This paper describes the study of the effect of asphaltene precipitation and deposition on the development of the Marrat field<br>using a compositional simulation model with asphaltene modeling facilities.The model enables the simulation of asphaltene<br>precipitation, flocculation, and deposition including adsorption, plugging, and entrainment, and the resulting reduction in<br>porosity and permeability and changes in oil viscosity and rock wettability. A workflow was established in the study to i)<br>characterize the equation of state (EOS) by analyzing the fluid PVT and asphaltene data from the lab; ii) calibrate the<br>asphaltene model input parameters using the core flood experimental data; and iii) incorporate the EOS and the asphaltene<br>parameters into the full field simulation model.


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