TUNNELL "8"

Oil · District 08 · Lease #38394

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

158k BBL

Cum Gas

244k MCF

casinghead

Wells

2

Production

2007-09 — 2023-02

Peak Month

2009-03

Production History

Cum Oil: 158,358 BBL Cum Gas: 243,979 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,033 BBL/mo

Di (annual)

18.5%

b-factor

0.0

EUR

131,740 BBL

R-squared

0.632

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2007-09 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 208 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC212,0002017-11-14
2DIAMONDBACK E&P LLC312,0002017-11-14