Petrora

LEASES · O-10-50561 · OIL · DISTRICT 08

Cook E 20B

Reporting

Vital Energy, Inc. · Glasscock County · Spraberry (Trend Area) field

Cook E 20b is an RRC oil lease (O-10-50561) in Glasscock County operated by Vital Energy, Inc., with 2 wells completed on it.

It has reported 508K barrels of oil and 1.51M mcf of gas since April 2018, last reporting volume in June 2025 (statewide data runs through April 2026).

The last 12 reported months total 6.49K barrels of oil, down 66% on the year before; the lease peaked at 32.5K barrels in May 2018.

3 operators have filed production on it, most recently Vital Energy, Inc. since February 2023.

508K
bbl oil, all reported
1.51M
mcf gas incl. casinghead
6.49K
bbl oil, last 12 reported
-66%
vs the 12 before
2
wells completed on it
32.5K
peak month, bbl (May 2018)

PDQ LEASE REPORTS · FIRST APR 2018 · LAST VOLUME JUN 2025 · 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 6,494 · prior 12 19,251(-66%)

020K40K20192020202120222023202420252026

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 34,464 · prior 12 96,057(-64%)

020K40K60K20192020202120222023202420252026

Decline curve

A MODEL FITTED TO THE REPORTS, NOT A REPORT

An Arps hyperbolic curve fitted to the 86 reporting months of oil since the peak in May 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.

69%
first-year decline from the peak (nominal Di 195%)
0.8
b factor (hyperbolic)
0.85
fit R²
202K
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 6,494 · prior 12 19,251(-66%)

020K40K2019202020212022202320242025202620272028

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

Projected monthJul 2026Jan 2027Jul 2027Jan 2028
On the curve, bbl per month1,2201,1381,0661,002

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. Pioneer Natural Res. USA, Inc.Apr 2018 → Nov 2019 · 20 mo
  2. Laredo Petroleum, Inc.Dec 2019 → Jan 2023 · 38 mo
  3. Vital Energy, Inc.Feb 2023 → Jan 2026 · 36 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

2

wells completed on the lease

Producing
1
Shut IN
1

Operates them now

Vital Energy Inc.
2

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.

Developers: this page as JSON is GET /v1/data/leases/tx/o-10-50561, documented in the API reference.