ANP -137-

Oil · District 7B · Lease #28331

Operator: RICHEY, RAY MANAGEMENT CO., INC.

Cum Oil

27k BBL

Cum Gas

24k MCF

casinghead

Wells

1

Production

1997-10 — 2003-02

Peak Month

1998-05

Production History

Cum Oil: 26,632 BBL Cum Gas: 24,437 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,594 BBL/mo

Di (annual)

254.5%

b-factor

0.5

EUR

24,029 BBL

R-squared

0.821

type

hyperbolic

Operator History (from monthly production reports)

2000-04 — 2019-12 RICHEY, RAY MANAGEMENT CO., INC. 237 mo
1997-10 — 2000-03 MITCHELL ENERGY CORPORATION 30 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RICHEY RAY MANAGEMENT CO. INC.15,4001997-09-17