CYPERT B 57-51

Oil · District 08 · Lease #49926

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

685k BBL

Cum Gas

1.7M MCF

casinghead

Wells

2

Production

2018-02 — 2026-04

Peak Month

2019-03

Production History

Cum Oil: 685,093 BBL Cum Gas: 1,676,534 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

12,915 BBL/mo

Di (annual)

26.4%

b-factor

0.0

EUR

586,820 BBL

R-squared

0.336

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2018-02 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 83 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
122DIAMONDBACK E&P LLC211,0002019-03-19
221DIAMONDBACK E&P LLC111,0002017-08-01