... :The electric submersible pump will provide satisfactory production operation under the following conditions:1.Casing size :5½” , 7” ,9(5/8)”2.Well temperature ... :50°C,90°C,120°C,150°C3.When well fluid is a mixture of oil,gas and water,PH ... sand (by weight)≤0.05%,IF exceeding the standard ,the pump's head life and displacement should adjusted respectively when ordering