Abstract: An effective method is proposed to resolve the problems about how to saparate oil from sand in crude oil storage and transportation and how to clear the sedimental sand in storage tank. A newly designed clearing sand frame can make the sedimental sand collected and piled up in blind angle of the tank circumference and suck it out of the tank for treatment. It can prevent sand pump from blocking up and flow-cutting, and keep the pump running uninterruptedly. This scientific and technological achievement has won Chinese patent.