ANP -135-

Oil · District 7B · Lease #28090

Operator: RICHEY, RAY MANAGEMENT CO., INC.

Cum Oil

45k BBL

Cum Gas

25k MCF

casinghead

Wells

2

Production

1997-01 — 1999-11

Peak Month

1997-09

Production History

Cum Oil: 44,928 BBL Cum Gas: 25,044 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,075 BBL/mo

Di (annual)

86.0%

b-factor

0.2

EUR

53,556 BBL

R-squared

0.944

type

hyperbolic

Operator History (from monthly production reports)

2000-04 — 2006-07 RICHEY, RAY MANAGEMENT CO., INC. 76 mo
1997-01 — 2000-03 MITCHELL ENERGY CORPORATION 39 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RICHEY RAY MANAGEMENT CO. INC.25,4001999-10-19
1LRICHEY RAY MANAGEMENT CO. INC.25,4001999-10-19