DUVAL COUNTY RANCH CO. -K-

Oil · District 04 · Lease #12347

Operator: TEXAS PETROLEUM INVESTMENT CO.

Cum Oil

14k BBL

Cum Gas

49k MCF

casinghead

Wells

2

Production

1994-06 — 1998-06

Peak Month

1994-07

Production History

Cum Oil: 13,946 BBL Cum Gas: 49,188 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,167 BBL/mo

Di (annual)

186.9%

b-factor

0.4

EUR

12,326 BBL

R-squared

0.606

type

hyperbolic

Operator History (from monthly production reports)

2010-07 — 2026-07 TEXAS PETROLEUM INVESTMENT CO. 193 mo
2009-12 — 2010-06 ENERGYQUEST II, LLC 7 mo
2007-01 — 2009-11 SEQUOIA MANAGEMENT, LLC 35 mo
1996-09 — 2006-12 SOUTHWESTERN ENERGY PROD. CO. 124 mo
1994-06 — 1996-08 EXXON CORP. 27 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
65 DSOUTHWESTERN ENERGY PROD. CO.45,8002007-07-27
66TEXAS PETROLEUM INVESTMENT CO.45,7002007-04-18