Niobrara and Greenhorn Formations A Geologic and Petrophysical Database g p y

of the DJ and Raton Basins of Colorado, Wyoming and Nebraska

This three‐part study covers the DJ basin Niobrara and Greenhornp ytight oil plays from SE Wyoming to the New Mexicoborder. The objective of the project is to provide a regionalframework with the data needed to quickly extend your mappingacross the entire play fairway; to provide completed regionalmaps and sections for screening lease acquisition and drillingopportunities; and to build an immediately workable dataset toopportunities; and to build an immediately workable dataset togive new entrants a head start on their geologic evaluations.

Phase I – Complete, can be delivered nowCovers the northern DJ basin play fairway from the city of Denvernorth into Wyoming.

Ph II C l t i fid ti l h ldi til D b 2011Phase II – Complete, in confidential holding until December 2011Covers the southern Colorado portion of the DJ basin and theRaton basin.

Phase III – In progress, anticipated completion in 2012A detailed vitrinite reflectance and thermal maturation evaluationof the entire play incorporating new sampling of >200of the entire play incorporating new sampling of >200representative wells.

If you are a new player to the Niobrara, an established playerlooking to extend your work geographically or stratigraphically,or a deal maker needing to very quickly evaluate opportunities,there is something in here for you.there is something in here for you.

Niobrara and Greenhorn Formations A Geologic and Petrophysical DatabaseA Geologic and Petrophysical Database 

for the DJ and Raton Basins

• Digital database in Petra or ASCII format • Basic well header data, non‐proprietary X‐Y locations Di it l l d b• Digital land base 

• Vitrinite‐base maturity study• Formation tops include 

Niobrara Formation and five internal markers Fort Hays Limestone Carlile Shale h Greenhorn Formation Graneros Formation X‐bentonite Marker D‐sand J‐sand   

• Digitized log curves in almost 700 Niobrara wells, most with density and neutron curves Digitized log curves in almost 700 Niobrara wells, most with density and neutron curves At least 449 wells in Phase I and 223 wells in Phase II

• Zone averages of key petrophysical properties

• Over 50 maps and associated regional cross sections in PDF format, including:  Thickness of Niobrara, Greenhorn and each sub‐interval  Structure and drilling depth to base of Niobrara Structure and drilling depth to base of Niobrara  Average density and neutron porosity, resistivity and water saturation by unit  Mean TOC computed from bulk density for Niobrara and Greenhorn 

• A digital project, delivered on DVD 

Phase 1 ‐ completed, available for deliveryPhase 2 – December 2011Phase 2  December 2011Phase 3 ‐ 2012$30,000 per project phase

For Information Contact Bob Cluff at 303‐831‐1515 The Discovery Group, Inc.1560 Broadway, Ste. 1470Denver, CO  80202bobcluff@discovery‐group.com

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Banner County

Laramie County

Kimball County

1000900800700600500400300200

Phase 1 & 2:Includes over 50 maps per area

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GreeleyLoveland

Loveland

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Longmont

BoulderBoulderlder

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Boulder

Morgan County

Utilizing data from almost 700 digitized well logs

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Denver

Denver

WashinBroomfield County

Adams County

County

Denver County

Arapahoe County

400

FEET

0 77,288

PETRA 6/21/2011 3:07:44 PM

F t i diff t i t l

<9.51MI> <8.86MI> <11.94MI> <20.01MI> <31.50MI> <18.71MI><9.51MI> <8.86MI> <11.94MI> <20.01MI> <31.50MI> <18.71MI>

From up to six different intervalsAnd several tops in and around the Niobrara

h d l dPhase 3: a detailed vitrinite reflectance and thermal maturity study from >200 wells 

Albany County

Morrill County

Scotts Bluff County

Banner County

Laramie County

CheyenneCheyenne CountKimball County

Weld County

Logan CountyLarimer County

NebraskaWyoming

Phase 1For Information 

Contact B b Cl ff t 303 831 1515Fort Collins

GreeleyLoveland

Longmont

Boulder

Morgan County

Washington County

Boulder County

Broomfield County

Bob Cluff at 303‐831‐1515 The Discovery Group, Inc.1560 Broadway, Ste. 1470Denver, CO  80202bobcluff@discovery‐group.com

Denver

Denver

y

Adams CountyGilpin County

Jefferson County

Denver County

Clear Creek County

Arapahoe County

K

Douglas County

Ph 2Colorado Springs

KElbert County

Lincoln County

County

Teller County

El Paso County

C

Colorado

Phase 2

Pueblo

Fremont County

Kiowa Co

Pueblo County

Crowley County

Custer County

Bent CountyOtero County

Colorado

Huerfano County

Las Animas County

unty

Costilla County

Colorado, Wyoming and NebraskaDJ and Raton Basins,

showing study well controlNiobrara Oil Fairway Study Outline

C lf C t

Wells with tops, blueDigitized wells shown as pink,

New Mexico

Tops picked

Digitized log

PETRA 7/29/2011 10:54:19 AM