solberg - heavy oil
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Extra Heavy Oil in CanadaSeparasjonsteknologi 2007, 26.09.2007By Martin V. Solberg, Statoil ASA
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Why Heavy- and Extra Heavy Oil?
Sources of new project liquids for majors (Source: Gordon Energy Solutions)
Statoil EHO Experience:
Sincor, Venezuela In production, 200 000bbl/d
Statoil North American Oil Sands Corporation (NAOSC), Canada First production is planned for late 2009/early 2010 from the Leismer demonstration
project (10 000 bbl/d). The portfolio is expected to yield more than 200,000 barrels per
day at the end of next decade.
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What is Heavy Oil?
Model of Asphaltene in Venezuelan Crude; Viscosity & densities(Image Source: www.uic.edu/Unknown)
High density and viscosity Heavy Oil: Density from 20 to 10 API with
reservoir viscosity in the range of about 50 to 2000 cp.
Extra Heavy Oil: Density less than 10 API withreservoir viscosity higher than 1000 cp.
Low hydrogen to carbon ratios
High boiling point and a high molecular weight (e.g. C60+)
Typically high contents of aromatics, asphaltenes, heavy
metals, sulphur, nitrogen, wax, resins, naphtenic acids andnaturally occurring emulsifiers and foaming components
Specialized refining processing is often required
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Heavy Oil
U p s t r e am
Conventional OilsValue Chain & Production Methods
Condensate
Dilbit
Syncrude
Synbit
Syncrude
U p gr a d er
Naphta
Dilbit
M ar k e t
R ef i n er y
Naphta
Gasoline
Diesel
Etc.
Asphalt
Crude
Mi ni n
g
R e s er v oi r
EHOSand
R e s er v oi r
C ol d
EHO / HO
R e s er v oi r
H o t EHO/Bitumen
& Water emulsion
Steam
R e s er v oi r
V a p ex
Solvent
DilutedEHO/Bitumen
R e s er v oi r
I n- s i t u
c om b u s t i on
EHO / HO
Air
U p s t r e am
R e s er v oi r
Crude
Pressure Support
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Mining Typically reservoir depth
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Steam Assisted Gravity Drainage (SAGD)
SAGD is typically suitable for :
Reservoir depth >100 m
Solid or liquid bitumen at reservoir T&P
Reservoir pressure < critical pressure for water/steam
(Image Source: http://www.statoil.com/)
Reservoir is heatedwith steam to makethe oil mobile
Bitumen/wateremulsion is pumped
up to the surface at
Production Pads
Separation ofbitumen, water, gasand sand at a Central
Processing Facility
Water is recycled forsteam generation
Bitumen is diluted orupgraded
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SAGD Facilities
Production Pads Gathering networks
Central Processing Facility (CPF) Water Treatment Steam generation Separation
SAGD Facilities; SAGD CPF and PAD, Alberta, Canada (Image Source: Internet)
Simplified SAGD process scheme (Image Source: Statoil/MEG Worley Parson)
CPF
Pads
Wellpairs
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Challeng es Vulnerable En vironment Wetlands , Wildlife, Ac cess Roads &
Pipelines,
Aboriginals/Fir st Nations Water
Make-up water & Disposal without interference ofground water
Process Wastes Project Execution Challenges
Location, Transportation, Skilled Personnel Emissions to Air
Global Emissions: CO2 Local Emissions: NOx, SOx, etc.
(Image Source: David Dodge, The Pembina Institute)
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Opportunities Improved well-control & reservoir knowledge = reduced SOR
CO2 capturing & deposit
Technology advancements: Water Treatment, Steam Generation & Zero Liquid Discharge
Alternative production methods
Cogeneration Value chain optimisations and synergies
Facility and environment monitoring and continious follow-up
Reclamation of land & planting of trees Future developement of cities and industry in the area
ICO2N is a CO2 capture and disposal organisation (Photo: David Dodge, The Pembina Institute);
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Questions ?
Oil Sand, EHO, Syncrude, Processing Facility, SAGD Facility with Pads(Image Source: Unknown (Internet) / Encana / Google Earth)