TUNNELL "18"

Oil · District 08 · Lease #38376

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

155k BBL

Cum Gas

291k MCF

casinghead

Wells

3

Production

2007-08 — 2026-04

Peak Month

2015-11

Production History

Cum Oil: 154,525 BBL Cum Gas: 290,709 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,294 BBL/mo

Di (annual)

385.1%

b-factor

1.7

EUR

100,850 BBL

R-squared

0.700

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2007-08 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 209 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC212,0002017-06-28
2DIAMONDBACK E&P LLC212,0002017-06-28
3DIAMONDBACK E&P LLC112,5002015-05-12