HARTGROVE -E-

Oil · District 9 · Lease #6698

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

188k BBL

Cum Gas

0 MCF

Wells

11

Production

1993-01 — 2026-03

Peak Month

2006-09

Production History

Cum Oil: 188,197 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,629 BBL/mo

Di (annual)

19.6%

b-factor

0.0

EUR

99,694 BBL

R-squared

0.677

type

exponential

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10TMMARINER ENERGY, INC.19,0002007-01-29
11TMMARINER ENERGY, INC.19,0002005-11-29
9TMMARINER ENERGY, INC.19,0002005-11-29
6TAMARACK PETROLEUM COMPANY, INC.18,1501985-10-08
7TAMARACK PETROLEUM COMPANY, INC.18,1501985-10-08
8TAMARACK PETROLEUM COMPANY, INC.18,1501985-10-08
5TAMARACK PETROLEUM COMPANY, INC.18,1501985-10-02
142-383-30609--------
242-383-30625--------
342-383-30637--------
442-383-30636--------
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