CALHOUN, T.

Oil · District 11 · Lease #68697

Operator: ULTRA OIL & GAS, INC.

Cum Oil

70k BBL

Cum Gas

0 MCF

Wells

2

Production

2004-05 — 2026-03

Peak Month

2005-12

Production History

Cum Oil: 70,038 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,616 BBL/mo

Di (annual)

89.8%

b-factor

0.2

EUR

43,655 BBL

R-squared

0.658

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ULTRA OIL & GAS, INC.213,0002006-09-26
2ULTRA OIL & GAS, INC.212,5002005-07-11
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