BROWN-ALTMAN -B-

Oil · District 08 · Lease #25317

Operator: XTO ENERGY INC.

Cum Oil

750k BBL

Cum Gas

2.3M MCF

casinghead

Wells

12

Production

1993-01 — 2026-04

Peak Month

1998-06

Production History

Cum Oil: 749,769 BBL Cum Gas: 2,310,151 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

17,673 BBL/mo

Di (annual)

79.4%

b-factor

0.7

EUR

679,503 BBL

R-squared

0.966

type

hyperbolic

Operator History (from monthly production reports)

2025-04 — 2026-07 HILCORP ENERGY COMPANY 16 mo
2012-01 — 2025-03 XTO ENERGY INC. 159 mo
2000-04 — 2011-12 EXXON MOBIL CORPORATION 141 mo
1993-01 — 2000-03 EXXON CORP. 87 mo

Wells (12)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
50HILCORP ENERGY COMPANY28,0002019-05-24
25HILCORP ENERGY COMPANY19,4752019-01-28
14HILCORP ENERGY COMPANY38,0001999-07-29
22HILCORP ENERGY COMPANY38,0001998-10-20
17HILCORP ENERGY COMPANY38,0001998-10-16
18HILCORP ENERGY COMPANY28,0001997-10-15
28HILCORP ENERGY COMPANY28,0001997-10-15
29HILCORP ENERGY COMPANY28,0001997-10-15
42HILCORP ENERGY COMPANY28,0001997-10-15
15HILCORP ENERGY COMPANY28,0001997-10-14
31HILCORP ENERGY COMPANY28,0001997-10-14
4342-495-02062HILCORP ENERGY COMPANY------