VALENTINE

Oil · District 7C · Lease #12950

Operator: MARSHALL & WINSTON, INC.

Cum Oil

105k BBL

Cum Gas

10k MCF

casinghead

Wells

3

Production

1993-01 — 2003-12

Peak Month

2002-04

Production History

Cum Oil: 105,144 BBL Cum Gas: 9,953 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,259 BBL/mo

Di (annual)

53.3%

b-factor

0.0

EUR

50,879 BBL

R-squared

0.723

type

exponential

Operator History (from monthly production reports)

1993-01 — 2008-05 MARSHALL & WINSTON, INC. 185 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HELLIFINO OPERATING LLC22,4001992-03-11
3MARSHALL & WINSTON INC.22,4001991-02-13
2MARSHALL & WINSTON INC.12,3001990-11-12