HARTGROVE -E-

Oil · District 7C · Lease #6698

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

188k BBL

Cum Gas

900k MCF

casinghead

Wells

11

Production

1993-01 — 2020-10

Peak Month

1993-05

Production History

Cum Oil: 188,197 BBL Cum Gas: 899,838 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,629 BBL/mo

Di (annual)

19.6%

b-factor

0.0

EUR

99,694 BBL

R-squared

0.677

type

exponential

Operator History (from monthly production reports)

2010-12 — 2026-07 APACHE CORPORATION 188 mo
2007-12 — 2010-11 MARINER ENERGY, INC. 36 mo
1993-01 — 2007-11 TAMARACK PETROLEUM COMPANY, INC. 179 mo

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10TMAPACHE CORPORATION19,0002007-01-29
11TMAPACHE CORPORATION19,0002005-11-29
9TMAPACHE CORPORATION19,0002005-11-29
6APACHE CORPORATION18,1501985-10-08
7APACHE CORPORATION18,1501985-10-08
8APACHE CORPORATION18,1501985-10-08
5APACHE CORPORATION18,1501985-10-02
142-383-30609APACHE CORPORATION------
242-383-30625APACHE CORPORATION------
342-383-30637APACHE CORPORATION------
442-383-30636APACHE CORPORATION------