TUMBLER STATE B

Oil · District 08 · Lease #53101

Operator: U.S. ENERGY DEVELOPMENT CORP

Cum Oil

217k BBL

Cum Gas

896k MCF

casinghead

Wells

1

Production

2019-08 — 2026-04

Peak Month

2019-09

Production History

Cum Oil: 217,417 BBL Cum Gas: 896,431 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

16,944 BBL/mo

Di (annual)

633.6%

b-factor

1.5

EUR

437,732 BBL

R-squared

0.973

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
1873HU.S. ENERGY DEVELOPMENT CORP111,4002018-05-29