THORNBERRY -13-

Oil · District 10 · Lease #26820

Operator: SUNRAY ENERGY, INC.

Cum Oil

99k BBL

Cum Gas

0 MCF

Wells

10

Production

1993-01 — 2026-03

Peak Month

2011-05

Production History

Cum Oil: 98,987 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,597 BBL/mo

Di (annual)

145.6%

b-factor

1.6

EUR

109,142 BBL

R-squared

0.894

type

hyperbolic

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12ENERGEN RESOURCES CORPORATION14,9002011-07-21
10ENERGEN RESOURCES CORPORATION14,9002011-01-13
11ENERGEN RESOURCES CORPORATION14,9002011-01-13
6ENERGEN RESOURCES CORPORATION14,9002011-01-13
8ENERGEN RESOURCES CORPORATION14,9002010-05-21
9ENERGEN RESOURCES CORPORATION14,9002010-05-21
4FRAC, INC.14,9501981-08-04
7FRAC, INC.14,9501981-08-04
3FRAC, INC.14,9501981-07-29
2FRAC, INC.14,9501981-06-30
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