STATE UNIVERSITY -AT-

Oil · District 10 · Lease #9844

Operator: XTO ENERGY INC.

Cum Oil

945k BBL

Cum Gas

0 MCF

Wells

8

Production

1993-01 — 2009-04

Peak Month

2005-12

Production History

Cum Oil: 945,064 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

19,779 BBL/mo

Di (annual)

64.0%

b-factor

0.0

EUR

370,708 BBL

R-squared

0.910

type

exponential

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5XTO ENERGY INC.312,0002021-11-19
5HXTO ENERGY INC.312,0002021-11-19
8XTO ENERGY INC.611,4002010-03-30
8HXTO ENERGY INC.611,4002010-03-30
3XTO ENERGY INC.311,8132010-01-29
3HXTO ENERGY INC.311,8132010-01-29
1 TXTO ENERGY INC.110,1802003-08-21
7XTO ENERGY INC.710,8002000-09-05
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