Petrora

LEASES · O-8-18925 · OIL · DISTRICT 7B

Isenhower

Reporting

Clausen, A. G. · Callahan County · Callahan County Regular field

Isenhower is an RRC oil lease (O-8-18925) in Callahan County operated by Clausen, A. G., with 15 wells completed on it.

It has reported 9.76K barrels of oil and 59 mcf of gas since January 1993, last reporting volume in March 2026 (statewide data runs through April 2026).

The last 12 reported months total 13 barrels of oil; the lease peaked at 617 barrels in May 1993.

4 operators have filed production on it, most recently Clausen, A. G. since May 2008.

9.76K
bbl oil, all reported
59
mcf gas incl. casinghead
13
bbl oil, last 12 reported
—
vs the 12 before
15
wells completed on it
617
peak month, bbl (May 1993)

PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME MAR 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 13 · prior 12 46(-72%)

01020302017201820192020202120222023202420252026

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 0 · prior 12 0

012017201820192020202120222023202420252026

Decline curve

A MODEL FITTED TO THE REPORTS, NOT A REPORT

An Arps hyperbolic curve fitted to the 30 reporting months of oil since the peak in Jul 2023. 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.

83%
first-year decline from the peak (nominal Di 253%)
0.4
b factor (hyperbolic)
0.72
fit R²
0
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 13 · prior 12 46(-72%)

010203020242025202620272028

Fitted hyperbolic curve from the Jul 2023 peak, dashed 24 months past the last report

Projected monthOct 2026Apr 2027Oct 2027Apr 2028
On the curve, bbl per month1100

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. A.E.N. Energy, Inc.Jan 1993 → Oct 1995 · 34 mo
  2. A.E.N. EnergyNov 1995 → Oct 1997 · 24 mo
  3. Crude Production CompanyNov 1997 → Apr 2008 · 126 mo
  4. Clausen, A. G.May 2008 → Jul 2026 · 219 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

15

wells completed on the lease

Plugged
6
Water Supply
3
Producing
3
Injection
2
NO Type on File
1

Operates them now

Clausen A. G.
14
Clausen, A. G.
1

Newest permits

All 15 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.

Developers: this page as JSON is GET /v1/data/leases/tx/o-8-18925, documented in the API reference.