ROST UNIT

Oil · District 03 · Lease #20553

Operator: U. S. OPERATING, INC.

Cum Oil

23k BBL

Cum Gas

535k MCF

casinghead

Wells

1

Production

1993-01 — 1999-10

Peak Month

1997-12

Production History

Cum Oil: 22,766 BBL Cum Gas: 535,311 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,295 BBL/mo

Di (annual)

623.6%

b-factor

0.2

EUR

15,400 BBL

R-squared

0.957

type

hyperbolic

Operator History (from monthly production reports)

1994-08 — 2000-08 UNION PACIFIC RESOURCES COMPANY 73 mo
1993-01 — 1994-07 U. S. OPERATING, INC. 19 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MAGNOLIA OIL & GAS OPERATING LLC59,5002001-09-06