< leases

AMERICAN NATIONAL LIFE INS.CO.

Oil · District 08 · Lease #37823

Operator: VANGUARD OPERATING, LLC

Fields: WARD-ESTES, N. (WICHITA-ALBANY)

Cum Oil

19k BBL

Cum Gas

639k MCF

casinghead

Wells

4

Production

2006-03 — 2024-02

Peak Month

2006-07

Production History

Cum Oil: 18,847 BBL Cum Gas: 638,682 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

314 BBL/mo

Di (annual)

119.8%

b-factor

1.0

EUR

12,941 BBL

R-squared

0.348

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
2006-03 — 2008-04 STANOLIND OPERATING CORP. 26 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4442-475-35534CRESCENT ENERGY OPERATING, LLC39,1002013-03-04
5442-475-35408CRESCENT ENERGY OPERATING, LLC29,3002013-03-04
4242-475-34853CRESCENT ENERGY OPERATING, LLC29,4002012-05-29
4742-475-34898CRESCENT ENERGY OPERATING LLC26,8002005-05-02