STATE UNIVERSITY -AU-

Oil · District 08 · Lease #9559

Operator: XTO ENERGY INC.

Cum Oil

939k BBL

Cum Gas

602k MCF

casinghead

Wells

8

Production

1993-01 — 2008-12

Peak Month

2007-10

Production History

Cum Oil: 939,180 BBL Cum Gas: 602,024 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

22,228 BBL/mo

Di (annual)

48.2%

b-factor

0.4

EUR

895,992 BBL

R-squared

0.570

type

hyperbolic

Operator History (from monthly production reports)

2001-06 — 2009-04 XTO ENERGY INC. 95 mo
1997-02 — 2001-05 CROSS TIMBERS OPERATING COMPANY 52 mo
1993-01 — 1997-01 EXXON CORP. 49 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8XTO ENERGY INC.410,8002022-03-16
8HXTO ENERGY INC.410,8002022-03-16
7XTO ENERGY INC.810,7002013-01-09
7RXTO ENERGY INC.810,7002013-01-09
5XTO ENERGY INC.510,6002006-08-11
6XTO ENERGY INC.38,8502003-06-05
4XTO ENERGY INC.111,8502002-11-26
4HXTO ENERGY INC.111,8502002-11-26