BARTZ 19A

Oil · District 10 · Lease #9037

Operator: TAPSTONE ENERGY, LLC

Cum Oil

195k BBL

Cum Gas

1.2M MCF

casinghead

Wells

1

Production

2013-08 — 2026-04

Peak Month

2013-08

Production History

Cum Oil: 194,918 BBL Cum Gas: 1,164,816 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

20,850 BBL/mo

Di (annual)

207.9%

b-factor

0.3

EUR

172,091 BBL

R-squared

0.908

type

hyperbolic

Operator History (from monthly production reports)

2021-06 — 2026-07 FORMENTERA OPERATIONS LLC 62 mo
2015-01 — 2021-05 TAPSTONE ENERGY, LLC 77 mo
2013-08 — 2014-12 APACHE CORPORATION 17 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2119HFORMENTERA OPERATIONS LLC111,0002013-05-30