CURTIS, E.C.

Oil · District 3 · Lease #19388

Operator: SANDEL OPERATING COMPANY

Cum Oil

143k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2026-03

Peak Month

1993-01

Production History

Cum Oil: 143,469 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,369 BBL/mo

Di (annual)

12.9%

b-factor

0.1

EUR

139,884 BBL

R-squared

0.598

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2CASHCO OIL COMPANY25,2001986-06-23
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