TUMBLER STATE E

Oil · District 08 · Lease #53165

Operator: U.S. ENERGY DEVELOPMENT CORP

Cum Oil

164k BBL

Cum Gas

556k MCF

casinghead

Wells

1

Production

2019-08 — 2026-04

Peak Month

2019-09

Production History

Cum Oil: 163,501 BBL Cum Gas: 556,443 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

17,651 BBL/mo

Di (annual)

448.7%

b-factor

0.7

EUR

139,920 BBL

R-squared

0.738

type

hyperbolic

Operator History (from monthly production reports)

2025-04 — 2026-07 U.S. ENERGY DEVELOPMENT CORP 16 mo
2019-08 — 2025-03 COG OPERATING LLC 68 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1874HU.S. ENERGY DEVELOPMENT CORP111,4002018-05-30