JACK STATE B UNIT

Oil · District 08 · Lease #51873

Operator: U.S. ENERGY DEVELOPMENT CORP

Cum Oil

745k BBL

Cum Gas

1.7M MCF

casinghead

Wells

2

Production

2019-02 — 2026-04

Peak Month

2019-03

Production History

Cum Oil: 744,513 BBL Cum Gas: 1,734,925 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

35,518 BBL/mo

Di (annual)

141.4%

b-factor

0.9

EUR

1,118,105 BBL

R-squared

0.905

type

hyperbolic

Operator History (from monthly production reports)

2025-04 — 2026-07 U.S. ENERGY DEVELOPMENT CORP 16 mo
2019-02 — 2025-03 COG OPERATING LLC 74 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3670HU.S. ENERGY DEVELOPMENT CORP211,2002018-03-29
3672HU.S. ENERGY DEVELOPMENT CORP211,2002018-03-29