DONGYING -27-

Oil · District 08 · Lease #43244

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

33k BBL

Cum Gas

82k MCF

casinghead

Wells

1

Production

2011-03 — 2022-09

Peak Month

2011-04

Production History

Cum Oil: 33,169 BBL Cum Gas: 81,781 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

458 BBL/mo

Di (annual)

16.5%

b-factor

0.1

EUR

36,905 BBL

R-squared

0.489

type

hyperbolic

Operator History (from monthly production reports)

2019-01 — 2026-07 DIAMONDBACK E&P LLC 91 mo
2011-03 — 2018-12 ENDEAVOR ENERGY RESOURCES L.P. 94 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ENDEAVOR ENERGY RESOURCES L.P.513,8002010-08-10