< leases

AMERICAN NATIONAL LIFE INS.CO.

Oil · District 08 · Lease #37624

Operator: VANGUARD OPERATING, LLC

Fields: ESTES BLOCK 34 (PENN.)

Cum Oil

31k BBL

Cum Gas

2.1M MCF

casinghead

Wells

5

Production

2005-12 — 2026-04

Peak Month

2009-10

Production History

Cum Oil: 31,095 BBL Cum Gas: 2,095,173 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

945 BBL/mo

Di (annual)

147.0%

b-factor

0.5

EUR

14,939 BBL

R-squared

0.724

type

hyperbolic

Operator History (from monthly production reports)

2025-11 — 2026-07 CRESCENT ENERGY OPERATING, LLC 9 mo
2022-01 — 2025-10 CONTANGO RESOURCES, LLC 46 mo
2021-02 — 2021-12 CONTANGO RESOURCES, INC. 11 mo
2019-09 — 2021-01 GRIZZLY OP OF DELAWARE, LLC 17 mo
2015-11 — 2019-08 VANGUARD OPERATING, LLC 46 mo
2008-05 — 2015-10 EAGLE ROCK OPERATING COMPANY,LLC 90 mo
2005-12 — 2008-04 STANOLIND OPERATING CORP. 29 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5442-475-35408CRESCENT ENERGY OPERATING, LLC29,3002013-03-04
4242-475-34853CRESCENT ENERGY OPERATING, LLC29,4002012-05-29
4342-475-35356CRESCENT ENERGY OPERATING, LLC39,5002010-09-01
4842-475-35528CRESCENT ENERGY OPERATING, LLC19,2002010-01-14
4542-475-34851CRESCENT ENERGY OPERATING, LLC29,5002006-02-27