STRAIN '21'

Oil · District 08 · Lease #45699

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

138k BBL

Cum Gas

234k MCF

casinghead

Wells

2

Production

2014-08 — 2026-04

Peak Month

2015-10

Production History

Cum Oil: 138,111 BBL Cum Gas: 234,074 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,439 BBL/mo

Di (annual)

25.3%

b-factor

0.0

EUR

115,685 BBL

R-squared

0.725

type

exponential

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2014-08 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 125 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2DIAMONDBACK E&P LLC112,5002015-05-21
1DIAMONDBACK E&P LLC112,0002014-05-17