SHIFFLETT STATE

Oil · District 08 · Lease #46377

Operator: PRIMEXX OPERATING CORPORATION

Cum Oil

194k BBL

Cum Gas

529k MCF

casinghead

Wells

1

Production

2014-12 — 2026-04

Peak Month

2015-01

Production History

Cum Oil: 194,076 BBL Cum Gas: 529,350 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,575 BBL/mo

Di (annual)

60.6%

b-factor

0.2

EUR

187,277 BBL

R-squared

0.644

type

hyperbolic

Operator History (from monthly production reports)

2024-08 — 2026-07 APACHE CORPORATION 24 mo
2021-10 — 2024-07 CALLON PETROLEUM OPERATING CO 34 mo
2014-12 — 2021-09 PRIMEXX OPERATING CORPORATION 82 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1901HAPACHE CORPORATION212,0002014-03-28