GLASS 134

Oil · District 10 · Lease #8033

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

395k BBL

Cum Gas

1.6M MCF

casinghead

Wells

3

Production

2009-09 — 2026-04

Peak Month

2010-01

Production History

Cum Oil: 394,686 BBL Cum Gas: 1,615,765 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

20,876 BBL/mo

Di (annual)

274.6%

b-factor

0.8

EUR

315,977 BBL

R-squared

0.742

type

hyperbolic

Operator History (from monthly production reports)

2022-02 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 54 mo
2009-09 — 2022-01 EOG RESOURCES, INC. 149 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HHIGHMARK ENERGY OPERATING, LLC19,0002012-04-23
2HHIGHMARK ENERGY OPERATING, LLC19,0002009-09-15
1HHIGHMARK ENERGY OPERATING, LLC29,0002009-05-29