WILLIS "41"

Oil · District 08 · Lease #37215

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

191k BBL

Cum Gas

1.0M MCF

casinghead

Wells

4

Production

2003-08 — 2024-12

Peak Month

2005-04

Production History

Cum Oil: 190,879 BBL Cum Gas: 1,046,993 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,140 BBL/mo

Di (annual)

25.1%

b-factor

0.1

EUR

166,571 BBL

R-squared

0.887

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2003-08 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 257 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4DIAMONDBACK E&P LLC212,0002017-04-19
2DIAMONDBACK E&P LLC212,0002017-03-09
3DIAMONDBACK E&P LLC212,0002017-03-09
1ENDEAVOR ENERGY RESOURCES L.P.112,0002003-02-06