LEASES · O-1-10904 · OIL · DISTRICT 01
McOsker
No volume since Apr 1998Great Plains Resources, Inc. · Bexar County · Somerset field
Mcosker is an RRC oil lease (O-1-10904) in Bexar County operated by Great Plains Resources, Inc., with 3 wells completed on it.
It has reported 355 barrels of oil and 4 mcf of gas since January 1993, last reporting volume in April 1998 (statewide data runs through April 2026).
No volume was reported in the last 12 months; the last was in April 1998.
4 operators have filed production on it, most recently Great Plains Resources, Inc. since June 1996.
- 355
- bbl oil, all reported
- 4
- mcf gas incl. casinghead
- 0
- bbl oil, last 12 reported
- —
- vs the 12 before
- 3
- wells completed on it
- 109
- peak month, bbl (Jul 1997)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME APR 1998 · 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 0 · prior 12 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 0 · prior 12 0
Who reported it
Each run of months one operator filed the production report, oldest first.
- Duncan ProductionJan 1993 → Apr 1993 · 4 mo
- Caspen Operating CompanyMay 1993 → Mar 1995 · 23 mo
- Ginco Operating Co.Apr 1995 → May 1996 · 14 mo
- Great Plains Resources, Inc.Jun 1996 → Jul 2026 · 362 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
3
wells completed on the lease
- Plugged
- 3
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-1-10904, documented in the API reference.