GALLS UNIT

Oil · District 3 · Lease #21076

Operator: SANCHEZ-O'BRIEN OIL & GAS CORP.

Cum Oil

30k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2003-01

Peak Month

1997-04

Production History

Cum Oil: 30,208 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,226 BBL/mo

Di (annual)

106.3%

b-factor

0.5

EUR

26,694 BBL

R-squared

0.809

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SANCHEZ-O'BRIEN / TEXACO INC.29,6501997-03-13
1HSANCHEZ-O'BRIEN / TEXACO INC.29,6501997-03-13
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