UNIVERSITY 9 CEE

Oil · District 08 · Lease #35959

Operator: XTO ENERGY INC.

Cum Oil

240k BBL

Cum Gas

120k MCF

casinghead

Wells

2

Production

1999-01 — 2008-12

Peak Month

2007-12

Production History

Cum Oil: 239,977 BBL Cum Gas: 119,927 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

11,608 BBL/mo

Di (annual)

496.3%

b-factor

2.0

EUR

598,230 BBL

R-squared

0.800

type

hyperbolic

Operator History (from monthly production reports)

2001-06 — 2009-04 XTO ENERGY INC. 95 mo
1999-01 — 2001-05 CROSS TIMBERS OPERATING COMPANY 29 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7XTO ENERGY INC.310,8002021-11-19
E 7XTO ENERGY INC.310,8002021-11-19