MAHAFFEY ESTATE -A-

Oil · District 08 · Lease #25491

Operator: RANGE PRODUCTION COMPANY

Fields: DECK (CISCO)

Cum Oil

4k BBL

Cum Gas

12k MCF

casinghead

Wells

1

Production

1993-01 — 2014-03

Peak Month

2011-05

Production History

Cum Oil: 3,658 BBL Cum Gas: 12,473 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

33 BBL/mo

Di (annual)

26.9%

b-factor

0.3

EUR

1,948 BBL

R-squared

0.336

type

hyperbolic

Operator History (from monthly production reports)

2014-08 — 2016-09 EQT PRODUCTION TEXAS, LLC 26 mo
1998-09 — 2014-07 RANGE PRODUCTION COMPANY 191 mo
1994-06 — 1998-08 LOMAK PRODUCTION COMPANY 51 mo
1993-01 — 1994-05 GRAND BANKS ENERGY COMPANY 17 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1EQT PRODUCTION TEXAS LLC18,4001979-05-01