CORTESE UNIT

Oil · District 03 · Lease #24536

Operator: XTO ENERGY INC.

Cum Oil

128k BBL

Cum Gas

379k MCF

casinghead

Wells

1

Production

2004-04 — 2023-08

Peak Month

2004-08

Production History

Cum Oil: 128,202 BBL Cum Gas: 378,602 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,302 BBL/mo

Di (annual)

35.3%

b-factor

0.1

EUR

124,498 BBL

R-squared

0.822

type

hyperbolic

Operator History (from monthly production reports)

2016-11 — 2026-06 HILCORP ENERGY COMPANY 116 mo
2008-12 — 2016-10 XTO ENERGY INC. 95 mo
2004-04 — 2008-11 HUNT, HASSIE EXPLORATION COMPANY 56 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1EL TRES EXPLORATION610,9182004-01-06