BLACKNALL, J. C.

Oil · District 04 · Lease #12876

Operator: XOG OPERATING LLC

Fields: TURKEY CREEK (4600)

Cum Oil

37k BBL

Cum Gas

1k MCF

casinghead

Wells

1

Production

1999-10 — 2013-02

Peak Month

1999-11

Production History

Cum Oil: 37,213 BBL Cum Gas: 1,249 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,087 BBL/mo

Di (annual)

41.7%

b-factor

0.1

EUR

34,676 BBL

R-squared

0.795

type

hyperbolic

Operator History (from monthly production reports)

2005-07 — 2026-07 XOG OPERATING LLC 253 mo

2002-05 — 2005-06 XERIC OIL & GAS CORPORATION 38 mo

2001-09 — 2002-04 PENN VIRGINIA OIL & GAS CORP. 8 mo

1999-10 — 2001-08 SYNERGY OIL & GAS, INC. (A) 23 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
8	42-355-01268	XOG OPERATING LLC	11	7,015	1999-04-09