LEASES · O-10-43007 · OIL · DISTRICT 08
East Keystone(san a Holt Unit)
ReportingFormentera Operations LLC · Winkler County · Keystone (San Andres) field
East Keystone(San A Holt Unit) is an RRC oil lease (O-10-43007) in Winkler County operated by Formentera Operations LLC, with one well completed on it.
It has reported 38.8K barrels of oil and 77.8K mcf of gas since August 2011, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 3.21K barrels of oil, down 17% on the year before; the lease peaked at 811 barrels in July 2021.
5 operators have filed production on it, most recently Formentera Operations LLC since May 2024.
- 38.8K
- bbl oil, all reported
- 77.8K
- mcf gas incl. casinghead
- 3.21K
- bbl oil, last 12 reported
- -17%
- vs the 12 before
- 1
- wells completed on it
- 811
- peak month, bbl (Jul 2021)
PDQ LEASE REPORTS · FIRST AUG 2011 · 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 3,212 · prior 12 3,866(-17%)
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 238 · prior 12 182(+31%)
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.
- Cimarex Energy Co.Aug 2011 → Dec 2012 · 17 mo
- Merit Energy CompanyJan 2013 → Nov 2016 · 47 mo
- Blackbeard Operating, LLCDec 2016 → May 2021 · 54 mo
- Saddleback Exploration, LLCJun 2021 → Apr 2024 · 35 mo
- Formentera Operations LLCMay 2024 → Jul 2026 · 27 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-10-43007, documented in the API reference.