RATLIFF -K-

Oil · District 08 · Lease #13238

Operator: UNION PACIFIC RESOURCES COMPANY

Fields: HEADLEE, N. (DEVONIAN)

Cum Oil

57k BBL

Cum Gas

330k MCF

casinghead

Wells

1

Production

1993-01 — 2012-05

Peak Month

1996-09

Production History

Cum Oil: 56,932 BBL Cum Gas: 329,953 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

887 BBL/mo

Di (annual)

21.7%

b-factor

0.0

EUR

49,054 BBL

R-squared

0.401

type

exponential

Operator History (from monthly production reports)

2010-09 — 2012-11 PDC ENERGY 27 mo

2010-08 — 2010-08 PDC-WV-CO CORPORATION 1 mo

2004-12 — 2010-07 MERIT ENERGY COMPANY 68 mo

2002-12 — 2004-11 ANADARKO E&P COMPANY LP 24 mo

2001-02 — 2002-11 RME PETROLEUM COMPANY 22 mo

1998-03 — 2001-01 UNION PACIFIC RESOURCES COMPANY 35 mo

1996-05 — 1998-02 EUREKA PROSPECTING COMPANY 22 mo

1994-08 — 1996-04 PENROC OIL CORP. 21 mo

1993-01 — 1994-07 PHILLIPS PETROLEUM COMPANY 19 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-135-04994	PDC ENERGY	2	13,786	1996-06-06