LEASES · O-10-35695 · OIL · DISTRICT 08
Grantham
ReportingOzark Exploration, Inc. · Howard County · Knott, West (Penn Reef) field
Grantham is an RRC oil lease (O-10-35695) in Howard County operated by Ozark Exploration, Inc., with one well completed on it.
It has reported 284K barrels of oil and 419K mcf of gas since March 1998, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 2.41K barrels of oil, up 19% on the year before; the lease peaked at 2.01K barrels in October 2004.
2 operators have filed production on it, most recently Ozark Exploration, Inc. since January 2017.
- 284K
- bbl oil, all reported
- 419K
- mcf gas incl. casinghead
- 2.41K
- bbl oil, last 12 reported
- +19%
- vs the 12 before
- 1
- wells completed on it
- 2.01K
- peak month, bbl (Oct 2004)
PDQ LEASE REPORTS · FIRST MAR 1998 · 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 2,412 · prior 12 2,019(+19%)
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 3,943 · prior 12 1,533(+157%)
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.
- Thompson, J. CleoMar 1998 → Dec 2016 · 226 mo
- Ozark Exploration, Inc.Jan 2017 → Jul 2026 · 115 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.
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