VANGUARD

Oil · District 14 · Lease #7511

Operator: WYNN-CROSBY OPERATING, LTD.

Cum Oil

5k BBL

Cum Gas

0 MCF

Wells

2

Production

2003-12 — 2026-03

Peak Month

2005-05

Production History

Cum Oil: 5,460 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

77 BBL/mo

Di (annual)

20.9%

b-factor

0.1

EUR

4,793 BBL

R-squared

0.407

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RANGE PRODUCTION COMPANY211,7002004-05-04
1244RANGE PRODUCTION COMPANY211,7002004-05-04
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