BIG BRUSHY

Oil · District 7B · Lease #28217

Operator: UPHAM OIL & GAS COMPANY

Cum Oil

8k BBL

Cum Gas

128k MCF

casinghead

Wells

1

Production

1997-05 — 2004-12

Peak Month

1998-11

Production History

Cum Oil: 8,242 BBL Cum Gas: 128,053 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

344 BBL/mo

Di (annual)

70.0%

b-factor

0.0

EUR

5,883 BBL

R-squared

0.818

type

exponential

Operator History (from monthly production reports)

2001-09 — 2026-07 UPHAM OIL & GAS COMPANY 299 mo
1997-05 — 2001-08 UPHAM, CHESTER R., JR. 52 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1UPHAM OIL & GAS COMPANY14,5001996-12-16