COX "9"

Oil · District 08 · Lease #36430

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

236k BBL

Cum Gas

329k MCF

casinghead

Wells

4

Production

2000-04 — 2025-01

Peak Month

2012-03

Production History

Cum Oil: 235,606 BBL Cum Gas: 329,227 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,692 BBL/mo

Di (annual)

19.8%

b-factor

0.0

EUR

163,143 BBL

R-squared

0.728

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2000-04 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 297 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4DIAMONDBACK E&P LLC212,0002011-07-15
3DIAMONDBACK E&P LLC212,0002011-07-14
1ENDEAVOR ENERGY RESOURCES L.P.211,0002000-06-09
2DIAMONDBACK E&P LLC111,0002000-04-20