gas diesels oil field power production brochure

8/8/2019 Gas Diesels Oil Field Power Production Brochure

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WRTSIL 32GDGAS-DIESELS FOR OIL FIELD POWER PRODUCTION

AND MECHANICAL DRIVE APPLICATIONS


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GAS FROM THE WELL USE IT, S

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The optimized dual-fuel injection system contributes to completecombustion of all fuels over the entire load range.

Wrtsil gas-diesel technology is the solution or the powergenerating needs o the oil and gas industry. Thanks to theunique pilot uel injection method or initiating combustion,associated gas can be used or power generation at the oilfeld. And i the supply o gas varies in quantity and quality,the answer is uel sharing the Wrtsil innovation thatrevolutionizes the concept o uel exibility. What was onceconsidered an expense, is now an asset.

Gas-diesel (GD) technology was introduced in 1987 with theWrtsil 32GD, the frst gas engine in the Wrtsil port olio. Thistechnology was mainly used in o shore applications, although italso ound applications in the power plant sector. GD technologymakes it possible to run a power plant on either associatedgas or crude oil, giving the operator uel versatility and securityagainst gas supply disturbances. The system accommodates

variations in gas quality.Gas-diesels use the diesel combustion cycle in both gas andliquid uel operation, which gives them the characteristics o adiesel engine with uncompromised output and derating. In thegas mode, a small amount o pilot uel oil injection is used toinitiate combustion.

DONT FLARE IT.

Gas fuel

Liquid fuel

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Fuel sharing window

WHEN THE GAS SUPPLY VARIES, GO FOR FUELFuel sharing enables the use o GDtechnology even when the gas supply is notconstant or the quality o the gas varies.Fuel sharing optimizes power production atthe oil feld in all situations.

The uel sharing system allows the engineto run on gas and liquid uel in di erentproportions, in order to optimize plant operationaccording to the availability o the uels. Forexample, i with the gas available only 30% othe rated output can be achieved, the enginewill use uel oil or the remaining 70%. Theoperator can reely change the setpoint o the

uel share, and the control system will ensure

that the actual operating point is within thespecifed operating windows. O course, theoperator has the choice o running the enginein conventional GD or uel oil operation modeas well.

FUEL OIL OPERATIONFuel oil operation is based on the use onormal uel oil injection pumps and the systemoperates just like any diesel engine. The engine

can run on crude oil, light uel oil or heavy ueloil as the main and pilot injection uel, withoutany changes to the uel injection system. Fueloil operation is available within the ull loadrange rom zero to the rated load o the engine.

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Gasshare %

Dieselshare %

GD operation

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0 10 20 30 40 50 60 70 80 90 100

Fuel Sharing50

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100 Fuel oil operation

Engine load%

Transfer window

Fuel Sharing

GD OPERATIONGD is the original gas-diesel operation mode,where gas is the main source o energy,pilot uel oil injection o approximately 5% isused to ignite the combustion. GD operationis available at any point between 30%and 100% o rated load and the plant cantrans er to and rom GD operation within thissame range.

FUEL SHARING OPERATIONThe uel sharing option is available between35% and 87.5% o rated load. The uel sharesetpoint can be adjusted on-line rom WOIS(Wrtsil Operators Inter ace System). Theoperator may, or example, want to run with35% gas at ull engine load, so he gives a35% setpoint and selects uel sharing mode.

I at any time the engine load is too low

to achieve the selected setpoint, the controlsystem will automatically adjust the setpointto the minimum or maximum limit. Theoperator may also change the setpoint at anytime during operation.

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Fuel sharing technology

FUEL SHARING CONTROL SYSTEMThe uel sharing system is essentially acombination o the GD engine and a new

control system and control principle. Thesystem controls both gas and oil injectionsimultaneously and allows both to be usedwithin the allowed operating window limits.The new control system is integrated intothe programmable logic control (PLC) o theWrtsil extended level automation systemusing the WOIS plat orm.

Since the control system is now integratedinto the Wrtsil standard extendedlevel automation system, gas conversion

applications or uture gas conversions are nowmuch more attractive than with the original GDsystem.

The main advantages o the uel sharingsystem are:

Flexible operation with variable proportionso gas and oil

Flexibility in uel oils, or example LFO, HFOand crude oil can be used as main and pilot

uel The system can operate on low methane

number gas The system can use both low and high heat

value gas

CONVERSION OF EXISTING ENGINES

I conditions at the feld change and it becomesmore economical to use gas as the main uel

or feld energy production, Wrtsil Vasa32LN engines can be converted to gas-dieseloperation.

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Wrtsil supplies complete power generatingsolutions, based on compact modularcomponents. Engines, alternators, controlsystems. Even housing structures can beincluded. Complete with engine auxiliaryequipment, fre fghting systems, maintenanceprovisions, monitoring, ventilation etc.

All this rom one supplier who takes completeresponsibility or your installation throughout

its li etime! With more than 1000 MW dual- uelpower installed throughout the world, Wrtsilis the partner you can rely on.

PETROPRODUCTION SEQOYA In 2002 Wrtsil was contacted by Dygoil, an

Ecuador-based company, with a specifcationthat called or true uel sharing capabilityor an oil feld power supply system. Dygoil

needed a power plant that could run on bothassociated gas and crude oil because the gassupply was not stable and gas availability wasdeclining over time as the watercut increased.Wrtsil took up the challenge and developedthe uel sharing system or the 2 x Wrtsil16V32GD project. The plant was handed over

or commercial operation in March 2004.

VESSLEFRIKK Norwegian Statoil decided to convert two othe plat orms eight installed Wrtsil Vasa12V32 diesel gensets rom Marine DieselOil (MDO) to associated gas. The engineswere initially designed or easy conversion.In close cooperation with Statoil, the Wrtsilteam carried out the conversion as well as atotal upgrade to the latest technology. And a

complete rebuilding o two other engines thathad been in operation or ten years. The entireproject was carried out in just three monthson board Vesle rikk plat orm in the North Sea,without disturbing oil production.

THE PROOF IS OUT THERE.

KHULNA (TIGER 1 AND TIGER 3)Location: BangladeshEngines: 19 x Wrtsil 18V32LN (GD)Output 110 MWDelivered: 1997

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WRTSIL 32GD MAIN TECHNICAL DA

Power productionCylinder bore 320 mmPiston stroke 400 mmRated speed 750/720 rpmBMEP 2.09/2.10 MPaCylinder output 420/405 kW

Technical data 50 Hz/750 rpm Unit 16V32GD 20V32GDPower, electrical kW 6505 8148

Heat rate kJ/kWh 8200 (7843)* 8181 (7813)*

Electrical e fciency % 43.9 (45.9)* 44.0 (46.0)*

Technical data 60 Hz/720rpmPower, electrical kW 6273 7857

Heat rate kJ/kWh 8200 (7843)* 8181 (7813)*Electrical e fciency % 43.9 (45.9)* 44.0 (46.0)*

Dimensions and dry weight with generating setLength mm 11303 12890

Width mm 3300 3300

Height mm 4472 4243

Weight tonne 120 132

Heat rate and electrical e fciency at generator terminals, including engine-driven pumps, ISO 3046 conditions andLHV > 36 MJ/m3. Tolerance 5%. Power actor 0.8. Gas pressure at engine inlet 350 bar.*in liquid mode.

Mechanical driveCylinder bore 320 mmPiston stroke 400 mmSpeed range 600 -750 rpmBMEP 2.09 MPaCylinder output 420 kW

Technical data 750 rpm 6L32GD 8L32GD 9L32GDSha t power kW 2520 3360 3780

Sha t power hp 3378 4504 5067

Heat rate kJ/kWh 7912 (7580)* 7912 (7580)* 7912 (7580)*

Sha t e fciency % 45.5 (47.5)* 45.5 (47.5)* 45.5 (47.5)*

Dimensions and dry weight

Length mm 5297 6245 7116Width mm 2300 2300 2300

Height mm 3421 3450 3571

Weight tonne 30 42 44

Technical data 750 rpm 12V32GD 16V32GD 18V32GD 20V32GDSha t power kW 5040 6720 7560 8400

Sha t power hp 6757 9009 10135 11261

Heat rate kJ/kWh 7912 (7580)* 7912 (7580)* 7912 (7580)* 7912 (7580)*

Sha t e fciency % 45.5 (47.5)* 45.5 (47.5)* 45.5 (47.5)* 45.5 (47.5)*

Dimensions and dry weightLength mm 6837 8206 8766 9276

Width mm 2870 3296 3296 3233Height mm 3595 3595 3595 4139

Weight tonne 54 63 70 89

Technical data is based on mechanical output at sha t, including engine-driven pumps, ISO conditions and LHV >36 HJ/m3. Tolerance 5%. Gas pressure at engine inlet 350 bar. * In liquid mode.

SANAA Location: YemenEngines: 3 x Wrtsil 18V32GDOutput: 15.5 MWDelivered: 2006

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WRTSIL is a registered trademark. Copyright 2009 Wrtsil Corporation.

Wrtsil enhances the business of its customers by providing themwith complete lifecycle power solutions. When creating better andenvironmentally compatible technologies, Wrtsil focuses on themarine and energy markets with products and solutions as well asservices. Through innovative products and services, Wrtsil sets outto be the most valued business partner of all its customers. This isachieved by the dedication of close to 19,000 professionals manning160 locations in 70 countries around the world. Wrtsil is listed onthe Nordic Exchange in Helsinki, Finland.

gas diesels oil field power production brochure

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