LEASES · O-9-15912 · OIL · DISTRICT 7C
Chevron "43"
ReportingCOG Operating LLC · Upton County · Spraberry (Trend Area) field
Chevron "43" is an RRC oil lease (O-9-15912) in Upton County operated by Cog Operating LLC, with 22 wells completed on it.
It has reported 1.06M barrels of oil and 2.35M mcf of gas since January 2006, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 23.2K barrels of oil, down 4% on the year before; the lease peaked at 13.7K barrels in December 2010.
2 operators have filed production on it, most recently Cog Operating LLC since January 2010.
- 1.06M
- bbl oil, all reported
- 2.35M
- mcf gas incl. casinghead
- 23.2K
- bbl oil, last 12 reported
- -4%
- vs the 12 before
- 22
- wells completed on it
- 13.7K
- peak month, bbl (Dec 2010)
PDQ LEASE REPORTS · FIRST JAN 2006 · 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 23,159 · prior 12 24,005(-4%)
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 45,741 · prior 12 41,838(+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.
- Terrace Petroleum CorporationJan 2006 → Dec 2009 · 48 mo
- COG Operating LLCJan 2010 → Jul 2026 · 199 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
22
wells completed on the lease
- Producing
- 16
- Plugged
- 6
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-9-15912, documented in the API reference.