HARRIS "B"

Oil · District 7B · Lease #28666

Operator: WHITE ROCK OPERATING, INC.

Fields: JANE'S (CROSS PLAINS SD.)

Cum Oil

18k BBL

Cum Gas

0 MCF

Wells

2

Production

1999-09 — 2019-01

Peak Month

1999-10

Production History

Cum Oil: 17,798 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

437 BBL/mo

Di (annual)

42.5%

b-factor

0.3

EUR

17,415 BBL

R-squared

0.825

type

hyperbolic

Operator History (from monthly production reports)

2017-11 — 2026-07 CWO ENERGY, LLC 105 mo

2016-10 — 2017-10 WHITE ROCK OPERATING, INC. 13 mo

2015-08 — 2016-09 M & K OPERATING LLC 14 mo

2012-07 — 2015-07 INCEPTUS OPERATIONS, LLC 37 mo

2012-04 — 2012-06 SEDCO OPERATING, LLC 3 mo

2008-07 — 2012-03 DISCOVERY PETROLEUM, L.L.C. 45 mo

1999-09 — 2008-06 HOFCO, INC. 106 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
3B	42-059-36539	CWO ENERGY LLC	1	1,999	2000-09-12
1	42-059-36495	CWO ENERGY LLC	1	1,999	1999-06-15