COWDEN -46-

Oil · District 10 · Lease #32413

Operator: QUAY VALLEY, INC.

Cum Oil

125k BBL

Cum Gas

0 MCF

Wells

4

Production

1993-01 — 2026-03

Peak Month

2008-09

Production History

Cum Oil: 124,716 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,275 BBL/mo

Di (annual)

23.8%

b-factor

0.5

EUR

109,887 BBL

R-squared

0.534

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA, INC.110,7002008-03-03
4PIONEER NATURAL RES. USA, INC.110,4252007-08-07
3MLC CO., INC.18,9001989-09-19
1CONTINENTAL U S EXPLORATION, INC29,8391984-11-20
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