MARSHALL "23"

Oil · District 08 · Lease #40404

Operator: SM ENERGY COMPANY

Cum Oil

147k BBL

Cum Gas

385k MCF

casinghead

Wells

3

Production

2010-07 — 2026-03

Peak Month

2011-08

Production History

Cum Oil: 146,770 BBL Cum Gas: 385,457 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,001 BBL/mo

Di (annual)

42.9%

b-factor

0.3

EUR

118,828 BBL

R-squared

0.888

type

hyperbolic

Operator History (from monthly production reports)

2024-06 — 2026-07 NEW HEIGHT ENERGY, LLC 26 mo
2017-01 — 2024-05 SM ENERGY COMPANY 89 mo
2016-03 — 2016-12 QSTAR OPERATING LLC 10 mo
2010-07 — 2016-02 ENDEAVOR ENERGY RESOURCES L.P. 68 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2NEW HEIGHT ENERGY, LLC312,0002016-05-05
1NEW HEIGHT ENERGY, LLC312,0002016-04-12
4NEW HEIGHT ENERGY, LLC112,0002011-05-11