CHIEF 33-28

Oil · District 08 · Lease #50771

Operator: VITAL ENERGY, INC.

Cum Oil

339k BBL

Cum Gas

326k MCF

casinghead

Wells

1

Production

2018-02 — 2026-04

Peak Month

2020-04

Production History

Cum Oil: 338,918 BBL Cum Gas: 326,118 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,792 BBL/mo

Di (annual)

20.9%

b-factor

0.0

EUR

390,807 BBL

R-squared

0.606

type

exponential

Operator History (from monthly production reports)

2026-01 — 2026-07 CRESCENT ENERGY OPERATING, LLC 7 mo
2023-02 — 2025-12 VITAL ENERGY, INC. 35 mo
2021-07 — 2023-01 LAREDO PETROLEUM, INC. 19 mo
2018-02 — 2021-06 SABALO OPERATING, LLC 41 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4AHCRESCENT ENERGY OPERATING, LLC29,0002018-01-23