Experimental calculation of permeability reduction of porous medium by asphaltene precipitation in crude oil systems
Publish place: 12th National Iranian Chemical Engineering Congress
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NICEC12_790
تاریخ نمایه سازی: 30 شهریور 1387
Abstract:
In this work, we prepared the data of the permeability reduction by asphaltene precipitation in porous medium and precipitation and re-dissolution of asphaltenes were studied for an Iranian relatively heavy crude oil system. A series of experiments were designed and carried out to quantitatively obtain the permeability reduction in slim tube porous media and examine the amount and reversibility of asphaltenes precipitation upon the change in the solvent concentration along with the temperature. Experiments were conducted in both porous and non-porous media. As a porous medium, a slim tube apparatus was used which is a one- dimensional model reservoir. Generally, with these experiments obtained the amount of permeability reduction in porous medium and also showed that the precipitation is completely reversible for oil under study upon both composition and temperature changes. n-Heptane was used as the precipitant, and a temperature range of 30 to 70°C was applied to perform the temperature effect tests.
Authors
Abbas Khaksar Manshad
Oil and Gas Center of Excellence, Department of Chemical Engineering, University of Tehran, Tehran, Iran
Siavash Ashoori
Department of Petroleum Engineering, Petroleum University of Technology, Ahwaz, Iran
Mohsen Edalat
Oil and Gas Center of Excellence, Department of Chemical Engineering, University of Tehran,Tehran,
Gholamhossein Montazeri
Oil and Gas Center of Excellence, Department of Chemical Engineering, University of Tehran, Tehran
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