GRAVY '18' UNIT

Oil · District 08 · Lease #43556

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

42k BBL

Cum Gas

136k MCF

casinghead

Wells

1

Production

2013-01 — 2026-04

Peak Month

2013-10

Production History

Cum Oil: 42,421 BBL Cum Gas: 135,892 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,566 BBL/mo

Di (annual)

143.1%

b-factor

0.8

EUR

41,910 BBL

R-squared

0.631

type

hyperbolic

Operator History (from monthly production reports)

2016-10 — 2026-07 DIAMONDBACK E&P LLC 118 mo
2013-01 — 2016-09 ENDEAVOR ENERGY RESOURCES L.P. 45 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC212,0002012-10-09