LEASES · O-11-70697 · OIL · DISTRICT 8A

Lazy Horse 581

Reporting

Riley Permian Operating Co, LLC · Yoakum County · Platang (San Andres) field

Lazy Horse 581 is an RRC oil lease (O-11-70697) in Yoakum County operated by Riley Permian Operating CO, LLC, with 2 wells completed on it.

It has reported 514K barrels of oil and 1.43M mcf of gas since May 2017, last reporting volume in April 2026 (statewide data runs through April 2026).

The last 12 reported months total 25.8K barrels of oil, down 22% on the year before; the lease peaked at 15.3K barrels in September 2018.

514K
bbl oil, all reported
1.43M
mcf gas incl. casinghead
25.8K
bbl oil, last 12 reported
-22%
vs the 12 before
2
wells completed on it
15.3K
peak month, bbl (Sep 2018)

PDQ LEASE REPORTS · FIRST MAY 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 25,769 · prior 12 32,863(-22%)

010K20K201820192020202120222023202420252026

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 175,405 · prior 12 196,449(-11%)

010K20K30K201820192020202120222023202420252026

Decline curve

A MODEL FITTED TO THE REPORTS, NOT A REPORT

An Arps hyperbolic curve fitted to the 92 reporting months of oil since the peak in Sep 2018. 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.

54%
first-year decline from the peak (nominal Di 138%)
1.4
b factor (hyperbolic)
0.83
fit R²
555K
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 25,769 · prior 12 32,863(-22%)

010K20K2019202020212022202320242025202620272028

Fitted hyperbolic curve from the Sep 2018 peak, dashed 24 months past the last report

Projected monthOct 2026Apr 2027Oct 2027Apr 2028
On the curve, bbl per month2,0691,9871,9131,845

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.

  1. Riley Permian Operating Co, LLCMay 2017 → Jul 2026 · 111 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

2

wells completed on the lease

Producing
1
NO Type on File
1

Newest permits

All 2 wells, searchable →

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.

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