JONES

Oil · District 8A · Lease #67429

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

89k BBL

Cum Gas

12 MCF

casinghead

Wells

2

Production

1995-04 — 2026-03

Peak Month

2004-09

Production History

Cum Oil: 88,846 BBL Cum Gas: 12 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,813 BBL/mo

Di (annual)

52.4%

b-factor

0.5

EUR

77,107 BBL

R-squared

0.797

type

hyperbolic

Operator History (from monthly production reports)

1995-04 — 2026-07 SCHALK OIL COMPANY, INC. 376 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2SCHALK OIL COMPANY, INC.24,4002004-07-02
1SCHALK OIL COMPANY, INC.14,5001995-03-22