MASSIE 7-8 F

Oil · District 7C · Lease #21907

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

211k BBL

Cum Gas

1.1M MCF

casinghead

Wells

1

Production

2022-10 — 2026-04

Peak Month

2023-05

Production History

Cum Oil: 211,163 BBL Cum Gas: 1,092,326 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

14,280 BBL/mo

Di (annual)

144.0%

b-factor

0.6

EUR

273,819 BBL

R-squared

0.988

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2022-10 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 27 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
261DIAMONDBACK E&P LLC111,0002022-03-03