CIRCLE C NO. 1

Oil · District 03 · Lease #14200

Operator: LANDMARK EXPLORATION INC.

Cum Oil

20k BBL

Cum Gas

62k MCF

casinghead

Wells

1

Production

1993-01 — 2005-08

Peak Month

1993-04

Production History

Cum Oil: 19,630 BBL Cum Gas: 61,819 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,676 BBL/mo

Di (annual)

507.0%

b-factor

0.4

EUR

22,465 BBL

R-squared

0.644

type

hyperbolic

Operator History (from monthly production reports)

1997-03 — 2026-07 LANDMARK EXPLORATION INC. 353 mo
1993-01 — 1997-02 HARMONY EXPLORATION, INC. 50 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1LANDMARK EXPLORATION INC.312,0001997-04-01