LEASES · O-10-40516 · OIL · DISTRICT 08
Kolb "31-5"
ReportingSabalo II Operating, LLC · Andrews County · Spraberry (Trend Area) field
Kolb "31-5" is an RRC oil lease (O-10-40516) in Andrews County operated by Sabalo II Operating, LLC, with 15 wells completed on it.
It has reported 1.02M barrels of oil and 2.15M mcf of gas since June 2010, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 33.3K barrels of oil, down 7% on the year before; the lease peaked at 13.1K barrels in March 2015.
5 operators have filed production on it, most recently Sabalo II Operating, LLC since June 2024.
- 1.02M
- bbl oil, all reported
- 2.15M
- mcf gas incl. casinghead
- 33.3K
- bbl oil, last 12 reported
- -7%
- vs the 12 before
- 15
- wells completed on it
- 13.1K
- peak month, bbl (Mar 2015)
PDQ LEASE REPORTS · FIRST JUN 2010 · 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 33,335 · prior 12 35,734(-7%)
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 102,191 · prior 12 93,801(+9%)
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.
- Williams, Clayton Energy, Inc.Jun 2010 → Mar 2017 · 82 mo
- NBL Permian LLCApr 2017 → Sep 2017 · 6 mo
- Throne Petroleum Resources LLCOct 2017 → Aug 2021 · 47 mo
- Montrose Operating LLCSep 2021 → May 2024 · 33 mo
- Sabalo II Operating, LLCJun 2024 → Jul 2026 · 26 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
15
wells completed on the lease
- Producing
- 12
- Shut IN
- 2
- 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-10-40516, documented in the API reference.