LEASES · O-9-19564 · OIL · DISTRICT 7C
HASEL28 P2 Unit 1
COG Operating LLC · Upton County · Spraberry (Trend Area) field
Hasel28 P2 Unit 1 is an RRC oil lease (O-9-19564) in Upton County operated by Cog Operating LLC, with 4 wells completed on it.
It has reported 330K barrels of oil and 1.64M mcf of gas since March 2017, last reporting volume in August 2026 (statewide data runs through August 2026).
It reported 8K barrels of oil in the 12 months through August 2026, down 23% on the year before; the lease peaked at 23K barrels in April 2017.
- 330K
- bbl oil, all reported
- 1.64M
- mcf gas incl. casinghead
- 8K
- bbl oil, 12 months through Aug 2026
- -23%
- vs the 12 before
- 4
- wells completed on it
- 23K
- peak month, bbl (Apr 2017)
PDQ LEASE REPORTS · FIRST MAR 2017 · LAST VOLUME AUG 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 8,001 · prior 12 10,328(-23%)
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 115,057 · prior 12 162,099(-29%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 113 reporting months of oil since the peak in Apr 2017. The dashed line below is that curve, drawn over the months it was fitted to and then 24 months past the last report; where it parts from the columns is where the model stops describing the lease. It describes the trend of past reports. It does not know about recompletions, shut-ins, or new wells, and it is shown only when the lease reported within the last year and the curve explains most of the history.
- 76%
- first-year decline from the peak (nominal Di 294%)
- 0.9
- b factor (hyperbolic)
- 0.93
- fit R²
- 109K
- bbl remaining on the curve, to 1 per month
Oil, barrels reported months since the peak, with the fitted curve and its projection
Last 12 months 8,001 · prior 12 10,328(-23%)
Fitted hyperbolic curve from the Apr 2017 peak, dashed 24 months past the last report
| Projected month | Feb 2027 | Aug 2027 | Feb 2028 | Aug 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 537 | 509 | 484 | 461 |
Quoting a projected figure as if it were reported would be wrong; the reported figures are the ones in the charts and the table view. How production is reported →
Who reported it
Each run of months one operator filed the production report, oldest first, with what it reported in them.
- COG Operating LLCMar 2017 → Nov 2026 · 117 mo330K bbl oil · 1.64M mcf gas
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
4
wells completed on the lease
- Not on Schedule
- 3
- 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 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-9-19564, documented in the API reference.