UNIVERSITY "9" -B-

Oil · District 10 · Lease #37013

Operator: XTO ENERGY INC.

Cum Oil

674 BBL

Cum Gas

0 MCF

Wells

1

Production

2003-01 — 2013-07

Peak Month

2003-01

Production History

Cum Oil: 674 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

163 BBL/mo

Di (annual)

291.8%

b-factor

0.0

EUR

669 BBL

R-squared

0.843

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2XTO ENERGY INC.310,8002011-06-14
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