PULLEN UNIT

Oil · District 8A · Lease #68719

Operator: SCHALK OIL COMPANY, INC.

Cum Oil

25k BBL

Cum Gas

0 MCF

Wells

1

Production

2004-11 — 2014-02

Peak Month

2005-01

Production History

Cum Oil: 25,230 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

807 BBL/mo

Di (annual)

43.0%

b-factor

0.0

EUR

22,525 BBL

R-squared

0.835

type

exponential

Operator History (from monthly production reports)

2004-11 — 2026-07 SCHALK OIL COMPANY, INC. 261 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SCHALK OIL COMPANY INC.15,3002004-10-08