WILEY "4"

Oil · District 08 · Lease #40285

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

137k BBL

Cum Gas

474k MCF

casinghead

Wells

2

Production

2010-01 — 2026-04

Peak Month

2011-04

Production History

Cum Oil: 136,527 BBL Cum Gas: 474,344 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,380 BBL/mo

Di (annual)

66.8%

b-factor

0.4

EUR

99,372 BBL

R-squared

0.782

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2010-01 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 180 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC312,0002018-03-08
2DIAMONDBACK E&P LLC712,0002012-07-18