UNIVERSITY 42-23

Oil · District 7C · Lease #17258

Operator: APPROACH OPERATING LLC

Cum Oil

90k BBL

Cum Gas

723k MCF

casinghead

Wells

9

Production

2010-05 — 2013-09

Peak Month

2010-10

Production History

Cum Oil: 90,330 BBL Cum Gas: 722,850 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,289 BBL/mo

Di (annual)

94.2%

b-factor

0.4

EUR

111,024 BBL

R-squared

0.845

type

hyperbolic

Operator History (from monthly production reports)

2010-05 — 2015-12 APPROACH OPERATING LLC 68 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
14ZARVONA ENERGY LLC19,0002011-01-07
15ZARVONA ENERGY LLC19,0002011-01-07
13ZARVONA ENERGY LLC19,0002010-10-15
11ZARVONA ENERGY LLC29,0002010-06-14
12ZARVONA ENERGY LLC19,0002010-06-10
10ZARVONA ENERGY LLC19,0002010-02-11
7ZARVONA ENERGY LLC19,0002008-10-16
4ZARVONA ENERGY LLC19,0002008-07-30
5ZARVONA ENERGY LLC19,0002008-07-30