RUFUS "4"

Oil · District 08 · Lease #38687

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

68k BBL

Cum Gas

161k MCF

casinghead

Wells

1

Production

2008-02 — 2026-04

Peak Month

2009-07

Production History

Cum Oil: 67,859 BBL Cum Gas: 160,616 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,119 BBL/mo

Di (annual)

516.4%

b-factor

1.3

EUR

46,535 BBL

R-squared

0.796

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2008-02 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 203 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC112,0002007-10-10