LONG

Oil · District 8A · Lease #69854

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

19k BBL

Cum Gas

0 MCF

Wells

1

Production

2012-01 — 2022-12

Peak Month

2012-02

Production History

Cum Oil: 19,415 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

993 BBL/mo

Di (annual)

138.4%

b-factor

0.7

EUR

23,307 BBL

R-squared

0.892

type

hyperbolic

Operator History (from monthly production reports)

2012-01 — 2024-09 SCHALK OIL COMPANY, INC. 153 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4ASCHALK OIL COMPANY INC.15,4002011-11-04