MALONE -9-

Oil · District 7C · Lease #6288

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

80k BBL

Cum Gas

753k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

2009-04

Production History

Cum Oil: 80,206 BBL Cum Gas: 753,320 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

999 BBL/mo

Di (annual)

55.2%

b-factor

0.5

EUR

40,472 BBL

R-squared

0.907

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 (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3TMPIONEER NATURAL RES. USA, INC.110,0002008-03-11
4TMPIONEER NATURAL RES. USA, INC.19,0002007-01-04
2TMPIONEER NATURAL RES. USA, INC.19,0002006-03-15
1X42-383-30345PIONEER NATURAL RES. USA, INC.------