CYPERT A 57-51

Oil · District 08 · Lease #50031

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

677k BBL

Cum Gas

1.4M MCF

casinghead

Wells

2

Production

2018-03 — 2026-04

Peak Month

2019-03

Production History

Cum Oil: 676,515 BBL Cum Gas: 1,366,310 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

13,263 BBL/mo

Di (annual)

35.8%

b-factor

0.0

EUR

444,452 BBL

R-squared

0.371

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2018-03 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 82 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
111DIAMONDBACK E&P LLC211,0002019-03-19
212DIAMONDBACK E&P LLC311,0002017-06-27