CHAPARRAL UNIT A4

Oil · District 08 · Lease #58556

Operator: CALLON PETROLEUM OPERATING CO

Cum Oil

272k BBL

Cum Gas

655k MCF

casinghead

Wells

1

Production

2022-06 — 2026-03

Peak Month

2022-07

Production History

Cum Oil: 272,028 BBL Cum Gas: 654,721 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

9,607 BBL/mo

Di (annual)

56.4%

b-factor

0.0

EUR

204,407 BBL

R-squared

0.393

type

exponential

Operator History (from monthly production reports)

2024-08 — 2026-07 APACHE CORPORATION 24 mo
2022-06 — 2024-07 CALLON PETROLEUM OPERATING CO 26 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6AHAPACHE CORPORATION38,9002021-09-20