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Influence of the Distance of the Chromatographic Analysis Point on the Energy Flow Calculation in GASBOL

[+] Author Affiliations
Marcelo Coutinho Durão, Mario Veiga Longa Junior, Julio César Costa de Mello Palhares, Ildemar Pinto Nunes

Transportadora Brasileira Gasoduto Bolívia-Brasil S.A., Rio de Janeiro, RJ, Brazil

Paper No. IPC2004-0269, pp. 2165-2169; 5 pages
  • 2004 International Pipeline Conference
  • 2004 International Pipeline Conference, Volumes 1, 2, and 3
  • Calgary, Alberta, Canada, October 4–8, 2004
  • Conference Sponsors: International Petroleum Technology Institute
  • ISBN: 0-7918-4176-6 | eISBN: 0-7918-3737-8
  • Copyright © 2004 by ASME


In Bolivia-Brazil Gas Pipeline the gas samples are only taken in two points along in its all extension, the first is located just at the entrance of the gas pipeline in Rio Grande, Bolivia, and the second sampling point is 550 km far from the first, exactly on Brazil’s border, where the pipeline comes to the TBG’s property. In Brazilian ground, the pipeline has no more additional inlet point and after this point in the border, no more any additional samples are taken. Nowadays, the measurement process has been simplified by the use of the gas composition analyzed in the day of the sampling as exactly the same gas that is filling out the whole gas pipeline at that moment. This simplification creates a mistake that is expected, but until then it had not been calculated. The present paper has an objective to identify the sampling point influence in the energy delivered in TBG’s city gates. To have a better analysis of this influence it is necessary to calculate the gas residence time from the border to the specific delivery point. This residence time is determined by simulation. Considering the difference among the energy used in the revenue and the energy calculated by the new gross heating value adjusted by the residence time of the gas, this paper concluded that the influence of the sampling point in the calculation of the delivered energy is small because the variation of the gross heating value along the period has also been low.

Copyright © 2004 by ASME



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