MAXWELL, J. W.

Oil · District 08 · Lease #7231

Operator: VANGUARD OPERATING, LLC

Fields: WARD, SOUTH

Cum Oil

204k BBL

Cum Gas

4k MCF

casinghead

Wells

11

Production

1993-01 — 2021-05

Peak Month

1995-04

Production History

Cum Oil: 203,691 BBL Cum Gas: 4,393 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,235 BBL/mo

Di (annual)

7.6%

b-factor

0.0

EUR

191,802 BBL

R-squared

0.636

type

exponential

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
2005-03 — 2008-04 STANOLIND OPERATING CORP. 38 mo
1993-01 — 2005-02 THREE-B OIL COMPANY, THE 146 mo

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4CRESCENT ENERGY OPERATING LLC13,1002008-05-01
12CRESCENT ENERGY OPERATING LLC13,1001982-03-16
11CRESCENT ENERGY OPERATING LLC12,8001981-09-04
10CRESCENT ENERGY OPERATING LLC13,0001980-12-03
9CONTANGO RESOURCES, INC.13,0001978-02-01
142-475-05272CRESCENT ENERGY OPERATING LLC------
1A42-475-80381CRESCENT ENERGY OPERATING LLC------
2W42-475-00341CRESCENT ENERGY OPERATING LLC------
542-475-00344CRESCENT ENERGY OPERATING LLC------
642-475-80384CRESCENT ENERGY OPERATING LLC------
842-475-05404CRESCENT ENERGY OPERATING LLC------