CHEEK UNIT A 28-21

Oil · District 08 · Lease #48490

Operator: CALLON PETROLEUM OPERATING CO

Cum Oil

1.4M BBL

Cum Gas

2.2M MCF

casinghead

Wells

4

Production

2017-03 — 2026-04

Peak Month

2017-05

Production History

Cum Oil: 1,357,766 BBL Cum Gas: 2,242,780 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

28,724 BBL/mo

Di (annual)

183.2%

b-factor

2.0

EUR

2,365,508 BBL

R-squared

0.342

type

hyperbolic

Operator History (from monthly production reports)

2024-08 — 2026-07 APACHE CORPORATION 24 mo
2017-03 — 2024-07 CALLON PETROLEUM OPERATING CO 89 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10SHAPACHE CORPORATION18,5002021-02-25
2AHAPACHE CORPORATION18,5002021-01-29
1AHAPACHE CORPORATION18,5002016-11-30
9SHAPACHE CORPORATION18,0002016-11-30