/n/n551 Advanced Phase behaviour Assignment No. 4 Calculation of viscosity using recently published papers. Given the reservoir pressure, temperature, oil gravity and viscosity data in the attached Excel sheet. 1- Evaluate the following published papers, that is mentioned in the word attachment (tables and references are given) and find the best accurate one for dead oil viscosity, saturated oil viscosity and undersaturated oil viscosity. 2- Modify the constants in the best performing one of the method(s), and/or propose a different function form to minimize the errors in step one.

Fig: 1