MULLINS "12"

Oil · District 08 · Lease #39232

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

56k BBL

Cum Gas

25k MCF

casinghead

Wells

1

Production

2008-11 — 2025-06

Peak Month

2011-08

Production History

Cum Oil: 55,963 BBL Cum Gas: 25,036 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

864 BBL/mo

Di (annual)

88.7%

b-factor

1.2

EUR

55,236 BBL

R-squared

0.747

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2008-11 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 194 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2DIAMONDBACK E&P LLC312,0002017-11-28