HILL

Oil · District 11 · Lease #68584

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

433k BBL

Cum Gas

0 MCF

Wells

2

Production

2003-06 — 2026-03

Peak Month

2003-08

Production History

Cum Oil: 433,380 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,159 BBL/mo

Di (annual)

18.4%

b-factor

0.2

EUR

413,100 BBL

R-squared

0.862

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2SCHALK OIL COMPANY, INC.15,2002003-06-18
1SCHALK OIL COMPANY, INC.25,2002003-04-18
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