ZAVISCH -A-

Oil · District 01 · Lease #14506

Operator: WELHAUSEN OPERATING COMPANY, LP

Cum Oil

251k BBL

Cum Gas

972k MCF

casinghead

Wells

9

Production

2004-01 — 2026-02

Peak Month

2007-08

Production History

Cum Oil: 250,505 BBL Cum Gas: 972,017 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,268 BBL/mo

Di (annual)

14.9%

b-factor

0.0

EUR

182,368 BBL

R-squared

0.329

type

exponential

Operator History (from monthly production reports)

2020-05 — 2026-07 GTG OPERATING, LLC 75 mo
2015-04 — 2020-04 CLEARLY PETROLEUM, LLC 61 mo
2013-06 — 2015-03 WAPITI OPERATING, LLC 22 mo
2012-01 — 2013-05 LAYLINE PETROLEUM I, LLC 17 mo
2004-01 — 2011-12 WELHAUSEN OPERATING COMPANY, LP 96 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
A 14GTG OPERATING LLC111,5002013-09-17
15GTG OPERATING LLC110,8002013-04-22
11GTG OPERATING LLC110,8002013-04-15
12GTG OPERATING LLC110,8002013-01-11
A 10GTG OPERATING LLC111,0002006-03-29
A 6GTG OPERATING LLC110,5002006-01-20
A 8GTG OPERATING LLC110,5002006-01-20
A 9GTG OPERATING LLC110,5002006-01-20
7GTG OPERATING LLC110,5002003-12-09