LEASES · O-10-49015 · OIL · DISTRICT 08
UL 21 Yellowtail
ReportingApache Corporation · Winkler County · Phantom (Wolfcamp) field
UL 21 Yellowtail is an RRC oil lease (O-10-49015) in Winkler County operated by Apache Corporation, with 3 wells completed on it.
It has reported 1.45M barrels of oil and 1.53M mcf of gas since April 2017, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 42.6K barrels of oil, up 203% on the year before; the lease peaked at 33.3K barrels in June 2017.
5 operators have filed production on it, most recently Apache Corporation since August 2024.
- 1.45M
- bbl oil, all reported
- 1.53M
- mcf gas incl. casinghead
- 42.6K
- bbl oil, last 12 reported
- +203%
- vs the 12 before
- 3
- wells completed on it
- 33.3K
- peak month, bbl (Jun 2017)
PDQ LEASE REPORTS · FIRST APR 2017 · 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 42,597 · prior 12 14,047(+203%)
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 57,281 · prior 12 17,356(+230%)
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.
- Forge Energy, LLCApr 2017 → Jan 2018 · 10 mo
- Oasis Petroleum Permian LLCFeb 2018 → Feb 2021 · 37 mo
- Percussion Petroleum Oper Ii,llcMar 2021 → Jul 2023 · 29 mo
- Callon Permian II, LLCAug 2023 → Jul 2024 · 12 mo
- Apache CorporationAug 2024 → Jul 2026 · 24 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
3
wells completed on the lease
- NO Type on File
- 2
- Producing
- 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-10-49015, documented in the API reference.