TIPPETT -10-

Oil · District 08 · Lease #39861

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

152k BBL

Cum Gas

718k MCF

casinghead

Wells

3

Production

2010-01 — 2026-04

Peak Month

2011-10

Production History

Cum Oil: 151,865 BBL Cum Gas: 718,014 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,322 BBL/mo

Di (annual)

42.1%

b-factor

0.4

EUR

152,219 BBL

R-squared

0.784

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2010-01 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 180 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC613,2302018-05-10
4DIAMONDBACK E&P LLC212,0002018-05-10
3DIAMONDBACK E&P LLC212,2502017-12-20