SCHAFFER

Oil · District 14 · Lease #4982

Operator: STAHL PETROLEUM CO.

Cum Oil

112 BBL

Cum Gas

0 MCF

Wells

3

Production

1993-01 — 2003-08

Peak Month

1993-04

Production History

Cum Oil: 112 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

7 BBL/mo

Di (annual)

36.2%

b-factor

1.0

EUR

417 BBL

R-squared

0.498

type

hyperbolic

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3STAHL PETROLEUM CO.32,7281994-07-08
2LYRIC ENERGY, INC.12,7001981-12-31
1STAHL PETROLEUM CO.13,5001981-01-30
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