4-B RANCH

Oil · District 13 · Lease #28199

Operator: OAKRIDGE ENERGY, INC.

Cum Oil

616 BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 1997-01

Peak Month

1993-09

Production History

Cum Oil: 616 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

54 BBL/mo

Di (annual)

255.8%

b-factor

0.6

EUR

511 BBL

R-squared

0.644

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2SPRAGINS, ED15,3001991-06-04
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