YATER "21"

Oil · District 08 · Lease #38735

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

84k BBL

Cum Gas

124k MCF

casinghead

Wells

2

Production

2008-03 — 2026-04

Peak Month

2015-07

Production History

Cum Oil: 83,799 BBL Cum Gas: 124,216 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,281 BBL/mo

Di (annual)

390.9%

b-factor

1.8

EUR

109,984 BBL

R-squared

0.702

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2008-03 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 202 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC212,0002017-06-28
2DIAMONDBACK E&P LLC112,0002014-12-04