Investigation of Inhibitors Performance on Asphaltene Precipitation due to CO2 Injection

Investigation of Inhibitors Performance on Asphaltene Precipitation due to CO2 Injection

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Part of #Investigation of Inhibitors Performance on Asphaltene Precipitation due to CO2 Injection# :

Publishing year : 2012

Conference : The first international conference on oil, gas, petrochemicals and power plants

Number of pages : 5

Abstract: In a CO2 gas displacement process, the injected CO2 can disturb the reservoir fluid stability; Induce flocculation and deposition of asphaltenes. Several procedures are used to remove or prevent asphaltene precipitation, but the uses of asphaltene inhibitors provide the most practical and economical solution for deposition treatments. In this work, we present the results obtained on the inhibitory effect of one commercial inhibitor namely IR95 and five non-commercial inhibitors, namely Benzoic Acid, Nonylphenol, Phenanthrene, Phthalic Acid and Salicylic Acid. Static tests indicate that CO2 concentration and temperature are the most important factors on which the asphaltenes precipitation depended. Results of inhibitor tests show that IR95 with more than 50% reduction in precipitation, have the best efficiency among other inhibitors