MARSHALL "23"

Oil · District 10 · Lease #40404

Operator: SM ENERGY COMPANY

Cum Oil

146k BBL

Cum Gas

0 MCF

Wells

3

Production

2010-07 — 2026-03

Peak Month

2011-05

Production History

Cum Oil: 146,488 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,184 BBL/mo

Di (annual)

45.0%

b-factor

0.3

EUR

120,313 BBL

R-squared

0.905

type

hyperbolic

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2ENDEAVOR ENERGY RESOURCES L.P.312,0002016-05-05
1ENDEAVOR ENERGY RESOURCES L.P.312,0002016-04-12
4ENDEAVOR ENERGY RESOURCES L.P.112,0002011-05-11
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