HARTGROVE "A"

Oil · District 7C · Lease #6559

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

42k BBL

Cum Gas

131k MCF

casinghead

Wells

3

Production

1993-01 — 2024-03

Peak Month

2016-10

Production History

Cum Oil: 42,381 BBL Cum Gas: 130,867 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

667 BBL/mo

Di (annual)

81.2%

b-factor

0.9

EUR

32,705 BBL

R-squared

0.858

type

hyperbolic

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 (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DAPACHE CORPORATION19,0002016-08-03
3TMAPACHE CORPORATION19,0002006-09-14
142-383-30464TAMARACK PETROLEUM COMPANY INC.------