COATES, P. C. -64-

Oil · District 08 · Lease #25403

Operator: VAQUERO OPERATING

Cum Oil

21k BBL

Cum Gas

110k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

2000-03

Production History

Cum Oil: 20,819 BBL Cum Gas: 109,884 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

267 BBL/mo

Di (annual)

707.4%

b-factor

1.5

EUR

6,435 BBL

R-squared

0.619

type

hyperbolic

Operator History (from monthly production reports)

2022-10 — 2026-07 VAQUERO OPERATING 46 mo
1999-06 — 2022-09 O'RYAN OIL AND GAS 280 mo
1998-07 — 1999-05 HEADINGTON OIL COMPANY, L.P. 11 mo
1995-07 — 1998-06 HEADINGTON OIL COMPANY 36 mo
1993-01 — 1995-06 OZARK EXPLORATION, INC. 30 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1VAQUERO OPERATING114,0001978-02-09