1. Venture
into the world of industrial turbomachinery and oil and gas solutions
Issue 15 | May 2011
Focus
Drillships: Going deep with
trust and passion
Spotlight
Forging ahead with subsea
technology
Monitor
SGT-750 — What customers
asked for in a gas turbine

2. Dear Readers,
Welcome to a new Venture magazine. This issue will be distributed at the Offshore
Technology Conference in Houston, Texas, during the first week of May and therefore
reflects our offshore technologies business. From subsea to drillships and back
again, we visit a shipyard in Korea that has close cooperation with our oil & gas hub
in Singapore, meet the man who designed the cooling system for the STC-ECO
subsea compressor, and present some recent strategic business tie-ups, including the
acquisition of two Norwegian subsea specialist companies who will enrich our
portfolio and extend our competence. Our recently launched SGT-750 industrial gas
turbine also makes a guest appearance: already in the design phase this turbine
was marinized for the tough roll and pitch of offshore applications.
Enjoy reading and an open welcome to meet us in Houston!
Tom Blades, President
Siemens Energy Sector, Oil & Gas Division

3. Inside
Inside 06
14
04 News flash Around the world
Projects in Australia and Norway, and a boost of subsea competence
06 Focus Going deep with trust and passion
Delivering essential electric power packages to the worlds leading
manufacturer of drillships
14 Spotlight Forging ahead
Awarded “Siemens Innovator of the Year”, Wolfgang Zacharias
is the brain behind the cooling system of Siemens STC-ECO subsea
18 motor-compressor unit
18 Monitor SGT-750
With the latest SGT-750, Siemens developed the first of a whole new
breed of industrial gas turbines, based on extensive customer research
Cover photo: Drillships and a semi-submersible drilling rig at the Daewoo Shipbuilding and
Marine Engineering (DSME) in Okpo, South Korea
IMPRINT
Publisher: Siemens AG, Energy Sector, Oil & Gas, Wolfgang-Reuter-Platz, 47053 Duisburg, Germany Responsible: Dr. Uwe Schütz Editorial team: Lynne Anderson (Head),
Manfred Wegner Contact: lynne.anderson@siemens.com Contributing editor: Eric Johnson, Thomas Chatterton Design: Formwechsel Designbüro, Berlin
Photography: Jochen Balke, Florian Sander, Edgar Hendrassen Lithography: TiMe GmbH, Mülheim Printing: Köller+Nowak GmbH, Düsseldorf.
© 2011 Siemens AG. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic,
mechanical photocopying, or otherwise, without prior permission in writing from the publisher.
May 2011 Venture 03

4. Vista
A R O u N D T H E W A l l S — Engineering headquarters of Daewoos DSME shipyard at Okpo, South Korea, see article on page 6.
04 Venture May 2011

5. News flash
Around the world
1 Acquisition of subsea specialists Poseidon and into the upstream gas-gathering facilities to compress low-pressure
Bennex strengthens the Siemens Subsea Portfolio coal-seam gas for delivery to the LNG facility, where it will be com-
Subsea processing is the most rapidly growing application in the pressed and cooled into liquefied natural gas (LNG).
oil and gas industry as depletion of onshore reserves and a mounting
demand on the world market are forcing oil and gas companies to Each compression train consists of two compressor skids, one low-
exploit fields in remote places at ever greater water depths. pressure and one high-pressure, each skid carrying two compressors
with variable speed drives. Each train is designed to transport around
The strong strategic match between Siemens, Poseidon and Bennex 84 million standard cubic feet per day of gas. The compressors have
will enable quicker realization of the companies’ development plans to demonstrate a high level of reliability and flexibility to suit the
and the transaction will be very positive for employees, customers LNG facility requirements.
and stakeholders. The subsea hydraulic and electrical subsea distribu-
tion systems, fiber optic, electromagnetic and seismic applications Coal-seam gas is a natural gas which is mainly composed of methane.
supplied by Bennex add a decisive building block to the Siemens subsea It is a by-product of ancient plant matter that has formed over millions
portfolio. The role of the Poseidon engineers will be to marinize the of years by the same natural processes which produce coal.
proven Siemens offshore portfolio for subsea applications, including
subsea control systems, transformers, switchgears, electric motors, 3 Statoil and Siemens team up
automation and compressors along with other complementary Statoil and Siemens have agreed to team up to push forward
elements such as subsea cameras and subsea electric valve actuators. developments in subsea technology, electrical engineering technology,
energy efficiency measures and wind power.
“This acquisition brings new capabilities to Siemens in subsea engi-
neering, equipment marinization and electrical connector penetrator Statoil said co-operation between the companies facilitates the
technology, the primary elements of solution based on in-house development of new technology. Halfdan Knudsen, senior vice
products,” emphasizes Tom Blades, CEO of the Siemens Oil & Gas president for process and refining technology in Statoil, said: “Based
Division. on complementary user needs and technological opportunities
we aim at developing technological solutions that contribute to more
2 Efficient solutions for unconventional gas gather- environmentally friendly, effective production. This is a strategically
ing in Australia important agreement for Statoil.”
Siemens Energy is to deliver up to 10 compressor trains to Australia
Pacific LNG (APLNG) in Queensland, Australia, a joint venture between Siemens is an important Statoil supplier within several areas, and
Origin Energy and ConocoPhillips. The project involves development the two companies already co-operate in the technology development
of coal-seam gas fields in south central Queensland over a 30-year area. An umbrella agreement has therefore now been developed,
period. It includes construction of upstream gas-gathering and process- structuring the framework of the technology partnership within R&D
ing facilities, together with a 450-km main transmission pipeline and technology development and facilitating the start-up of new
from the gas fields to the LNG facility, being built on Curtis Island near cooperation projects.
Gladstone. The Siemens compression solution will be incorporated
May 2011 Venture 05

6. Focus
Going deep
with trust and
passion
In an extremely competitive market for deep-water drillships, manufacturer
DSME is relying on electric power packages from Siemens. The simple secret
of success: Proximity of Siemens Oil & Gas to the South Korean shipyard.
Perhaps we all know that the earth is 40,000-km mistakes,” notes DSME’s Tae-Young Kang,
round at the equator, but the practicality of Senior Engineer and in charge of electrical and
that really sinks in when a global project is on control system design. “This is unavoidable,
deadline. Take the case of Daewoo Shipbuilding but to stay on schedule, we need to respond
and Marine Engineering (DSME), which sources quickly. Siemens Oil & Gas team is higly
its shipyard off the southern tip of Korea with dedicated so when we ask them for help,
components and services from 40 to 50 major they often come back with answers on the
suppliers that are located — literally — all over same day.”
the world.
This, according to Eun-Kerl lee, Procurement
“Sometimes during the engineering, installa- Manager Offshore with DSME, is where
tion and commissioning of a new ship, we Siemens towers above its competitors. “All the
can make mistakes or our supplier can make suppliers must communicate,” he notes,
06 Venture May 2011

7. Focus
DRILLSHIP OWNER END USER
Platinum Explorer TMT & Vantage ONGC India
Dragon Quest TMT & Vantage Petrobras
NORBE VIII Odebrecht Petrobras
NORBE IX Odebrecht Petrobras
Cobalt Explorer TMT To be announced
Carolina Petroserv Petrobras
ODN I Odebrecht/Delba Petrobras
ODN II Odebrecht/Delba Petrobras

8. Focus
The lobby of DSME shipyard, with the corporate motto chiseled in marble.
“but none of them do it as well as Siemens.” and what role Siemens equipment plays in test of performance comes when swells and
Of course the top-notch technical performance them. tides join the action.
of its equipment is highly valued by DSME,
but what sets Siemens apart from the crowd is That’ll be the Daewoo This is where dynamic positioning (DP) comes
accessibility and prompt response. First things first: these ships are behemoths. into play. DP maintain a vessel’s position and
Stretching some 240 m long by 40 m wide and heading by use of propellers and thrusters. An
That is fulsome praise — which so far has been 20 meters below the deck, and wired by some array of sensors — that measure geographic
more than matched by deeds. From 2005 to 700,000 meters of data and power cables, their position, wind and motion — coupled with gyro
2010, the shipbuilder bought Siemens power- operating gear — crowned by an unmistake- compasses, tell a central computer the vessel’s
packages for 13 drillship and semi-submersible able oil derrick poking up from the middle position as well as the outside forces affecting
platform projects (see table for the most recent — reaches another 70 meters into the sky. They that position. using a mathematical model that
ones) at a total value north of euro 300 million. weigh over 100,000 metric tons. includes all these inputs plus the vessel’s drag
and its propeller and thruster abilities, the
For Siemens this is an honour as well as a As is obvious from their name, drillships computer calculates the required steering angle
sizable order. So to commemorate the occasion, are meant to drill the ocean floor for oil and and output for each thruster. This allows oper-
Venture took an onsite look at Daewoo’s gas reservoirs, penetrating up to 10,000 ft ations in the deep sea where mooring or
ship building operations at Geoje Island, to (3,048 m) of seawater followed by up to another anchoring is impossible, or in shallower areas
learn more about what the vessels can do, 30,000 ft (9,146 m) of the earth’s crust. In calm where anchors are forbidden due to pipelines
where they are deployed, how they are built seas this is challenging enough, but the real or other congestion on the sea floor.
08 Venture May 2011

9. Focus
Trust, passion and mutual understanding — essential ingredients of a working relationship. From left to right: Tae-Young Kan, Senior Engineer for
offshore electrical and control systems, DSME; Myeong-Cheol Shin, Senior Manager offshore projects, DSME; Eun-Kerl Lee, Procurement Manager, DSME;
YeongJoon Jeong, Project Site Manager, Siemens; Cheol Chae, Director, Head of Busan branch, Siemens; P.K. Naik, Senior Project Manager, Siemens.
Not only drillers use dynamic positioning. It thrusters and two generators, but the remain- able thirst for oil, that barrier surely will fall,
also sees duty in semi-submersible units as ing thrusters will keep the ship in position.” and the number of drillships is sure to increase.
well as pipe layers and oceanographic research The entire DP system is engineered based on
vessels. In any case, the DP system is mission FMEA (failure modes and effects analysis) It’s about time
critical. In drilling, DP is the failsafe that keeps procedures, and is subjected to more than However, even as demand is climbing, thanks
pipes from cracking or leaking under the stress 100 tests before final commissioning. to fierce competition, drillship prices are
of movement. So it is no wonder that DSME and actually in a modest decline. What currently
Siemens treat it with such care. “DP3, the latest Industry experts estimate that more than lists for uSD 500–600 million sold a few years
and most stringent version of DP specifications, 1,000 DP-able drillships are in action worldwide. ago for nearer to uSD 750 million.
requires the dynamic positioning system to Most of them are run directly or indirectly by
maintain the position of the ship during and the A-listers in the oil industry, companies such DSME’s response is to build them faster than
following any single fault, including loss of as BP, ExxonMobil, Petrobras and Shell. Daewoo anyone else. Currently it takes a project
compartment due to flood or fire,” explains P.K. vessels are on the job in all the major offshore team, numbering some 500‒600 staff, about
Naik, Senior Project Manager with Siemens sites: Brazil, Gulf of Mexico, North Sea, Persian 30 months to deliver a ship: 12 months for
Singapore Oil & Gas Division. Tae-Young Kang Gulf and West Africa. Still to be drillshipped are engineering and design topped by another
adds: “Basically, DP operates in island mode, the final frontiers of the arctic, says DSME’s 18 months of construction and commissioning.
with completely redundant power supply. Even Tae-Young Kang. “We have not yet mastered the “You cannot find this kind of speed elsewhere,”
in the event of maximum failure of the technology for drillships to handle extremely assures Eun-Kerl lee who adds that the com-
11kV switchboard, we’ll lose no more than two cold climates.” Faced with the world’s unquench- pany is not resting on its laurels. “From cutting
May 2011 Venture 09

10. “To ensure faster response, since 2008 our
drillship project management is located in
the same time-zone as DSME. In addition,
were continuously increasing the number
of engineers available at our Busan and
Okpo offices.”
Cheol Chae, Director, Head of Siemens Busan branch

11. Focus
WHAT’S UNDER THE HOOD:
• Alternators (6 x 11kV, ~ 8MVA)
• 11kV Switchgear c/w synch panels
• HV transformers – 18nos.
• Thruster drives – 6nos.
• Drilling drives
• Thruster motors (6 x 4.5/5.5MW)
• UPS system
• NGT
• Local power management system
• Power system studies for complete ship
(including LV)
• FMEA study
• Class certification through ABS/DNV
steel to delivering the ship, we’re already down the ships six massive diesel generators through does come as a surprise, however, is the sheer
to 17 months, and we’re aiming to cut that time 11-kV switchboards to the entire vessel, most number of future projects DSME wants to
even further.” importantly its workhorses: the drill and the realize together with Siemens. On April 6, DSME
ship’s thrusters which through guidance of issued an order for the supply of power
This need for speed is where Siemens enters the dynamic positioning system, keep the drill solutions for three more drillships, plus a letter
the picture. As expected, DSME values Siemens’ where it is meant to be. of intent for another seven drillships and —
excellent qualifications as well as its good-qual- a first for the Siemens Singapore team — a
ity product and solutions. Its unique selling The drillship Venture visited was the Norbe IX. semi-submersible drilling rig. Obviously, the
principle, though, is Siemens’ ability to respond Currently under commissioning, it is the 8th streak doesn’t stop here. So, watch this space!
rapidly to DSME’s needs, which is possible with such project of cooperation between DSME and
a competent and dedicated execution team Siemens since May 2006. Summarizing his past
serving from (relatively) nearby Singapore. It experience with Siemens, lee says: “We believe
is from here, where Siemens has been present Siemens have a very good product — and a
for over a century and now has more than 2,000 good organisation as well. So, we have trust in
employees, that DSME’s demand is satisfied. the product and the people, and we consider
Siemens a very good colleague for the success
Show me the goods of our drillship projects.” So, it wouldn't TEXT Eric Johnson P H O T O S Jochen Balke
For each drillship, Siemens is supplying a power surprise anyone if DSME wanted to continue its F u R T H E R R E l AT E D I N F O R M AT I O N
package (see box) that supplies electricity from successful cooperation with Siemens. What www.siemens.com/venture
May 2011 Venture 11

12. L O c at i O n
Okpo-dong area, Geoje island, South Korea
c O O r D i n at E S
34° 53' 17'' n, 128° 41' 37'' E
Dat E O f v i S i t
March 21 to 24, 2011
W E at h E r c O n D i t i O n S
fair, 7 degrees centigrade max.
PhEnOLOGy
unusually cold for time of year; cherry blossom
probably delayed by a week or two

13. Off Limits
May 2011 Venture 13

14. Spotlight
Wolfgang Zacharias — Awarded “Siemens Innovator of the Year” for his contribution to the STC-ECOs cooling system
14 Venture May 2011

15. Spotlight
Forging ahead
Imagination and fantasy are essential prerequisites when it comes to finding unconventional solutions
for unconventional applications. Add decades of experience and excellence in workmanship, and you’ll
get a fairly precise outline of Wolfgang Zacharias — Siemens Innovator of the Year and developer of the
cooling system of Siemens STC-ECO subsea motor-compressor unit.
The massive steel capsule would be the pride of any blacksmith. Not the reduction of inlet and outlet pipes and the use of a seal-less design.
that Wolfgang Zacharias — a trained blacksmith — is responsible for The latter has the additional advantage that it reduces the probability
the impressive shell: his job was to ensure the successful function of its of leakage.
even more impressive contents. And he did such a good job, that this
engineer, based in Duisburg, was recently chosen as one of the Siemens The revolutionary design of the STC-ECO which makes it suitable for
Innovators of the Year for his work with components for subsea equip- the extreme conditions encountered on the seabed, especially the high
ment. In particular for the design of a cooling system for the compressor pressure, creates its own challenges: conventional cooling designs do
and its motor, which are contained by the steel capsule in question. not work. Motor and compressor are not separate units here, as they are
They are part of the STC-ECO solution, a hermetically sealed integrated in onshore applications. Thus both produce process heat within a rela-
motor and compressor unit for dirty-gas applications. Setting up such tively small, tightly confined area. Cooling fins that would transport the
equipment onshore is easy business and has been done many times. But heat away from its source are not practical in this case, partly due to
setting it up at the bottom of the sea is pioneers’ work. the very compact design of the device. And as if this was not enough of
a problem, Zacharias had to deal with an additional complication: in
Huge oil and gas finds off the coasts of Brazil and elsewhere in the world, order to fit the motor into the same capsule as the compressor it must
including the frosty north, call for equipment to be placed nearer to the be able to withstand the raised pressure inside. Also, the particularly
pockets of oil and gas — thus at the bottom of the sea, the potential sensitive copper wiring of the motor must not come into contact with the
location for a flourishing subsea oil and gas industry. gas since this could cause corrosion or physical damage through sand
particles, which are sometimes found in raw gas.
“Conditions are rough down there, and maintenance is prohibitively
costly in the extreme environment encountered at 3000 meters “It was obvious that we would have to work with a separate cooling cycle
below sea level,” says Zacharias. The major challenge is thus to raise under these circumstances. Compressor and motor simply produce too
reliability of the equipment even further to allow for maintenance much waste heat. Even the cool waters at the bottom of the sea cannot
cycles of five years without intervention. One way of achieving this is reduce the temperature sufficiently,” says Zacharias.
May 2011 Venture 15

16. to be higher than the pressure of the cooling liquid, therefore the shield
could break easily. To make matters worse: the pressure of the gas
changes constantly, due to natural conditions at the gas deposit or shift-
ing patterns of production. “To avoid damage of the shield we have to
make sure that the pressure on both sides is about equal at any given
time,” explains Zacharias.
The inventor and the machine he co-fathered. To achieve this, he and his team developed a sophisticated control system,
which constantly adapts the pressure of the cooling liquid to match the
pressure of the raw gas flowing through the compressor. “This control
system must work perfectly. The reason is simple: Once the device has
been brought to the bottom of the sea it will have to work without flaws
and without maintenance for years,” Zacharias adds.
Currently a long-term test with a pilot system is being carried out, one
aspect of this testing being to expose the system and its components to
“Maybe a third of my inven- extreme stress levels, to identify their respective breaking points. This
tions seemingly come out is an important part of the creative process of making a product out
of an invention. According to Zacharias there is more than one way to
of the blue. An idea, a quick spark ideas which lead to inventions. “Maybe a third of my inventions
draft and it turns out that seemingly come out of the blue. An idea, a quick draft and it turns out
that it really works,” he says. But most inventions are the result of the
it really works.” continuing struggle of an engineer to make an incremental improvement
to an existing machine. If you’re lucky, the increment turns out to be
a leap rather than a step — and becomes an invention. “It is natural for
inventions to be the result of team work rather than the result of a
single man’s genius. There is frequently more than one name on a pat-
ent,” says Zacharias.
And sometimes the improvement was never even intended. The STC-ECO,
developed for subsea applications, could turn out to be an asset onshore,
For the cooling cycle Midel is used as cooling fluid. It transports the too. Its seal-less design makes it particularly safe with regard to leakages.
excess heat from the copper wiring out of the steel capsule, to a heat This is particularly beneficial when it comes to the handling of hazard-
exchanger. Together with other auxiliary systems and the steel capsule, ous and toxic gases, like those containing mercury, H2S or CO. The solu-
the heat exchanger is located within a metal frame, which contains the tion also allows for greater plant safety, due to its fully integrated, canned
complete STC-ECO solution — in total measuring somewhat less than design. Compared to solutions consisting of discrete components, this
five cubic meters. means a substantial reduction of interfaces and thus of complexity. And
while space is not exactly a limiting factor on the seabed, it can be in land-
However, for Zacharias, who claims 28 entirely own inventions, along- based installations: The vertical, integrated concept of the STC-ECO re-
side 34 patents, work was not done simply by setting up a cooling cycle. duces its footprint, thus requiring less space than conventional solutions.
The wiring of the motor, which is surrounded by the cooling oil, must
be shielded from the process gas. This is done by means of a highly The application of the solution in the context of a live subsea offshore
resistant barrier. The resulting problem: the pressure of the gas tends project might still be some years away, when the long-term testing has
16 Venture May 2011

17. Spotlight
Top left: Prototype of the STC-ECO at NAMs Vries-IV gas-gathering site south of Groningen, Netherlands. Top right: Tubing of the STC-ECOs Midel
cooling system. Bottom left: The ancient smithy of Wolfgang Zacharias father. Bottom right: Assembly of the STC-ECO at Siemens Hengelo workshop.
been concluded successfully. During this process new issues might come an anvil and the hot fire in his father's smithy, where he had been trained
up, calling for both the creativity and perseverance of Wolfgang Zacharias to become a smith himself.
and his team. But no doubt, he would come up with a solution. In spite
of all the modesty he displays when asked about the recognition as Inno- The workshop still exists, although it is a little dusty now, having lain
vator of the Year: “look at all those other guys who were awarded. They idle for many years. “Who knows?” says Zacharias, “maybe I will take up
tend to have a lot more patents than I do. In that sense I am only average,” the hammer again when I retire.” He would then, once again, forge iron
he says, half joking. rather than ideas.
He has proven himself with his inventions, so does not need to prove
himself again with big words. In the near future Zacharias will retire, TEXT thomas chatterton P H O T O S florian Sander, harry reusmann, Edgar hendrassen
looking back at a professional life full of increasingly sophisticated F u R T H E R R E l AT E D I N F O R M AT I O N
engineering achievements. A career that had begun with a hammer and www.siemens.com/venture
May 2011 Venture 17

18. Monitor
SGT-750 — Proven technology,
perfected results
What do customers really want, and what is the range that is
important for the next stage of development? Benchmarking gave
Siemens the answers for the SGT-750 industrial gas turbine.
18 Venture May 2011

19. Monitor
Voices are heard from the Center in Norrköping. Fifty VIP guests — cus- 17 days in 17 years
control room: tomers, partners and journalists — and as many Not only the core engine, but also the overall
representatives from Siemens Energy, have package, is designed to provide owner con-
been welcomed by the head of Industrial Power, fidence. The modular design supports easy
ignition
Dr. Markus Tacke, to the inauguration of the maintenance and maximized uptime. The
sequence
start first industrial gas turbine for ten years, the SGT-750 was designed for maximized service-
Power on 37MW SGT-750. ability and minimized load-to-load downtime.
To start with, the modular build-up facilitates
Pressure
“Combining heritage with leading-edge design swift disassembly and parts replacement. If
oK
all and engineering, this piece of machinery is the customer chooses the on-site 24-hour gen-
systems
green designed to deliver maximized customer value erator swap option, Siemens can schedule
oK, day in, day out” the narrator’s voice impresses as little as 17 days’ maintenance time over a
let’s go upon us. 17-year service period. This 24-hour exchange
of the complete gas generator can is key to the
Count on it outstandingly high uptime capability.
And suddenly there we are, revolving in space Reliability was the big message that came back
and hurtling through the internals of the from the customer survey which Siemens car- Siemens’ solution-oriented approach has
SGT-750 gas turbine in a rollercoaster ride that ried out before embarking upon the design of resulted in a turnkey product that is fit for hard
takes us into unbelievably intimate contact its latest gas turbine. uptime and serviceability work in many demanding applications, not
with the newly designed turbine such as never were the criteria that were the backbone of least in the oil and gas industry.
before experienced. We almost touch the the turbine design. In order to assure that the
value words that loom at us on the full-surround requirements were met, an innovative design Filling the gap
screen approach was used: a full-scale 3D studio was SGT-750, as its name implies, will fill the gap
used so that the turbine could ‘grow’ in natural between the 32MW SGT-700 and 47MW SGT-800
scale, based on sophisticated modeling tech- gas turbines. With a launch output of 37 MW,
customer Value — uPtime — niques to indicate well in advance if there were the Siemens SGT-750 fits perfectly into the
Performance — new Power any pitfalls in the design. This technology Siemens range of industrial gas turbines from
range — world class dry enabled close cooperation between designers 4 to 47 MW. It offers high output, market-
low emissions — fleXiBility
and service engineers from the very earliest leading efficiency and future-proof DlE emis-
stages. This advanced 3D visualization program sion control.
enabled the engineers to check that the design
The occasion is the November VIP launch of allowed full serviceability of important compo- The SGT-750 is seen primarily as a fit for the
the latest Siemens industrial gas turbine. The nents and areas, without major disassembly future mechanical drive market, following the
venue is the recently inaugurated Visualization of the unit. market trend for greater unit power. Since the
Mechanical drive 37.11 MW (49,765 bhp)
• Fuel: natural gas
• Efficiency: 40.0%
• Heat rate: 9,002 kJ/kWh (6,362 Btu/bhph)
• Turbine speed: 3050–6400 rpm
• Compressor pressure ratio: 23.8:1
• Exhaust gas flow: 113.3 kg/s (249.8 lb/s)
• Temperature: 462° C (864° F)
• NOx emissions (with DLE, corrected to 15% O2 dry): ≤ 15ppmV
May 2011 Venture 19

20. Monitor
entire design of the SGT-750 has been targeted well suited where grid requirements call for and perfect adaptability to fixed or floating
to meet the stringent requirements of the maintained power output in the event of fre- installations, onshore and offshore, upstream,
oil & gas industry, the core engine is suitable quency drop. midstream or downstream.
for operation in extreme climates, from arctic
to desert environments, from -60°C to +55°C. Mechanical drive On upstream production facilities, it can be used
Additionally, the gas turbine meets the pitch- The sheer robustness and stability of the to drive pumps and compressors for various
and-roll requirements for installations on FPSO 37 MWs SGT-750 makes it a perfect option for applications such as associated gas reinjection,
and marine applications, in accordance with mechanical drive applications within the oil water injection or export gascompressors to
DNV rules and regulations. and gas industry. The dual-fuel online switch- forward produced gas to treatment facilities. In
over capabilities provide a unique built-in midstream applications it can drive gas pipe-
However, the turbine’s high efficiency and rapid flexibility when it comes to ambient climate, line compressors, the refrigerant compressor
start capability make it an equally competitive trains on mid-size lNG liquefaction plant (on-
machine for the power generation market. shore or offshore) or on liquefaction processes
SGT-750 sets a new standard of efficiency for using cascade processes. Waste heat from the
industrial gas turbines in this power range. turbine exhaust can also be recovered to provide
Reaching 38.7% in power generation applica- process steam or hot oil for oil and gas treat-
tions and afull 40% in mechanical drive ment and separation processes, or to raise steam
applications helps push fuel consump- to generate additional p ower from steam tur-
tion down to even lower levels, still bine generators, increasing the overall energy
keeping — and improving — all the efficiency of a facility.
benefits of
a robust, easy-to-service industrial
design.
A turbine for all seasons
Power generation 35.93 MW(e)
Power generation /cogeneration • Fuel: natural gas
In power generation and cogene- • Frequency: 50/60Hz
ration, SGT-750 demonstrates its • Electrical efficiency: 38.7%
flexibility, being the perfect option • Heat rate: 9,296kJ/kWh
for base load, standby power and (8,811 Btu/kWh)
peak lopping. The fast start-up and • Turbine speed: 6,100 rpm
cycling capability both support inter- • Compressor pressure ratio: 23.8:1
mediate to continuous operation with • Exhaust gas flow: 113.3 kg/s
improved turndown capability, high (249.8 lb/s)
efficiency and low emission levels. • Exhaust temperature: 462° C (864° F)
Through the use of a free power tur- • NOx emissions (with DLE, corrected
bine, the 36 MWe SGT-750 is also to 15% O2 dry): ≤ 15ppmV
20 Venture May 2011

21. Monitor
Siemens and Leon AB were awarded the regional annual marketing prize for their “Count on it” campaign of the year.
Keeping the turbine running Now it is time to board the specially decorated lNG (liquefied Natural Gas) is one of the
Reliability is always an important issue: never bus and visit the Finspong manufacturing site, possible solutions for all these issues, onshore
more so than in the demanding environments some 30 kilometers away. This is where the or offshore. The lNG value chain uses a gas
of oil and gas production and transport, where SGT-750 is being built, and where it is being turbine in several applications: as the driver for
surprises are to be avoided and rugged ma- presented today by the Finspong experts in the the main refrigerant compressors in the lique-
chinery and detailed planned maintenance are context of the overall product family. News on faction process; to provide power (and heat) for
essential. Operation of the rotating equipment these products is also on the agenda. the rest of the liquefaction plant, including any
is critical for the operator: no power, no produc- gas treatment facilities; and to provide power,
tion, no revenue. So the longer the plant is The first two units will be produced for testing and sometimes heat, for the regasification
able to operate without interruptions, the better at a specially designed rig. Testing will continue process at the lNG receiving terminal. Whatever
the financial returns for the operator. until the first commercial unit begins operation the specific solution selected, reliable sources
so that there is still time to make improvements of power and compression will be required and
In the SGT-750 reliability is inbuilt. The turbine prior to a full global release. First delivery is the gas turbine will be there to fulfil these
is programmed to run for four whole years of estimated for 2012. Siemens is currently in talks needs.
operation before a hot-section inspection is with several interested customers.
advised. Remote, on-line check of the complete The markets are there and the turbine will soon
engine is performed once a year from the man- It is anticipated that the SGT-750 will become a be available: together with the other solutions
ufacturing unit. standard in its range for power generation, in the Siemens Energy total offer, the new
since Siemens has incorporated the best features SGT-750 will contribute to generating power
Where do we go from here? from its turbine range into this machine. The and value for decades to come. Count on it!
The film ends with a breathless fly-in over des- power generation market is always in need of
erts and high seas — the natural world of the reliable and economic power producers and the
oil and gas markets. Time to test our orientation SGT-750 is entering a new power range, in-
as we leave our seats: I listen for reactions and creasing the company’s flexibility on the market.
comments: “Impressive, very impressive!”
“Brilliant. Fun and informative.” These com- Meanwhile the oil & gas market is facing its own
ments set the tone. Herbert Habersätter, SAAPI’s challenges: eliminating flaring of associated
gas turbine specialist and adviser, is more gas; operating in more remote and harsher
specific: “I appreciated the opportunity to talk environments; monetizing stranded gas assets;
directly to members of the development team,” and providing low carbon energy at the lowest TEXT Elise chaplin P H O T O S Siemens
he says “and I won’t forget the 3D-presentation possible cost to consumers located long distanc- F u R T H E R R E l AT E D I N F O R M AT I O N
and the trip through the turbine in a hurry!” es from the source of the oil and gas. www.siemens.com/venture
May 2011 Venture 21

22. E50001-E440-F156-V1-4A00
Deepsea Atlantic, a sixth-generation semi-submersible drilling rig areas. Along with its highly efficient design, the rig features elec-
designed by GVA Consultants and owned and operated by Odfjell trical solutions with state-of-the-art technology ensuring safe
Drilling, is ideally suited to operate in environmentally sensitive operation and high availability.

23. Availability is key at sea.
Highly reliable and high-performance electrical offshore equipment.
Solutions for the oil and gas industry
The entire electrical system, from the generation plant to the is key, and Siemens technology has proven itself superbly here,
drive systems, has been designed and supplied by Siemens. braving the elements and ensuring reliable operations – deliver-
As Deepsea Atlantic often operates in harsh climates, availability ing the Siemens promise literally anywhere and anytime.
www.siemens.com/oilandgas

24. www.siemens.com