Over the second half of the Ninenties, Snamprogetti and Snam, with the cooperation of ENI Divisione Agip, Saipem and EniTecnologie, have been working for a new concept of LD (long distance) transportation of natural gas via cross country pipelines, based on HP (high pressure) larger than the traditional 7.5 to 10 MPa, here called LP (low pressure), and advanced technologies. This paper describes the economic advantages of the new LDHP (long distance high pressure) gas transportation concept, in terms of investment and operating costs; the findings of the application of a mathematical model developed for the determination of the optimum pipe diameter and number of compression stations for both HP and LP alternatives are discussed. The economic comparison referred to a representative case, that is a transmission system of 5,000 km for a specified transport capacity of 15 to 30x10exp 9) Sm3/y, shows that the competitiveness of LDHP transportation increases with the increase of the flow rates, reaching a very remarkable advantage for quantities exceeding 10x109 Sm3/y. At present ENI Group companies are engaged in further development focused on the application of high grade steels (X-100), and aiming at obtaining further cost reduction while both ensuring the required system reliability and meeting the specified safety requirments.


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    Title :

    High pressure long distance pipelines: Technical - Economic analysis


    Additional title:

    Eine technisch-wirtschaftliche Analyse zu sehr langen Hochdruckpipelines an Land


    Contributors:
    Donati, E. (author) / Ercolani, D. (author)


    Publication date :

    2000


    Size :

    12 Seiten, 7 Bilder, 1 Tabelle, 13 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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