MULLINS "12A"

Oil · District 08 · Lease #40948

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

79k BBL

Cum Gas

48k MCF

casinghead

Wells

2

Production

2011-03 — 2026-01

Peak Month

2011-12

Production History

Cum Oil: 79,318 BBL Cum Gas: 48,135 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,308 BBL/mo

Di (annual)

27.1%

b-factor

0.3

EUR

80,941 BBL

R-squared

0.899

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2011-03 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 166 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC312,0002017-11-29
2DIAMONDBACK E&P LLC112,0002011-07-07