WINDOWPANE 4

Oil · District 08 · Lease #47471

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

72k BBL

Cum Gas

139k MCF

casinghead

Wells

1

Production

2016-02 — 2025-12

Peak Month

2016-06

Production History

Cum Oil: 72,032 BBL Cum Gas: 138,557 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,187 BBL/mo

Di (annual)

72.2%

b-factor

0.7

EUR

91,299 BBL

R-squared

0.749

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2016-02 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 107 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC212,0002015-11-13