WALKER, B. S.

Oil · District 08 · Lease #10080

Operator: XTO ENERGY INC.

Cum Oil

197k BBL

Cum Gas

540k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1998-01

Production History

Cum Oil: 196,795 BBL Cum Gas: 540,123 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,109 BBL/mo

Di (annual)

9.5%

b-factor

0.7

EUR

218,230 BBL

R-squared

0.735

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 (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12HILCORP ENERGY COMPANY212,5001999-01-22
15HILCORP ENERGY COMPANY110,1501985-09-13