MARY

Oil · District 10 · Lease #5393

Operator: RIO PETROLEUM, INC.

Cum Oil

843 BBL

Cum Gas

33k MCF

casinghead

Wells

1

Production

1993-01 — 1998-03

Peak Month

1993-01

Production History

Cum Oil: 843 BBL Cum Gas: 32,737 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

30 BBL/mo

Di (annual)

411.7%

b-factor

0.8

EUR

220 BBL

R-squared

0.458

type

hyperbolic

Operator History (from monthly production reports)

1996-02 — 1998-11 RIO PETROLEUM, INC. 34 mo
1993-01 — 1996-01 DENALI EXPLORATION, INC. 37 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RIO PETROLEUM INC.17,2501983-01-25