ROBINSON A

Oil · District 11 · Lease #68703

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

9k BBL

Cum Gas

0 MCF

Wells

1

Production

2004-03 — 2018-05

Peak Month

2004-12

Production History

Cum Oil: 9,453 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

355 BBL/mo

Di (annual)

63.1%

b-factor

0.1

EUR

7,469 BBL

R-squared

0.861

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3SCHALK OIL COMPANY, INC.15,3002004-01-30
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