UNIVERSITY CITIES SERVICE

Oil · District 9 · Lease #454

Operator: RANGE PRODUCTION COMPANY

Cum Oil

71k BBL

Cum Gas

0 MCF

Wells

10

Production

1993-01 — 2026-03

Peak Month

1998-01

Production History

Cum Oil: 70,609 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

536 BBL/mo

Di (annual)

11.4%

b-factor

0.0

EUR

56,388 BBL

R-squared

0.781

type

exponential

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10LOMAK PRODUCTION COMPANY12,7001997-10-13
11LOMAK PRODUCTION COMPANY12,7001997-10-13
9PETROLEUM CORPORATION OF TEXAS12,8001980-01-10
142-105-80092--------
342-105-01298--------
442-105-01299--------
542-105-01300--------
642-105-02825--------
742-105-02826--------
842-105-02827--------
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