LEASES · O-10-45146 · OIL · DISTRICT 08
Tatonka Unit
Surge Operating, LLC · Dawson County · Spraberry (Trend Area) field
Tatonka Unit is an RRC oil lease (O-10-45146) in Dawson County operated by Surge Operating, LLC, with one well completed on it.
It has reported 107K barrels of oil and 64.1K mcf of gas since January 2014, last reporting volume in April 2026 (statewide data runs through August 2026).
It reported 2.07K barrels of oil in the 12 months through August 2026, down 47% on the year before; the lease peaked at 9.62K barrels in January 2014.
4 operators have filed production on it, most recently Surge Operating, LLC since September 2022.
- 107K
- bbl oil, all reported
- 64.1K
- mcf gas incl. casinghead
- 2.07K
- bbl oil, 12 months through Aug 2026
- -47%
- vs the 12 before
- 1
- wells completed on it
- 9.62K
- peak month, bbl (Jan 2014)
PDQ LEASE REPORTS · FIRST JAN 2014 · LAST VOLUME APR 2026 · STATEWIDE DATA THROUGH AUG 2026
Oil by month
Barrels reported on Form PR for the whole lease. The latest months are revised upward as late reports arrive.
12 months through Aug 2026 2,069 · prior 12 3,878(-47%)
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.
12 months through Aug 2026 1,415 · prior 12 3,714(-62%)
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, with what it reported in them.
- SM Energy CompanyDec 2013 → Aug 2015 · 21 mo44.1K bbl oil · 36.7K mcf gas
- Thompson, J. CleoSep 2015 → Mar 2020 · 55 mo35.3K bbl oil · 15.2K mcf gas
- EOG Resources, Inc.Apr 2020 → Aug 2022 · 29 mo12.4K bbl oil · 2.23K mcf gas
- Surge Operating, LLCSep 2022 → Nov 2026 · 51 mo15.6K bbl oil · 9.91K mcf gas
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
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 Aug 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-10-45146, documented in the API reference.