MCDONALD -29- UNIT

Oil · District 08 · Lease #11712

Operator: VANGUARD OPERATING, LLC

Fields: WARD, SOUTH

Cum Oil

204k BBL

Cum Gas

4k MCF

casinghead

Wells

37

Production

1993-01 — 2022-01

Peak Month

1999-12

Production History

Cum Oil: 204,490 BBL Cum Gas: 4,180 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,325 BBL/mo

Di (annual)

13.7%

b-factor

0.2

EUR

140,856 BBL

R-squared

0.655

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

Wells (37)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
401CONTANGO RESOURCES, LLC13,1502008-02-11
513CRESCENT ENERGY OPERATING LLC13,0001983-05-09
45CRESCENT ENERGY OPERATING LLC13,0001982-08-20
512CRESCENT ENERGY OPERATING LLC13,0001982-02-11
511CRESCENT ENERGY OPERATING LLC13,2001981-06-30
207CRESCENT ENERGY OPERATING LLC13,2001980-03-05
305CRESCENT ENERGY OPERATING LLC13,2001979-12-03
206CONTANGO RESOURCES, LLC23,0001979-08-06
510CRESCENT ENERGY OPERATING LLC12,4001978-02-10
509CRESCENT ENERGY OPERATING LLC12,4001977-06-20
10142-475-00057CRESCENT ENERGY OPERATING LLC------
102W42-475-00056CRESCENT ENERGY OPERATING LLC------
10342-475-81653CRESCENT ENERGY OPERATING LLC------
10442-475-00054CRESCENT ENERGY OPERATING LLC------
105W42-475-00053CRESCENT ENERGY OPERATING LLC------
10642-475-00058CRESCENT ENERGY OPERATING LLC------
10742-475-00059CRESCENT ENERGY OPERATING LLC------
108W42-475-00060CRESCENT ENERGY OPERATING LLC------
10942-475-00061CRESCENT ENERGY OPERATING LLC------
11042-475-81658CRESCENT ENERGY OPERATING LLC------
112W42-475-00063CRESCENT ENERGY OPERATING LLC------
11342-475-30787CRESCENT ENERGY OPERATING LLC------
201A42-475-00065CRESCENT ENERGY OPERATING LLC------
20242-475-00798CRESCENT ENERGY OPERATING LLC------
203W42-475-00797CRESCENT ENERGY OPERATING LLC------
20542-475-00066CRESCENT ENERGY OPERATING LLC------
30142-475-03550CRESCENT ENERGY OPERATING LLC------
302W42-475-03551CRESCENT ENERGY OPERATING LLC------
30342-475-03048CRESCENT ENERGY OPERATING LLC------
30442-475-30758CRESCENT ENERGY OPERATING LLC------
40242-475-00801CRESCENT ENERGY OPERATING LLC------
403W42-475-00067CRESCENT ENERGY OPERATING LLC------
40442-475-30785CRESCENT ENERGY OPERATING LLC------
50442-475-00068CRESCENT ENERGY OPERATING LLC------
505W42-475-04059CRESCENT ENERGY OPERATING LLC------
507W42-475-05148CRESCENT ENERGY OPERATING LLC------
50842-475-00069CRESCENT ENERGY OPERATING LLC------