SILVERBACK 13-8 UNIT 1

Oil · District 08 · Lease #54221

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

2.8M BBL

Cum Gas

7.2M MCF

casinghead

Wells

9

Production

2019-12 — 2026-04

Peak Month

2020-10

Production History

Cum Oil: 2,825,486 BBL Cum Gas: 7,225,285 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

182,236 BBL/mo

Di (annual)

321.9%

b-factor

1.1

EUR

4,091,839 BBL

R-squared

0.945

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2019-12 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 61 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
211DIAMONDBACK E&P LLC311,0002019-10-07
112DIAMONDBACK E&P LLC211,0002019-10-04
124DIAMONDBACK E&P LLC111,0002019-10-04
134DIAMONDBACK E&P LLC211,0002019-10-04
221DIAMONDBACK E&P LLC211,0002019-10-04
223DIAMONDBACK E&P LLC211,0002019-10-04
231DIAMONDBACK E&P LLC211,0002019-10-04
233DIAMONDBACK E&P LLC211,0002019-10-04
241DIAMONDBACK E&P LLC211,0002019-10-04