BUTLER -22-

Oil · District 08 · Lease #40275

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

55k BBL

Cum Gas

91k MCF

casinghead

Wells

1

Production

2010-03 — 2020-02

Peak Month

2010-06

Production History

Cum Oil: 54,982 BBL Cum Gas: 91,296 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

898 BBL/mo

Di (annual)

24.8%

b-factor

0.0

EUR

43,417 BBL

R-squared

0.528

type

exponential

Operator History (from monthly production reports)

2019-01 — 2025-07 DIAMONDBACK E&P LLC 79 mo
2010-03 — 2018-12 ENDEAVOR ENERGY RESOURCES L.P. 106 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1322DIAMONDBACK E&P LLC513,5002017-10-04