GIBSON UNIT 28-21

Oil · District 08 · Lease #51030

Operator: CALLON PETROLEUM OPERATING CO

Cum Oil

1.8M BBL

Cum Gas

3.4M MCF

casinghead

Wells

7

Production

2018-08 — 2026-04

Peak Month

2021-10

Production History

Cum Oil: 1,812,947 BBL Cum Gas: 3,445,749 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

110,808 BBL/mo

Di (annual)

280.6%

b-factor

0.9

EUR

1,975,056 BBL

R-squared

0.976

type

hyperbolic

Operator History (from monthly production reports)

2024-08 — 2026-07 APACHE CORPORATION 24 mo
2018-08 — 2024-07 CALLON PETROLEUM OPERATING CO 72 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11SHAPACHE CORPORATION18,5002021-02-25
3AHAPACHE CORPORATION18,5002021-02-25
13SHAPACHE CORPORATION28,5002020-04-16
12SHAPACHE CORPORATION28,5002020-04-15
4AHAPACHE CORPORATION28,5002020-04-15
5AHAPACHE CORPORATION28,5002020-04-15
6AHAPACHE CORPORATION28,5002018-04-17