COLE UNIT

Oil · District 7B · Lease #8420

Operator: SUBSURFACE PRODUCTION, INC.

Cum Oil

18k BBL

Cum Gas

1k MCF

casinghead

Wells

6

Production

1993-01 — 2024-08

Peak Month

2008-04

Production History

Cum Oil: 18,481 BBL Cum Gas: 1,412 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

134 BBL/mo

Di (annual)

14.9%

b-factor

0.0

EUR

10,703 BBL

R-squared

0.371

type

exponential

Operator History (from monthly production reports)

2023-02 — 2026-07 CEDAR RIDGE ENERGY, INC. 42 mo
2013-02 — 2023-01 SUBSURFACE PRODUCTION, INC. 120 mo
2008-03 — 2013-01 CEDAR RIDGE ENERGY, INC. 59 mo
1998-05 — 2008-02 RHONDA OPERATING COMPANY 118 mo
1993-01 — 1998-04 ARMOR PETROLEUM, INC. 64 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
A 4CEDAR RIDGE ENERGY INC.14,0001983-12-22
A 3CEDAR RIDGE ENERGY INC.14,0001983-11-14
A 1CEDAR RIDGE ENERGY INC.14,0001983-08-18
4342-253-02638CEDAR RIDGE ENERGY INC.------
6542-253-80769CEDAR RIDGE ENERGY INC.------
6742-253-03213CEDAR RIDGE ENERGY INC.------