UNIVERSITY CITIES SERVICE

Oil · District 7C · Lease #454

Operator: RANGE PRODUCTION COMPANY

Cum Oil

71k BBL

Cum Gas

153k MCF

casinghead

Wells

10

Production

1993-01 — 2026-01

Peak Month

1998-01

Production History

Cum Oil: 70,655 BBL Cum Gas: 152,627 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

536 BBL/mo

Di (annual)

11.4%

b-factor

0.0

EUR

56,386 BBL

R-squared

0.783

type

exponential

Operator History (from monthly production reports)

2022-07 — 2026-07 DIGITAL OPERATING COMPANY LLC 49 mo
2004-10 — 2022-06 ENDEAVOR ENERGY RESOURCES L.P. 213 mo
1998-09 — 2004-09 RANGE PRODUCTION COMPANY 73 mo
1995-04 — 1998-08 LOMAK PRODUCTION COMPANY 41 mo
1995-03 — 1995-03 PARKER & PARSLEY DEVELOPMENT L.P 1 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10DIGITAL OPERATING COMPANY LLC12,7001997-10-13
11DIGITAL OPERATING COMPANY LLC12,7001997-10-13
9DIGITAL OPERATING COMPANY LLC12,8001980-01-10
142-105-80092DIGITAL OPERATING COMPANY LLC------
342-105-01298DIGITAL OPERATING COMPANY LLC------
442-105-01299DIGITAL OPERATING COMPANY LLC------
542-105-01300DIGITAL OPERATING COMPANY LLC------
642-105-02825DIGITAL OPERATING COMPANY LLC------
742-105-02826DIGITAL OPERATING COMPANY LLC------
842-105-02827DIGITAL OPERATING COMPANY LLC------