MARCOM "12"

Oil · District 8A · Lease #68747

Operator: GREAT WESTERN DRILLING COMPANY

Cum Oil

189k BBL

Cum Gas

59k MCF

casinghead

Wells

2

Production

2005-01 — 2016-01

Peak Month

2005-10

Production History

Cum Oil: 189,203 BBL Cum Gas: 59,235 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,590 BBL/mo

Di (annual)

79.8%

b-factor

2.0

EUR

431,307 BBL

R-squared

0.799

type

hyperbolic

Operator History (from monthly production reports)

2005-01 — 2016-06 GREAT WESTERN DRILLING COMPANY 138 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2BASIN OIL & GAS OPERATING, LLC17,6002005-08-03
1BASIN OIL & GAS OPERATING, LLC18,0002004-09-01