Effect of pipe diameter on horizontal oil-water flow before and after addition of drag-reducing polymer part I: Flow patterns and pressure gradients

A. Abubakar, Y. Al-Wahaibi^*, T. Al-Wahaibi, A. R. Al-Hashmi, A. Al-Ajmi, M. Eshrati

^*المؤلف المقابل لهذا العمل