LEASES · O-1-16466 · OIL · DISTRICT 01
Martin Mason Unit U
ReportingIneos USA Oil & Gas LLC · McMullen County · Eagleville (Eagle Ford-1) field
Martin Mason Unit U is an RRC oil lease (O-1-16466) in Mcmullen County operated by Ineos USA Oil & Gas LLC, with 2 wells completed on it.
It has reported 271K barrels of oil and 154K mcf of gas since November 2012, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 3.55K barrels of oil, down 15% on the year before; the lease peaked at 16.2K barrels in January 2013.
3 operators have filed production on it, most recently Ineos USA Oil & Gas LLC since April 2023.
- 271K
- bbl oil, all reported
- 154K
- mcf gas incl. casinghead
- 3.55K
- bbl oil, last 12 reported
- -15%
- vs the 12 before
- 2
- wells completed on it
- 16.2K
- peak month, bbl (Jan 2013)
PDQ LEASE REPORTS · FIRST NOV 2012 · 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 3,551 · prior 12 4,175(-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 3,002 · prior 12 3,453(-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.
- Chesapeake Operating, Inc.Nov 2012 → Oct 2014 · 24 mo
- Chesapeake Operating, L.L.C.Nov 2014 → Mar 2023 · 101 mo
- Ineos USA Oil & Gas LLCApr 2023 → Jul 2026 · 40 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Producing
- 1
- Shut IN
- 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-1-16466, documented in the API reference.