GRIGSBY -A-

Oil · District 09 · Lease #21440

Operator: QUATRO OIL AND GAS, INC.

Cum Oil

110k BBL

Cum Gas

79 MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

1998-08

Production History

Cum Oil: 109,662 BBL Cum Gas: 79 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,878 BBL/mo

Di (annual)

24.8%

b-factor

0.0

EUR

90,725 BBL

R-squared

0.631

type

exponential

Operator History (from monthly production reports)

1995-06 — 2026-07 QUATRO OIL AND GAS, INC. 374 mo
1993-01 — 1995-05 MITCHELL DRILLING CO. 29 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1AQUATRO OIL AND GAS, INC.14,2001984-05-23
2QUATRO OIL AND GAS, INC.14,5001982-08-06
1QUATRO OIL AND GAS, INC.14,8001981-05-14