STILES 4D

Oil · District 10 · Lease #9026

Operator: TAPSTONE ENERGY, LLC

Cum Oil

83k BBL

Cum Gas

822k MCF

casinghead

Wells

1

Production

2014-02 — 2026-04

Peak Month

2014-06

Production History

Cum Oil: 83,054 BBL Cum Gas: 821,667 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,107 BBL/mo

Di (annual)

140.8%

b-factor

0.4

EUR

72,141 BBL

R-squared

0.798

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
2014-02 — 2014-12 APACHE CORPORATION 11 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2004HFORMENTERA OPERATIONS LLC211,0002013-10-28