UNDERWOOD "B"

Oil · District 5 · Lease #3617

Operator: SPARTAN OPERATING COMPANY, INC.

Cum Oil

87k BBL

Cum Gas

0 MCF

Wells

2

Production

1998-06 — 2026-03

Peak Month

2001-01

Production History

Cum Oil: 87,144 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,341 BBL/mo

Di (annual)

41.4%

b-factor

0.4

EUR

62,453 BBL

R-squared

0.755

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3LCT ENERGY, LP27,0002017-01-12
1SPARTAN OPERATING COMPANY, INC.16,0001998-03-18
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