WILLIAMS "9"

Oil · District 08 · Lease #38882

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

129k BBL

Cum Gas

193k MCF

casinghead

Wells

2

Production

2008-07 — 2026-04

Peak Month

2011-03

Production History

Cum Oil: 129,340 BBL Cum Gas: 193,285 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,169 BBL/mo

Di (annual)

16.1%

b-factor

0.5

EUR

139,288 BBL

R-squared

0.465

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2008-07 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 198 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC212,0002015-12-01
2DIAMONDBACK E&P LLC212,0002015-12-01