas incl. casinghead
- 8.77K
- bbl oil, last 12 reported
- +14%
- vs the 12 before
- 12
- wells completed on it
- 4.94K
- peak month, bbl (May 2010)
PDQ LEASE REPORTS · FIRST JAN 1993 · 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 8,771 · prior 12 7,706(+14%)
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 10,241 · prior 12 11,161(-8%)
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.
- Marathon Oil CompanyJan 1993 → Apr 1995 · 28 mo
- Anadarko Petroleum CorporationMay 1995 → Mar 2007 · 143 mo
- Apache CorporationApr 2007 → Jun 2021 · 171 mo
- Slant Operating, LLCJul 2021 → Oct 2023 · 28 mo
- Formentera Operations LLCNov 2023 → Jul 2026 · 33 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
12
wells completed on the lease
- Shut IN
- 7
- Producing
- 3
- Plugged
- 2
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-10-11966, documented in the API reference.