STILES 4C

Oil · District 10 · Lease #9019

Operator: TAPSTONE ENERGY, LLC

Cum Oil

57k BBL

Cum Gas

541k MCF

casinghead

Wells

1

Production

2014-02 — 2026-04

Peak Month

2014-06

Production History

Cum Oil: 57,488 BBL Cum Gas: 540,948 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,506 BBL/mo

Di (annual)

179.6%

b-factor

0.3

EUR

71,609 BBL

R-squared

0.850

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
1904HFORMENTERA OPERATIONS LLC111,0002013-10-25