BROWN

Oil · District 8A · Lease #68259

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

72k BBL

Cum Gas

0 MCF

Wells

1

Production

2000-12 — 2026-04

Peak Month

2001-01

Production History

Cum Oil: 71,687 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

868 BBL/mo

Di (annual)

33.4%

b-factor

0.6

EUR

62,243 BBL

R-squared

0.380

type

hyperbolic

Operator History (from monthly production reports)

2000-12 — 2026-07 SCHALK OIL COMPANY, INC. 308 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SCHALK OIL COMPANY, INC.25,1002000-10-20