scholarly journals Development of Offshore Gas Turbine Packages for Power Generation and Mechanical Drive

1980 ◽  
Author(s):  
B. G. Hulme
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Arabian Gulf ◽  
Structural Requirements ◽  
Design Considerations ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Preferred Solutions

This paper describes the application of aero-derivative gas turbines for power generation and mechanical drive on fixed offshore oil and gas platforms. Established installation concepts are discussed and a comparison is made between two designs of pre-packaged power plant for installation on North Sea and Arabian Gulf platforms respectively. The structural requirements of such packages are analyzed and the design considerations for a Warren Truss structured machinery module are outlined. Some of the problems associated with installing packaged aero-derivative gas turbine machinery in the extremely aggressive offshore environment are highlighted and preferred solutions are proposed.

Requirements for Gas Turbine Inlet Systems in Russia

2009 ◽  
Author(s):  
Tagir R. Nigmatulin ◽  
Vladimir E. Mikhailov
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Inlet System ◽  
Climate Zones ◽  
Russian Market ◽  
Turbine Inlet ◽  
Industrial Gas Turbines

Russian power generation, oil and gas businesses are rapidly growing. Installation of new industrial gas turbines is booming to fulfill the demand from economic growth. Russia is a unique country from the annual temperature variation point of view. Some regions may reach up to 100C. One of the biggest challenges for world producers of gas turbines in Russia is the ability to operate products at power plants during cold winters, when ambient temperature might be −60C for a couple of weeks in a row. The reliability and availability of the equipment during the cold season is very critical. Design of inlet systems and filter houses for the Russian market, specifically for northern regions, has a lot of specifics and engineering challenges. Joint Stock Company CKTI is the biggest Russian supplier of air intake systems for industrial gas turbines and axial-flow compressors. In 1969 this enterprise designed and installed the first inlet for the power plant Dagskaya GRES (State Regional Electric Power Plant) with the first 100MW gas-turbine which was designed and manufactured by LMZ. Since the late 1960s CKTI has designed and manufactured inlet systems for the world market and been the main supplier for the Russian market. During the last two years CKTI has designed inlet systems for a broad variety of gas turbine engines ranging from 24MW up to 110MW turbines which are used for power generation and as a mechanical drive for the oil and gas industry. CKTI inlet systems with filtering devices or houses are successfully used in different climate zones including the world’s coldest city Yakutsk and hot Nigeria. CKTI has established CTQs (Critical to quality) and requirements for industrial gas turbine inlet systems which will be installed in Russia in different climate zones for all types of energy installations. The last NPI project of the inlet system, including a nonstandard layout, was done for a small gas-turbine engine which is installed on a railway cart. This arrangement is designed to clean railway lines with the exhaust jet in a quarry during the winter. The design of the inlet system with efficient multistage compressor extraction for deicing, dust and snow resistance has an interesting solution. The detailed description of challenges, weather requirements, calculations, losses, and design methodologies to qualify the system for tough requirements, are described in the paper.

An Investigation Into the Effect of Turret Mooring Location on the Vertical Motions of an FPSO Vessel

1999 ◽  
Vol 121 (2) ◽  
pp. 71-76 ◽  
Author(s):  
K. P. Thiagarajan ◽  
S. Finch
Keyword(s):  
Oil And Gas ◽  
Single Point ◽  
Mooring System ◽  
Interior Space ◽  
North West ◽  
Design Considerations ◽  
Oil And Gas Fields ◽  
Offshore Oil And Gas ◽  
Gas Fields ◽  
Offshore Oil

Turret-moored floating production storage and offloading (FPSO) vessels have found application in several offshore oil and gas fields in Australia’s North West Shelf (NWS). These vessels are either custom-built or converted tankers, with an internal or external turret. The position of an internal turret is decided based on a number of design considerations, primarily, available deck and interior space, and weathervaning capabilities. It is known that turret position can influence vertical motions and accelerations of a vessel, but this factor has not been given much importance, in comparison with the effects on the horizontal plane motions, primarily surge. This paper presents the results of a pilot study conducted at the Australian Maritime College, Tasmania, to study the vertical motions of a single-point moored FPSO model in waves, while systematically varying the mooring position across the length of the model. The displacement of the vessel was held constant at 50-percent-loaded condition. A single-point mooring system was designed and implemented on the model to simulate the prototype turret mooring system. Results show that the mooring location significantly affects the vertical motions and accelerations of the vessel. Astern turrets were found to produce higher heave and pitch than other locations tested. Although turrets positioned close to the longitudinal center of gravity produced the lowest overall motions, it is suggested that turret position forward of midships be preferred, as it provides a balance between lowering vertical motions and improving weathervaning characteristics.

Gas Turbines or Electric Drives in Offshore Applications

2005 ◽  
Author(s):  
Rainer Kurz ◽  
Cynthia Sheya
Keyword(s):  
Power Generation ◽  
Electric Motor ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Generation Plant ◽  
Power Generation Plant ◽  
Offshore Oil And Gas ◽  
Optimum Solution

Offshore oil and gas production requires both electric and mechanical power for various applications. Traditionally, gas turbines have been the driver of choice for both the power generation, compression and larger pump applications. Today, an alternate approach of electric motor drivers is sometimes considered for pump and compressor drivers. In this case, the power for the electric motor and utility power is supplied by larger gas turbines used as a central power generation plant. This is sometimes referred to as the “All Electric” solution. There are several important factors to be evaluated when considering options and selecting the optimum solution for this type of application. Based on general assumptions on the parameters and characteristics of possible solutions, decision criteria are derived and the sensitivity of the results relative to varying assumptions is determined.

Flexible Combined Heat and Power Systems for Offshore Oil and Gas Facilities With CO2 Bottoming Cycles

2014 ◽  
Author(s):  
Marit J. Mazzetti ◽  
Yves Ladam ◽  
Harald T. Walnum ◽  
Brede L. Hagen ◽  
Geir Skaugen ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Power Production ◽  
Combined Heat And Power ◽  
Operating Conditions ◽  
Water Separation ◽  
Exhaust Heat ◽  
Offshore Oil And Gas ◽  
Offshore Oil

In this work different concepts are investigated for combined heat and power production (CHP) from offshore gas turbines. Implementation of such technology could improve energy efficiency of offshore oil and gas production and lead to reduced fuel consumption and resulting CO2 emissions. Offshore electric power is in most cases generated by gas turbines operating in a simple cycle. However it would be desireable to increase energy efficiency by adding steam or CO2 bottoming cycles to produce power from the exhaust heat. However part of the heat from the gas turbine exhaust is normally used for onboard process heat for the oil/water separation process among others, this must be taken into consideration when estimating capacity for additional power production. Different CHP concepts will be evaluated at different operating conditions while running the turbines in both design and off-design mode The results show that it is possible to produce an additional 6–8 MW of electrical power from a 32 MW turbine (depending on the conditions) while using 15 MW of heat from the exhaust for on-board processing.

Kongsberg Gas Turbines Through Fifty Years: A Review of the Products and the History

2018 ◽  
Author(s):  
Tore Naess
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Trade Mark ◽  
Gas Industry ◽  
The North ◽  
New Business ◽  
Emergency Power

In 1964 Kongsberg Våpenfabrikk AS decided to develop a small gas turbine for power generation, primarily for stand-by and emergency power. The engine was called the KG2 and had a unique all radial rotor design which was to become the trade mark for the later Kongsberg designs. The onset of the oil exploration in the Norwegian sector of the North Sea in the 1970’s gave the new business an opportunity to qualify for continuous drive applications and to expand into the international oil- and gas industry. In the following years a larger engine, the KG5, was launched and a third engine program was initiated, but never completed. The gas turbine know-how that was established in Kongsberg in these years was of great significance to the overall Norwegian gas turbine competence environment and was a deciding factor when Dresser-Rand first partnered with and later, in 1987, acquired the business. Under the new ownership the company became able to offer compressor- and power generation packages based on large aero-derivative gas turbines and it was soon recognized as a significant supplier, both nationally and internationally. The present paper provides a review of some of the unique design features of the KG series of engines as well as some of the typical applications. It also describes the transformation of the company from a small industrial gas turbine supplier to the recognized supplier of large, compressor- and power generation packages for the oil and gas industry.

Compound-Cycle Gas-Turbine Engines for Offshore Oil and Gas Platforms

2018 ◽  
Vol 53 (9-10) ◽  
pp. 584-591
Author(s):  
V. T. Matveenko ◽  
V. A. Ocheretyanyi ◽  
A. G. Andriets
Keyword(s):  
Gas Turbine ◽  
Oil And Gas ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Offshore Oil And Gas ◽  
Offshore Oil

Dynamic Performance of Power Generation Systems for Off-Shore Oil and Gas Platforms

2014 ◽  
Author(s):  
Leonardo Pierobon ◽  
Krishna Iyengar ◽  
Peter Breuhaus ◽  
Rambabu Kandepu ◽  
Fredrik Haglind ◽  
...  
Keyword(s):  
Power Generation ◽  
High Pressure ◽  
Gas Turbine ◽  
Dynamic Model ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Dynamic Performance ◽  
Transient Operation ◽  
Generation System ◽  
Power Generation System

On off-shore oil and gas platforms two or more gas turbines typically support the electrical demand on site by operating as a stand-alone (island) power system. As reliability and availability are major concerns during operation, the dynamic performance of the power generation system becomes a crucial aspect for stable operation and prevention of unwanted shut down in case of disturbances in the local grid. This paper aims at developing and validating a dynamic model of the gas turbine-based power generation system installed on the Draugen off-shore oil and gas platform (located in the North Sea, Norway). The dynamic model of the SGT-500 gas turbine includes dynamic equations for the combustion chamber and for the high pressure, low pressure and turbine shafts. The low and high pressure compressors are modeled by using quasi steady-state conditions by scaling the maps of axial compressors employing a similar design point. For the turbines, the Stodola equation as well as a correlation relating the isentropic efficiency and the non-dimensional flow coefficient is utilized. The model is implemented in the Modelica language. The dynamic model of a single SGT-500 gas turbine is first verified by comparing the transient response for a given load variation with the results of a non-physical Matlab model developed by the gas turbine manufacturer and adapted to the power set-point of the original engine installed on Draugen. Subsequently, the complete power generation system consisting of three gas turbines is simulated during transient operation and the results are compared with operational data provided by the platform operator. The model is also applied to evaluate the transient response of the system during peak loads. The results suggest that the highest accuracy (average relative error ∼1%) arises on the prediction of the rotational speed of the high pressure shaft, while the largest deviation (average relative error ∼20%) occurs in the evaluation of the pressure at the outlet of the low pressure turbine. As waste heat recovery units (e.g. organic Rankine cycles) are likely to be implemented in future off-shore platforms, the proposed model may serve in the design phase for a preliminary assessment of the dynamic response of the power generation system and to evaluate if requirements such as minimum and maximum frequency during transient operation and the recovery time are satisfied. Furthermore, as the model is based on physics it can be coupled with the measuring instruments to monitor the thermodynamic variables at the inlet and at the outlet of each engine component.

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