TUMBLER STATE D

Oil · District 08 · Lease #53298

Operator: U.S. ENERGY DEVELOPMENT CORP

Cum Oil

341k BBL

Cum Gas

1.5M MCF

casinghead

Wells

1

Production

2019-08 — 2026-04

Peak Month

2019-09

Production History

Cum Oil: 341,360 BBL Cum Gas: 1,455,364 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

26,402 BBL/mo

Di (annual)

307.2%

b-factor

0.9

EUR

435,957 BBL

R-squared

0.908

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
1854HU.S. ENERGY DEVELOPMENT CORP110,7002018-05-25