TREGELLAS 675

Oil · District 10 · Lease #8341

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

51k BBL

Cum Gas

458k MCF

casinghead

Wells

3

Production

2011-05 — 2026-04

Peak Month

2020-07

Production History

Cum Oil: 50,555 BBL Cum Gas: 457,638 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

859 BBL/mo

Di (annual)

73.1%

b-factor

0.0

EUR

14,074 BBL

R-squared

0.755

type

exponential

Operator History (from monthly production reports)

2022-02 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 54 mo
2011-05 — 2022-01 EOG RESOURCES, INC. 129 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HHIGHMARK ENERGY OPERATING, LLC19,0002008-10-10
3HHIGHMARK ENERGY OPERATING, LLC19,0002006-03-28
2 HHIGHMARK ENERGY OPERATING, LLC19,0002005-04-13