JONES A-9 UNIT

Oil · District 8A · Lease #69708

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

12k BBL

Cum Gas

0 MCF

Wells

1

Production

2010-12 — 2013-11

Peak Month

2011-01

Production History

Cum Oil: 12,254 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

893 BBL/mo

Di (annual)

93.0%

b-factor

0.0

EUR

11,523 BBL

R-squared

0.803

type

exponential

Operator History (from monthly production reports)

2010-12 — 2026-07 SCHALK OIL COMPANY, INC. 188 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9SCHALK OIL COMPANY INC.14,3502010-11-05