“Harnessing Available Fuel in the Most Efficient Way for Greener Powering

Solution”

11th Annual FPSO Congress

By

Stig Bøtker

Sales Director Offshore

Ship Power

Agenda

� Wärtsilä in brief

� Setting the scene

� Duel fuel technology and its advantages

� Power plant solutions for FPSOs

� References & operational experience

� Summary

This is Wärtsilä

SHIPPOWER

POWERPLANTS

SERVICES

18 000 employees in 110 Countries

Net sales 2009 5.3 billion EuroOperating results 11.2 %

Merchant OffshoreCruise

and FerryNavy

Special

Vessels

This is Wärtsilä – Ship Power

Every third ship is powered by Wärtsilä

Specials

Power

DistributionPower

DrivesAutomation

Propulsion

Engines

This is Wärtsilä – Solution Provider

Ship Design

Setting the Scene – Power Plant Fundamentals

� Fuel flexibility

� Energy Efficiency

� Operational flexibility

� Low environmental impact

� Tried and tested concept

� Competitive cost

� Capex and Opex

Setting the Scene – Fuel Availability

� Fuel type and availability will depend on the reservoir characteristics and may vary with the extent of the reservoir depletion

� Type of fuel available from the reservoir may vary from gas,

light crude oil to heavy crude oil

� Alternative to reservoir fuel, the fuel may be transported from

shore. This is in general an expensive solution and will due to

the transportation increase the carbon footprint.

Duel Fuel/Multiple fuel power generation facility with low emission and high efficiency would solve many of the

fundamentals for an offshore power plant

Duel Fuel/Gas Engine Technologies

Gas-diesel (GD) engines:

• Runs on various gas / diesel mixtures or alternatively on diesel.

• Combustion of gas, diesel and air mixture in Diesel cycle.

• High-pressure gas injection.

Dual-fuel (DF) engines:

• Runs on gas with 1% diesel (gas mode) or alternatively on diesel (diesel mode).

• Combustion of gas and air mixture in Otto cycle, triggered by pilot diesel injection (gas mode), or alternatively combustion of diesel and air mixture in Diesel cycle (diesel mode).

• Low-pressure gas admission.

Spark-ignition gas (SG) engines:

• Runs only on gas.

• Combustion of gas and air mixture in Otto cycle, triggered by spark plug ignition.

• Low-pressure gas admission.

‘87 … ‘92 ‘93 ‘94 ‘95 ‘96 ‘97 ‘98 ‘99 ‘00 ‘01 ‘02 ‘03 ‘04 ‘05 ‘06 ‘07 ‘08 ‘09 ‘10 ‘11 ‘12

Dual-fuel (DF) engines – Multiple fuel engines

Spark-ignition gas (SG) engines

Gas-diesel (GD) engines

Operating Modes for DF Technology

� Gas mode

� Natural gas + MDO pilot

� Automatic and instant trip to diesel operation in alarm/emergency situation

� Transfer to diesel operation at any load on request

� Diesel mode

� MDO/HFO/crude + MDO pilot

� Operated as an ordinary diesel engine

� Transfer to gas operation at any load below 80%

� Pilot fuel injection in operation also during diesel mode operation

� Transfer between modes without power interruption

Gas mode Diesel mode

10%

80%

100%

Engine

Load

Typical plant efficiency at full output

Coal Fired Steam Plant

Small Size Gas Turbine

Big Size Gas Turbine

Big Size DF Engine

42%

30%

37 %

48%

Typical shaft efficiencies - simple cycle prime movers –No de-rating due to ambient temperature

Duel fuel Engines Efficiency

� The available power for a

duel fuel reciprocating

engine is constant for an

ambient temperature of less

than approximately 45

degrees

� The available power for a

gas turbo generator is

highly depended on the

ambient temperature

Duel Fuel Engines Efficiency

� The efficiency of the DF engine depend less on the power level compared to a gas turbine generator

� The DF engine are especially more efficient then the gas turbines for lower load levels

Temperature [ºC] Output (% of the MCR output in 15ºC, i.e. ISO conditions)

SFOC[g/kWhe]

SFOC[g/kWeh]

Max. power limit

Wärtsilä DF genset

Gas turbine genset

CO2 emissions

Coal Fired Steam Plant Fuel: Coal

Small Size Gas Turbine Fuel:Gas

Big Size Gas Engine Fuel:Gas

800

670

430

Typical CO2 emissions in g/kWh (shaft) - simple cycle prime movers –No de-rating due to ambient temperature

545

Big Size Gas Turbine Fuel:Gas

Dual Fuel Reciprocating Engine Characteristics

� High Efficiency over the full range of ambient temperatures and load levels

� Low emissions due to the high efficiency, clean fuel and a lean burn combustion

� Full fuel flexibility “you pump it – we burn it

With all the advantages why has the solution not been able to penetrate the market ?

34DF

50DF

20DF

0 5 10 15

20V34DF

12V34DF

9L34DF

6L34DF

16V34DF

18V50DF 17.55 MW

16V50DF

12V50DF

9L50DF

8L50DF

6L50DF

9L20DF

8L20DF

6L20DF 1.0 MW

Dual-Fuel Engine Portfolio

Power Plant Solutions for Offshore Oil & Gas

� Module solutions

� Module solutions will typically comprises of 2 to 4 engines

� Container solutions

� The container will typically comprises of 1 to 3 engines

� Hull solutions

� The engines will be installed directly in the hull of the

vessel

Module & Container Solutions

Full equipped stand alone container with one engine

Full equipped stand alone module with four engines

Offshore Power Plant for Brazil

� Field characterized by limited availability of gas and high power requirement due to the use of multiphase pumps

� 6 x18V50DF in 3 modules, total power 102 MW

� Running on tri-fuel: treated crude, MDO and treated well gas

� Delivery July 2011

Installation in Hull

� Power plant can be housed below decks – frees up

topside space

� Conventional “engine room design”

� No need for large suction air ducts or discharge

� Low radiated heat in engine room

� Noise level according to IMO

Power Plant For Offshore Oil and Gas applications

� Dual fuel reciprocating power plants solutions are available for offshore oil & Gas applications

� Considering the advance in electrical motors and VSD a central power plant is able to power an entire offshore production units including compression and pumping requirement

� Reciprocating power plants are especial competitive for power requirement up to 70 MW

� Reciprocating power plants are also competitive for large power requirement if gas only is available for a limited time of the fields life time

Dual-Fuel Engines - References

Dual Fuel sold or running

Power plant 28 installations84 engines>640’000 running hours

LNG carriers62 installations230 engines> 1’500’000 running hours

OSV - FPSO8 installations22 engines>300’000 running hours

Operational Experience with Duel Fuel Engines

� The Wärtsilä DF engines have now been in commercial operation on LNG carriers for > 5 years. Experience from > 1’500’000 engine running hours have been collected

� The DF engines has met or exceeded the requirements in terms of:Reliability, Functionality and Engine performance

� Efficiency > 48% in gas mode

� Fuel back up operation instantly

� Low emissions

� Meet predicted overhaul intervals

� Because of the excellent operational experience Wartsila is willing to sign long term service & operational contracts

� The client will have a low and predictable OPEX for the engines

Operational Experience with Duel Fuel Engines

� Extensive inspection was performed after 18000 running hours to verify the condition of the engines

� Very low wear rates

� Honing marks visible in cylinder liner after 18.000 hours of operation

� No piston ring wear (not measurable)

� Small amount of deposits

� Light tendency of discolor on liner surface

Summary

� A power Plant solution for offshore oil & gas production based on dual fuel reciprocating engines offer :

� Fuel flexibility Yes

� Energy Efficiency Yes

� Operational flexibility Yes

� Low environmental impact Yes

� Tried and tested concept Yes

� Competitive cost Test it next time and you will

be positively surprised

Thank you for your attention