RUFFINO, PRESTON JR. "A" UNIT

Oil · District 3 · Lease #22847

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

55k BBL

Cum Gas

0 MCF

Wells

1

Production

1995-05 — 2008-01

Peak Month

1996-12

Production History

Cum Oil: 55,336 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,441 BBL/mo

Di (annual)

42.3%

b-factor

0.0

EUR

40,875 BBL

R-squared

0.675

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1UNION PACIFIC RESOURCES COMPANY38,5001995-04-20
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