LEASES · O-4-9866 · OIL · DISTRICT 04
Hefte, Mary Tom Trust
No volume since May 1999Harper Hefte, Inc. · Nueces County · Agua Dulce (6240) field
Hefte, Mary Tom Trust is an RRC oil lease (O-4-9866) in Nueces County operated by Harper Hefte, Inc., with one well completed on it.
It has reported 9.94K barrels of oil and 49K mcf of gas since January 1993, last reporting volume in May 1999 (statewide data runs through April 2026).
The last 12 reported months total 477 barrels of oil, down 48% on the year before; the lease peaked at 368 barrels in December 1998.
- 9.94K
- bbl oil, all reported
- 49K
- mcf gas incl. casinghead
- 477
- bbl oil, last 12 reported
- -48%
- vs the 12 before
- 1
- wells completed on it
- 368
- peak month, bbl (Dec 1998)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME MAY 1999 · 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 477 · prior 12 914(-48%)
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 4,171 · prior 12 2,931(+42%)
Who reported it
Each run of months one operator filed the production report, oldest first.
- Harper Hefte, Inc.Jan 1993 → Oct 1999 · 82 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-4-9866, documented in the API reference.