Subsea Power Grid: Enabling large-scale subsea processing

Transcription

1 siemens.com/energy/subsea Siemens at OTC 2013 The Siemens Oil & Gas newsletter Contents 2 Editorial Siemens subsea solutions 3 Ready to work in 4,000-meter-deep water 4 Subsea Power Grid: Enabling large-scale subsea processing 6 Offshore Drilling: Excellent reliability on board 7 Offshore Production: Solutions for highest reliability and availability Subsea Power Grid: Enabling large-scale subsea processing The Siemens Subsea Power Grid Qualification Program is attracting great interest from the global oil and gas community. As a reliable partner of the subsea industry, Siemens latest development, the Subsea Power Grid, is currently undergoing the marinizing and test phase. The Subsea Power Grid is a complete medium voltage power distribution system installed on the seabed, with subsea transformer, subsea switchgear and subsea variable-speed drives, as well as a comprehensive power control and communication system. This creates another milestone on the path to large-scale seabed processing facilities that can operate for long step-outs with the utmost reliability and withstand extreme pressure and temperature conditions. Siemens confidence in its ability to configure complex power transmissions to multiple subsea consumers is grounded in our experience as a technology leader in land-based power grids with distribution to various consumers.» Page 4 Offshore Drilling: Excellent reliability on board Innovative solution packages for offshore drilling that secure reliable operation and availability are in high demand. Such solutions are exactly what Siemens has to offer based on broad expertise in electrical, instrumentation, and telecommunication (EIT), rotating equipment, and water treatment solutions, as well as years of hands-on experience in the oil and gas business and marine applications. Siemens scope of supply covers the entire lifecycle of equipment and assets, thus ensuring longterm reliability and ideal investment protection.» Page 6

2 2 Editorial Siemens at OTC 2013 The Siemens Oil & Gas newsletter Siemens at OTC 2013 Siemens subsea solutions For the next few decades, a large part of the world s growing demand for energy will be met by oil and gas. However, the days of easy oil and gas are over, and more technology per barrel is required if production is to keep pace with demand in an environmentally sound way. Therefore, oil and gas producers around the world are focusing their attention on technically demanding onshore reservoirs, on unconventional resources, on deepsea fields, and next on fields in arctic regions. This is where installing facilities is a challenge in itself. Safety, efficiency, and technical reliability are of prime importance, because servicing offshore and especially deep-sea facilities requires a lot of effort. Siemens provides the answers for these challenges based on its leading technological expertise in electrical engineering, power generation, transmission and distribution, rotating equipment, automation, and water treatment. For all types of mobile units and jack-up rigs, Siemens delivers proven solution packages that ensure reliable operation and availability from power supply (including fault-tolerant systems) through drives for all applications to automation and management systems. Floating production, storage, and offloading vessels (FPSOs) call for an integrated design of all topside solutions as well as highest availability and operational efficiency. We can provide this, thanks to our comprehensive lifecycle services, our cuttingedge technologies, and our wealth of experience in furnishing offshore drilling and production facilities. For subsea applications, Siemens offers products and solutions for power, distribution, control, processing, and surveillance. Siemens also combines a high focus on R&D and broad experience with subsea power concept studies as well as marinization expertise in deep-sea transformers, switchgear, variable-speed drives and subsea power control. All of these are part of our subsea power grid solution. We began our marinization activities more than 15 years ago, and subsea technologies have since become an important business field that we are continually developing. Siemens is now one of the leading suppliers of complete in-field subsea distribution systems comprising hydraulics, electrical, and fiber-optic components that can be supplied individually or in complete packages as part of umbilical termination assemblies/heads. Through acquisitions we have also significantly increased our ability to marinize our industry-proven technology and accelerate our delivery of tailored solutions to the subsea oil and gas market. Power Siemens Subsea Power Grid, including subsea transformer, subsea switchgear, and variablespeed drive (VSD) High-power AC for subsea processing Pressurized power electronics Switches for dual ESPs: pipeline-heating power and control Distribution Full in-field distribution solutions: electric, hydraulic, and fiber optics SUTAs (Subsea Umbilical Termination Assembly) and TUTAs (Topside Umbilical Termination Assembly) Connectors Electrical distribution units Control SSIV (Subsea Isolation Valve) control systems Connectors and measurement devices Siemens advanced automation Greenfield or brownfield solutions Instrumentation packages Surveillance Environmental and reservoir monitoring Sensors Intelligent asset integrity with visualization We are looking forward to discussing the advantages of our offshore product and solution portfolio with you at OTC Siemens Subsea Power Grid: Enabling large-scale subsea processing

3 Siemens at OTC 2013 The Siemens Oil & Gas newsletter 3 Ready to work in 4,000-meter-deep water Siemens Tronic DigiTRON connectors are qualified to operate in seawater down to 4,000 meters. All of our DigiTRON connectors and distribution units provide you with faster lead times and higher flexibility. DigiTRON Siemens Subsea s DigiTRON Evolution: Providing reliability where you need it most underwater With over 110,000 connectors in service on over 400 projects worldwide, the DigiTRON range of connectors offers trusted quality and redefines the subsea connector market. Backward compatibility, refined enhancements, and increased reliability make Siemens DigiTRON+ and DigiTRONe the most technically advanced low-voltage subsea connectors. DigiTRON+ is an electrical connector and DigiTRONe the market s first fully qualified Ethernet connector with all the benefits of the DigiTRON product spectrum. DigiTRON+ Backward-compatible with existing DigiTRON products Fully qualified to operate at 4,000 meters depth pressure at full differential Certified to last for a 30-year lifespan PD-free (partial discharge) at 1.73 Uo and 2.50 Uo delivers long-term integrity 1000 mate/de-mates (750 dry followed by 250 turbid at 4,000 meters depth pressure) Fully machined connector body, which eliminates the need for welding Paddle handle with enhanced versatility DigiTRONe Ethernet connector Permits higher data rates for realtime control, enabling fast reactions to real-time subsea situations Fully qualified to operate at 4,000 meters depth pressure at full differential In full compliance with IEEE and the SIIS level 3 document, including traffic generator and cable analyzer tests Harnesses up to 160 meters in length (including test harness), capable of handling 100 Mbps full duplex data rate at 4,000 meters depth pressure Multiple harnesses mated together to create a total length of up to 160 meters (including test harness), capable of handling 100 Mbps full duplex data rate at 4,000 meters depth pressure Available for 12-way connectors only The SpecTRON range: Medium and High Power Subsea Electrical Connector Systems SpecTRON 10 connectors are commonly used for Multi-Phase Pumping (MPP) and Single-Phase Pumping (SPP) applications. The MPP or SPP is situated on the seabed and is joined to the pipeline, boosting flow from the well to top-side. The pumps increase oil recovery and can be specified for new field developments, or for existing fields to extend their life. SpecTRON 10 connectors have a nominal voltage rating of 6/10 (12) kv, in accordance with the IEC voltage class system. This makes them suitable for 3-phase system voltages up to 12 kv (Um). Maximum current throughput is up to 520 A, depending on the temperature and pressure inside the pump motor. This means the connectors can provide power to pump motors rated to 9 MW (12,000 hp), or to 5 MW (6,700 hp) for systems requiring Category C operation. SpecTRON 10 has been qualified to 450 bar test (4,500 meters) for use in deepwater to 3,000 meters. «Connectors and Sensors: reliability on the seabed Connectors and sensors are of critical importance for all kind of subsea applications. Our brands Tronic and Matre deliver a broad spectrum of reliable products. Matre stands for a wide range of temperature and pressure sensors and Tronic for electrical connectors that enable both power transmission and communication on subsea installations for subsea use. «

4 4 Subsea Power Grid: Enabling large-scale subsea processing The Siemens Subsea Power Grid Qualification Program is attracting great interest from the global oil and gas community. As a reliable partner of the subsea industry, Siemens latest development, the Subsea Power Grid, is currently undergoing the marinizing and test phase. The Subsea Power Grid is a complete medium voltage power distribution system installed on the seabed, with subsea transformer, subsea switchgear and subsea variablespeed drives, as well as a comprehensive power control and communication system. This creates another milestone on the path to large-scale seabed processing facilities that can operate for long step-outs with the utmost reliability and withstand extreme pressure and temperature conditions. Siemens confidence in its ability to configure complex power transmissions to multiple The Siemens Oil & Gas newsletter Siemens at OTC 2013 subsea consumers is grounded in our experience as a technology leader in land-based power grids with distribution to various consumers. Our commitment: High quality high reliability The Siemens Subsea Power Grid is based on our proven, high-quality industrial components: transformers, switchgear, and variable-speed drives. These power components can be installed on a common base frame distributed at the seabed and all components in the Siemens Subsea Power Grid are retrievable. Full flexibility and reliability The power electronics and most of the active components are installed in an oil-filled and pressure-compensated environment. This leads to optimal cooling conditions with 100 % natural cooling by convection, supporting reliability and reducing complexity. Built-in redundancy provides increased availability of the total system. Vacuum circuit breakers with very high MTBF values are installed in one-atmospheric SF 6 -filled pressure vessels. Monitoring for the best performance Dedicated power-management and performance monitoring ensures cost savings, extension of the system s service life, and reduced maintenance costs. To guarantee maximum availability, an integrated condition monitoring system will monitor the integrity of the power grid, evaluate changes and predict failure situations before leading to unexpected shut downs. Operational key data will be stored, enabling the optimization of operations. «Key facts about the Siemens Subsea Power Grid s design Scalable/flexible Designed and qualified for 3,000-meter water depth Oil-filled and pressurized Natural cooling No differential pressure on penetrations/connectors Reliable: 30-year design life Condition monitoring Universal and redundant control system The Siemens Subsea Power Grid components Subsea switchgear Modular design with vacuum circuit breakers Fluid-filled base module Pressure-compensated bus bar base section Cascadable design for more consumers Zero differential pressure at all penetration to seawater 3AC 50/60 Hz 36 kv 2000 A main busbar current 500 A feeder current

5 Siemens at OTC 2013 The Siemens Oil & Gas newsletter 5 Variable-speed drive (VSD) Multicell topology with built-in cell redundancy Fluid-filled and pressure-compensated power electronics 100 % natural cooling by convection Designed for 3000 meters water depth Condition monitoring High-power changeover switch (HPCS) Siemens HPCS is specially designed sures that the power switch remains for connecting two redundant subsea ESPs to one common power um- pressure is lost ( fail as-is ). in the same position if hydraulic bilical and power supply. The remotecontrolled unit features a simple and rugged design that allows for easy adaptation to diverse subsea applications. Switching can only occur in power-off mode with no voltage on the input cable. The hydraulic/ mechanical switching system en- Step-down transformer The design can be used on subsea distribution transformers in a wide power range. The trans former s electrical design is based on traditional onshore distribution transformers, but with an enhanced insulation system with improved efficiency. All materials have been tested for pressure and fluid compatibility in an extensive qualification program. In addition, the design has been verified with a full load heat run test in shallow water. The subsea transformer has an integrated sensor and monitoring system that can be seamlessly integrated in the Siemens subsea power control system. This provides the operator with a continuous display of the status of transformer integrity and the ability to optimize operations for enhanced safety. Pressure compensated Hybrid insulation Robust enclosure design with optimized natural cooling properties Biodegradable and environmentally friendly Midel 7131 fluid filling Flexible interfaces (dry- or wet-mate connections) Advanced condition monitoring Also suitable as step-down transformer for subsea boosting Qualified for 3,000 meter water depth 3 AC 50/60 Hz Input voltage: 36 to 145 kv Output voltage: 6 to 36 kv Power range: 1 to 100 MVA

6 6 The Siemens Oil & Gas newsletter Siemens at OTC 2013 Offshore Drilling: Excellent reliability on board Innovative solution packages for offshore drilling that secure reliable operation and availability are in high demand. Such solutions are exactly what Siemens has to offer based on broad expertise in electrical, instrumentation, and telecommunication (EIT), rotating equipment, and water treatment solutions, as well as years of hands-on experience in the oil and gas business and marine applications. Siemens scope of supply covers the entire lifecycle of equipment and assets, thus ensuring long-term reliability and ideal investment protection. Moreover, thanks to long-standing business partnerships with leading shipyards, naval architects, and drilling service operators, Siemens understands the needs and demands of the markets and how to deliver exact solutions. DP3 closed ring solution Power management is of vital importance for dynamic positioning. Failures in the power system components or external faults should be identified when they occur and be isolated from the rest of the system. A system operating in DP3 mode in closed ring configuration does this. And in case of malfunction of the primary safeguarding devices, a backup system will be put in operation. Siemens has worked with drilling majors and the classification society to develop solutions operating in DP3 mode with one fully integrated power system. Our solution will additionally result in a reduction of fuel demand (about 5 %), operating with only two engines online and working on higher power utilization to achieve 17 to 23 percent fewer operating hours on engines, resulting in several advantages: Lower emissions Reduced contamination of the engines Diesel engines running at a higher load level Improved selectivity in the main power system Improvements for the maintenance program of the vessel BlueDrive drilling rig power system For drilling jack-up rigs our new topology for the electrical system connects the generators directly to the DC bus via rectifier. There is no need for synchronization between generators and it allows load sharing. This new power solution can be combined with existing drilling and jacking drives and various power sources. It results in advantages in construction, operation, and maintenance, including these effects: Reduced weight (fewer switch boards and transformers) and size Ultra-fast engine startup Ultra-fast blackout prevention and reduced recovery time Lower noise for the crew Reduced fuel consumption Lower wear and tear BlueDrive jacking drives Siemens has developed an electrical variable-speed drive jacking system that can significantly speed up the jacking process. Its unique diagnostic systems give precise data feedback during operation, which allows optimal speed and torque control as well as synchronization. This helps reduce the possibility of mechanical overstress and wear of the legs, and makes the need for system-overrating a thing of the past. The new Siemens BlueDrive jacking drives thus make possible higher efficiency, time savings, costoptimization, and improved investment protection. What is more, the new BlueDrive jacking drives also help save energy, as less power and less cooling capacity are required. BlueDrive thruster drives Siemens has introduced an AC drive system specially designed for propulsion applications, which ensures the safe and reliable operation of the vessel under all conditions. Particular effort has been made to ensure reliable handling of both the dynamics within the power supply system and the various load conditions at sea. The BlueDrive system comes with a fast-responding blackout prevention system, and is capable of pre-charging. It can, therefore, be regarded as a non-heavy consumer. Its compact converters minimize footprint, and thereby costs, and the system s separate transformers ensure the utmost flexibility in the choice of mounting locations, thus saving up to 30 percent in space and reducing power loss in the electrical room by as much as 50 percent. «

7 Siemens at OTC 2013 The Siemens Oil & Gas newsletter 7 Offshore Production: Solutions for highest reliability and availability A good portion of the global oil and gas reserves are to be found offshore. This is the field of fixed platforms, semisubmersibles and floating production, storage, and offloading vessels (FPSOs). The latter are becoming increasingly important with oil and gas production penetrating deep-sea regions and with the increasing economic significance of smaller reservoirs. Achieving maximized availability and operating efficiency are central challenges for all units on board. Spacesaving design for all topside solutions in suitable modules is imperative. Siemens has extensive experience in equipping offshore production facilities: from the complete power supply system, via the drives, compressors, and integrated process solutions for gas and water, through to integrated automation and control including important marine systems. Siemens is a world technology leader in these fields, whatever concrete application is required. With our competence, our technologies, and our services we provide reliable, cost-effective solutions. Offshore production solutions from Siemens are prepared to meet tough challenges. We follow a clear concept to best fulfill the specific needs of construction and operation through: reliable technology offering maximized performance integrated solutions and turnkey packages predesigned, preengineered, pretested, adaptable to the vessel s specific challenges The basis for all this is cutting-edge technological competence and qualified services over the entire lifecycle. We provide complete OEM solutions, enable CAPEX and OPEX savings, provide reliability in project execution and system operations. This entails: Reduced number of interfaces and reduced execution time and cost risk Integration by Siemens as OEM means complete system performance and troubleshooting within OEM responsibility Uptime guarantee can be considered on project specific risk/reward basis for complete Siemens scope Entire scope from one OEM: uniformity across hull and topside reduces OPEX, opportunity to reduce CAPEX through knowledge of own equipment and design optimization Siemens offers the broadest portfolio for the topside, including major parts of the marine solutions, and a specific offshore project skill set required to understand codes and specifications and to successfully engineer, commission, and provide follow-up support. Siemens wealth of experience makes it possible to optimally match these offerings to the respective platform or vessel design and the specific requirements. Our specialized engineering departments design the solution packages in 3-D and configure the modules, applying the required American, British, Norwegian, or European code standards. The core components are produced at in-house manufacturing plants. Siemens is an all-around partner for offshore production plant constructors and operators over the entire lifecycle: from feasibility studies and the clarification of financing issues, via engineering, construction of the requisite components, and commissioning of the respective system packages, through to comprehensive services for reliable operation with maximized performance. As a proven technology partner for new-build projects or the conversion of a tanker into an FPSO, we demonstrate our capabilities in offshore applications day in and day out. Siemens offers a complete one-stop solution from concept to delivery of the modules. The result: turnkey modules that can be quickly installed on the platform or vessel, anchored in place and put into operation. Integrated Electrical Systems As one of the technology leaders in power generation, power transmission, and power distribution as well as electrical drives, Siemens is the right partner for topside power supply. Our Main Electrical Vendor Concept optimizes the cost/benefit ratio of your plant s power supply while minimizing risk, based on a carefully coordinated portfolio of high-quality products and services. As part of the concept, the customer and Siemens as a strategic partner define the best possible solution including future maintenance and operational aspects. Power Generation Siemens offers a broad portfolio of gas turbines and steam turbines for challenging offshore environments, meeting the strictest safety and reliability requirements. Our compact lightweight industrial gas turbines, ranging from 5 to 50 MW, are perfectly suited for demanding topsides applications, suitable for deck mounting, in-hull installations or as multiple units in single-lift modules. They offer high tolerance to fuels containing hydrogen sulfide, and can run on a wide range of gas fuels, from rich to lean, while the SGT-500 can also run on HFO or heavy crude oil. Dual fuel systems come as a standard option on all our gas turbines,

8 8 The Siemens Oil & Gas newsletter Siemens at OTC 2013 allowing for operation on liquid fuel at initial start-up and other occasions when gas fuel is not available. Furthermore, all engines can be equipped with our robust, reliable Dry Low Emissions combustion system, with nominal emissions below 25 ppm NO x on gas fuel, and the ability to operate on rich, lean and variable gas fuels. And with long times between overhauls and core exchange capability, high availability and hence maximum uptime is ensured. Power Distribution With a single power source on board a rig or vessel, power quality becomes an essential issue for the reliability and safety of all operations. In Siemens comprehensive power distribution solutions, all systems, products, and components are modularized, standardized, and fully assembled in E-house solutions pretested onshore. This includes MV gas- and air-insulated switchgear, LV switchgear, power and distribution transformers, the cable connections and bus ducts, the motor control center, and all protection and energy automation. Thanks to this approach, installation and commissioning times can be kept to a minimum. Water treatment Siemens offers a complete range of products, systems, and services for produced water treatment and water treatment for enhanced oil recovery. For offshore production requirements, this includes solutions for raw water, produced water, cleaning of seawater, and solutions for injection of seawater for pressure support and enhanced recovery support in the reservoir. Our produced water treatment/reinjection systems and raw/seawater injection solutions can be supported by feasibility studies, optionally combined with testing in the laboratory or a pilot project. Treatment options include solids separation (hydrocyclones), primary, secondary and tertiary produced water separation (hydrocyclones, flotation systems, walnut shell filters), and advanced treatment using membranes. Automation and control systems Automation and control are essential for reliable operation. As a global leader in these fields, Siemens can offer products and solutions to cover all main FPSO applications, including: Process automation Information management Power management Marine systems Safety Instrumented Systems (SIS) incl. ESD and F&G Telecommunications To ensure full interoperability with the business level and transparency for fast decision making, Siemens automation solutions seamlessly integrate all operations and all levels from SIMATIC PCS 7 automation at the field level to MES and ERP. This results in well-organized processes and real-time enterprise, highest plant availability and safety, and increased production at optimized operating efficiency. Gas compression After the gas-oil separation, associated gas can be compressed on an FPSO for transportation onshore. Or it can be used to fire the gas turbines and for reinjection purposes. However, both gas lift and gas reinjection require a compressor to provide the appropriate pressure. One example from Siemens broad lineup of field-proven electric and mechanical drive compressors optimized for FPSO requirements is the STV-SV barrel-type compressor, especially suitable due to its small space requirements. Like all other Siemens compressors, it is complemented with corresponding instrumentation and controls. «Published by: Siemens AG, Energy Sector, Oil & Gas Division Siemens AG For more information, please contact: Siemens AS Oil & Gas Solutions Østre Aker vei Oslo, Norway post.no@siemens.com All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract. TH