CURTIS, E.C.

Oil · District 03 · Lease #19388

Operator: SANDEL OPERATING COMPANY

Cum Oil

143k BBL

Cum Gas

63k MCF

casinghead

Wells

1

Production

1993-01 — 2019-05

Peak Month

1993-01

Production History

Cum Oil: 143,469 BBL Cum Gas: 62,946 MCF

RRC production reported through Apr 2026 · recent months incomplete

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

Operator History (from monthly production reports)

2003-07 — 2026-04 SANDEL OPERATING COMPANY 274 mo
1999-07 — 2003-06 SANDEL ENERGY, INC. 48 mo
1998-03 — 1999-06 CASHCO, L.L.C. 16 mo
1993-01 — 1998-02 CASHCO OIL COMPANY 62 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2SANDEL OPERATING COMPANY25,2001986-06-23