RICKER -35-

Oil · District 7C · Lease #4851

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

76k BBL

Cum Gas

631k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

2012-04

Production History

Cum Oil: 75,993 BBL Cum Gas: 631,187 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

469 BBL/mo

Di (annual)

8.2%

b-factor

0.0

EUR

67,186 BBL

R-squared

0.334

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2006-01 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 228 mo
1993-01 — 2005-12 CITATION OIL & GAS CORP. 156 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3DIAMONDBACK E&P LLC112,0002010-01-25
4DIAMONDBACK E&P LLC112,0002008-10-09
142-383-10699DIAMONDBACK E&P LLC------
242-383-10977DIAMONDBACK E&P LLC------