JONES TRUST 359

Oil · District 10 · Lease #7842

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

114k BBL

Cum Gas

901k MCF

casinghead

Wells

3

Production

2008-02 — 2020-02

Peak Month

2009-04

Production History

Cum Oil: 114,275 BBL Cum Gas: 901,316 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,909 BBL/mo

Di (annual)

240.5%

b-factor

0.9

EUR

119,912 BBL

R-squared

0.964

type

hyperbolic

Operator History (from monthly production reports)

2022-02 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 54 mo
2008-02 — 2022-01 EOG RESOURCES, INC. 168 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HHIGHMARK ENERGY OPERATING, LLC19,0002008-05-15
3HHIGHMARK ENERGY OPERATING LLC29,0002008-04-16
1VHHIGHMARK ENERGY OPERATING LLC19,0002007-08-10