TYSON 447

Oil · District 10 · Lease #8542

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

82k BBL

Cum Gas

1.4M MCF

casinghead

Wells

2

Production

2012-05 — 2026-04

Peak Month

2012-05

Production History

Cum Oil: 81,800 BBL Cum Gas: 1,370,924 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,522 BBL/mo

Di (annual)

243.2%

b-factor

1.2

EUR

80,751 BBL

R-squared

0.717

type

hyperbolic

Operator History (from monthly production reports)

2022-02 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 54 mo
2012-05 — 2022-01 EOG RESOURCES, INC. 117 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5HHIGHMARK ENERGY OPERATING, LLC19,0002012-06-08
4HHIGHMARK ENERGY OPERATING, LLC19,0002012-01-04