UNIVERSITY -198-

Oil · District 10 · Lease #20292

Operator: XTO ENERGY INC.

Cum Oil

371k BBL

Cum Gas

0 MCF

Wells

6

Production

1993-01 — 2026-03

Peak Month

2001-10

Production History

Cum Oil: 370,852 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,656 BBL/mo

Di (annual)

33.1%

b-factor

0.3

EUR

186,439 BBL

R-squared

0.866

type

hyperbolic

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10XTO ENERGY INC.14,5202001-08-09
8CROSS TIMBERS OPERATING COMPANY14,8502001-01-05
7CROSS TIMBERS OPERATING COMPANY15,3001997-12-05
5ARCO OIL & GAS CO.34,8001981-09-21
342-003-10830--------
442-003-10851--------
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