VANGUARD

Oil · District 10 · Lease #7511

Operator: WYNN-CROSBY OPERATING, LTD.

Cum Oil

5k BBL

Cum Gas

54k MCF

casinghead

Wells

2

Production

2003-12 — 2026-03

Peak Month

2004-03

Production History

Cum Oil: 5,462 BBL Cum Gas: 53,593 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

77 BBL/mo

Di (annual)

20.9%

b-factor

0.1

EUR

4,794 BBL

R-squared

0.409

type

hyperbolic

Operator History (from monthly production reports)

2020-12 — 2026-07 SANDLOT OIL & GAS LLC 68 mo
2015-09 — 2020-11 D.W.P. PRODUCTION 63 mo
2012-01 — 2015-08 WYNN-CROSBY OPERATING, LTD. 44 mo
2003-12 — 2011-12 RANGE PRODUCTION COMPANY 97 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SANDLOT OIL & GAS LLC211,7002004-05-04
1244SANDLOT OIL & GAS LLC211,7002004-05-04