MALONE -45-

Oil · District 7C · Lease #6191

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

147k BBL

Cum Gas

1.6M MCF

casinghead

Wells

7

Production

1993-01 — 2026-04

Peak Month

2013-10

Production History

Cum Oil: 146,641 BBL Cum Gas: 1,583,401 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,881 BBL/mo

Di (annual)

91.0%

b-factor

0.9

EUR

84,288 BBL

R-squared

0.848

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2017-03 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 47 mo
2010-12 — 2017-02 APACHE CORPORATION 75 mo
2007-12 — 2010-11 MARINER ENERGY, INC. 36 mo
1993-01 — 2007-11 TAMARACK PETROLEUM COMPANY, INC. 179 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3PIONEER NATURAL RES. USA, INC.18,1502013-02-21
8PIONEER NATURAL RES. USA, INC.18,0002013-01-25
4TMPIONEER NATURAL RES. USA, INC.19,0002007-08-28
5TMPIONEER NATURAL RES. USA, INC.19,0002006-08-28
6TMPIONEER NATURAL RES. USA, INC.19,0002006-03-30
142-383-30290PIONEER NATURAL RES. USA, INC.------
242-383-30320PIONEER NATURAL RES. USA, INC.------