STILES 4

Oil · District 10 · Lease #8797

Operator: TAPSTONE ENERGY, LLC

Cum Oil

179k BBL

Cum Gas

742k MCF

casinghead

Wells

1

Production

2013-02 — 2026-04

Peak Month

2013-03

Production History

Cum Oil: 178,965 BBL Cum Gas: 742,432 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

12,790 BBL/mo

Di (annual)

280.1%

b-factor

0.5

EUR

108,310 BBL

R-squared

0.681

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
2013-02 — 2014-12 APACHE CORPORATION 23 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1704HFORMENTERA OPERATIONS LLC211,0002012-11-27