LEAVERTON SEC. 458

Oil · District 8A · Lease #67388

Operator: XTO ENERGY INC.

Cum Oil

145k BBL

Cum Gas

60k MCF

casinghead

Wells

5

Production

1995-05 — 2005-10

Peak Month

1995-09

Production History

Cum Oil: 145,251 BBL Cum Gas: 60,309 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,274 BBL/mo

Di (annual)

160.7%

b-factor

1.8

EUR

249,193 BBL

R-squared

0.610

type

hyperbolic

Operator History (from monthly production reports)

2004-05 — 2006-05 XTO ENERGY INC. 25 mo
1995-05 — 2004-04 MOBIL PRODUCING TX. & N.M. INC. 108 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HILCORP ENERGY COMPANY27,8001995-08-07
7HILCORP ENERGY COMPANY27,9001995-08-07
4HILCORP ENERGY COMPANY37,8001995-07-10
5HILCORP ENERGY COMPANY47,8001995-07-10
3HILCORP ENERGY COMPANY27,9001995-04-17