LEASES · O-11-67253 · OIL · DISTRICT 8A
Masten Unit
ReportingTalis Energy Inc. · Cochran County · Levelland field
Masten Unit is an RRC oil lease (O-11-67253) in Cochran County operated by Talis Energy Inc., with 63 wells completed on it.
It has reported 965K barrels of oil and 3.75M mcf of gas since July 1994, last reporting volume in March 2026 (statewide data runs through April 2026).
The last 12 reported months total 11.8K barrels of oil, down 25% on the year before; the lease peaked at 4.02K barrels in January 2007.
7 operators have filed production on it, most recently Talis Energy Inc. since July 2025.
- 965K
- bbl oil, all reported
- 3.75M
- mcf gas incl. casinghead
- 11.8K
- bbl oil, last 12 reported
- -25%
- vs the 12 before
- 63
- wells completed on it
- 4.02K
- peak month, bbl (Jan 2007)
PDQ LEASE REPORTS · FIRST JUL 1994 · LAST VOLUME MAR 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 11,769 · prior 12 15,796(-25%)
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 913 · prior 12 10,453(-91%)
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.
- Union Oil Company of CaliforniaJul 1994 → May 2000 · 71 mo
- Pure Resources, L.P.Jun 2000 → Mar 2006 · 70 mo
- Chevron Midcontinent, L.P.Apr 2006 → Aug 2015 · 113 mo
- Steward Energy II, LLCSep 2015 → Apr 2020 · 56 mo
- RMB Operating LLCMay 2020 → Jun 2023 · 38 mo
- Oilwell Operators, Inc.Jul 2023 → Jun 2025 · 24 mo
- Talis Energy Inc.Jul 2025 → Jul 2026 · 13 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
63
wells completed on the lease
- Plugged
- 30
- NO Type on File
- 21
- NO Production
- 9
- Injection
- 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-11-67253, documented in the API reference.