CYNTHIA

Oil · District 7C · Lease #6221

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

52k BBL

Cum Gas

798k MCF

casinghead

Wells

3

Production

1993-01 — 2020-07

Peak Month

2009-03

Production History

Cum Oil: 52,474 BBL Cum Gas: 798,206 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

658 BBL/mo

Di (annual)

20.3%

b-factor

0.1

EUR

43,034 BBL

R-squared

0.783

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 (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4TMPIONEER NATURAL RES. USA INC.112,0002007-12-20
4502PIONEER NATURAL RES. USA INC.18,5002003-02-04
142-383-30312PIONEER NATURAL RES. USA INC.------