Experimental Study of Asphaltene Deposition During Different Production Mechanisms

Tannaz Pak, R Kharrat, M Bagheri, K Khalili, V Hematfar

Research output: Contribution to journalArticlepeer-review


Sudden changes in key parameters such as pressure, temperature, and fluid composition may result in asphaltene precipitation and deposition, consequently reducing permeability and porosity as well as well injectivity and productivity. Sandstone cores of an Iranian reservoir were studied under high pressure and temperature. Asphaltene deposition was studied in recycled gas injection, CO2 injection, and natural depletion experiments. The authors observed that these processes could be ranked for the deposition severity viewpoint in the aforementioned order. Qualitatively investigation of cores indicated nonuniform deposition of precipitated asphaltene along a flooded core and reducing deposition from entering core terminal to the core outlet.

Original languageEnglish
Pages (from-to)1853-1863
JournalPetroleum Science and Technology
Issue number17
Publication statusPublished - 2 Aug 2011


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