< leases

LONG 398 -A-

Oil · District 09 · Lease #29082

Operator: KEY ENERGY OF COLORADO, INC.

Fields: RIGHT CHOICE (CHAPPEL)

Cum Oil

35k BBL

Cum Gas

2 MCF

casinghead

Wells

1

Production

1995-12 — 2010-02

Peak Month

1996-01

Production History

Cum Oil: 35,326 BBL Cum Gas: 2 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,125 BBL/mo

Di (annual)

164.1%

b-factor

0.3

EUR

22,117 BBL

R-squared

0.753

type

hyperbolic

Operator History (from monthly production reports)

2020-07 — 2026-07 ASSENT ENERGY PARTNERS, LLC 73 mo
2015-04 — 2020-06 EAGLE HYDROCARBONS INC. 63 mo
2014-09 — 2015-03 EAGLE HYDROCARBONS (TEXAS) INC. 7 mo
2013-12 — 2014-08 EAGLE ENERGY ACQUISITIONS LP 9 mo
1997-11 — 2013-11 KEY ENERGY OF COLORADO, INC. 193 mo
1995-12 — 1997-10 ENSERCH EXPLORATION, INC 23 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
442-197-31364ASSENT ENERGY PARTNERS LLC38,5001995-11-09