MARCHBANKS PARTEE 28-33

Oil · District 08 · Lease #54088

Operator: HIGHPEAK ENERGY HOLDINGS, LLC

Cum Oil

90k BBL

Cum Gas

33k MCF

casinghead

Wells

1

Production

2019-11 — 2026-04

Peak Month

2025-09

Production History

Cum Oil: 90,492 BBL Cum Gas: 32,926 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

10,240 BBL/mo

Di (annual)

49.7%

b-factor

0.0

EUR

247,174 BBL

R-squared

0.889

type

exponential

Operator History (from monthly production reports)

2019-11 — 2026-07 HIGHPEAK ENERGY HOLDINGS, LLC 81 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
L 3HHIGHPEAK ENERGY HOLDINGS, LLC26,5002019-09-20