POWELL "19"

Oil · District 7C · Lease #10154

Operator: GRIFFIN PETROLEUM COMPANY

Cum Oil

170k BBL

Cum Gas

516k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

2012-01

Production History

Cum Oil: 169,732 BBL Cum Gas: 515,998 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,559 BBL/mo

Di (annual)

36.1%

b-factor

0.6

EUR

104,612 BBL

R-squared

0.695

type

hyperbolic

Operator History (from monthly production reports)

2010-06 — 2026-07 COG OPERATING LLC 194 mo
2010-04 — 2010-05 GRIFFIN PETROLEUM COMPANY 2 mo
1993-01 — 2010-03 BYRD OPERATING COMPANY 207 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13COG OPERATING LLC110,7002011-04-29
2 XCOG OPERATING LLC211,3201989-12-07
1COG OPERATING LLC18,7501983-06-10
3COG OPERATING LLC210,3001982-11-01