SCHUMANN 112

Oil · District 10 · Lease #8177

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

99k BBL

Cum Gas

867k MCF

casinghead

Wells

1

Production

2010-06 — 2026-04

Peak Month

2010-08

Production History

Cum Oil: 98,671 BBL Cum Gas: 866,777 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,055 BBL/mo

Di (annual)

85.7%

b-factor

0.6

EUR

94,967 BBL

R-squared

0.835

type

hyperbolic

Operator History (from monthly production reports)

2022-02 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 54 mo
2010-06 — 2022-01 EOG RESOURCES, INC. 140 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HHIGHMARK ENERGY OPERATING, LLC29,0002010-02-09