LEASES · O-10-43342 · OIL · DISTRICT 08
Mabee 138
ReportingCOG Operating LLC · Martin County · Spraberry (Trend Area) field
Mabee 138 is an RRC oil lease (O-10-43342) in Martin County operated by Cog Operating LLC, with 5 wells completed on it.
It has reported 632K barrels of oil and 1.25M mcf of gas since December 2011, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 29K barrels of oil, down 15% on the year before; the lease peaked at 11.3K barrels in September 2014.
2 operators have filed production on it, most recently Cog Operating LLC since October 2016.
- 632K
- bbl oil, all reported
- 1.25M
- mcf gas incl. casinghead
- 29K
- bbl oil, last 12 reported
- -15%
- vs the 12 before
- 5
- wells completed on it
- 11.3K
- peak month, bbl (Sep 2014)
PDQ LEASE REPORTS · FIRST DEC 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 28,989 · prior 12 34,145(-15%)
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 45,383 · prior 12 52,245(-13%)
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.
- Reliance Energy, Inc.Dec 2011 → Sep 2016 · 58 mo
- COG Operating LLCOct 2016 → Jul 2026 · 118 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
5
wells completed on the lease
- Producing
- 4
- NO Type on File
- 1
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-10-43342, documented in the API reference.