BIRK, C.

Oil · District 09 · Lease #17331

Operator: STEPHENS & JOHNSON OPERATING CO.

Cum Oil

23k BBL

Cum Gas

7 MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1994-07

Production History

Cum Oil: 23,070 BBL Cum Gas: 7 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

158 BBL/mo

Di (annual)

8.6%

b-factor

0.0

EUR

21,699 BBL

R-squared

0.502

type

exponential

Operator History (from monthly production reports)

2002-03 — 2026-07 HEYDRICK PETROLEUM COMPANY 293 mo
1993-09 — 2002-02 STEPHENS & JOHNSON OPERATING CO. 102 mo
1993-01 — 1993-08 S & J OPERATING CO. 8 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7HEYDRICK PETROLEUM COMPANY14,2102011-06-27
18HEYDRICK PETROLEUM COMPANY14,6501993-09-27