Device for evaluating damage of fracturing fluid to reservoir and operation method thereof

A device for evaluating damage of fracturing fluid to reservoir, comprising a liquid storage tank, a suction tube, a chromatography device, a bracket, a receiving container, and a height adjuster, wherein:

• the bracket is composed of an installing clip, a first base and a supporting rod, the supporting rod is fixed on the side of the first base, and the supporting rod is fixed with the installing clip on the upper end;
• the middle of the first base is fixed with a height adjuster, and the upper end of the height adjuster is fixed with an installing board;
• the chromatography device is composed of silica gel particles, a sand chip, a valve and a chromatography column, and the chromatography column is installed on the installing clip of the bracket;
• the lower part of the chromatography column is fixed with the sand chip, the upper part of the sand chip is fixed with silica gel particles in the chromatography column, and the bottom of the chromatography column is fixed with the valve;
• the receiving container is placed on the first base, and the upper opening of the receiving container is facing the lower end of the chromatography column;
• the liquid storage tank is placed on the installing board, and the liquid storage tank and the chromatography column are connected through the suction tube;
• wherein the height adjuster is comprised of a platform, a second base, two rotation supporting rods that cross into a scissors shape, and an adjusting handle, the lower ends of two rotation supporting rods that cross into a scissor shape are placed on the second base, the upper end of the rotation supporting rod is fixed with the platform, one end of the two rotation supporting rods is fixed to one side of the second base and the platform through the second fixed base, respectively;
• the other ends of the two rotation supporting rods are mounted in the grooves on the other side of the second base and the platform through a wheel, and the second base and the platform on the other side of the second base are respectively fixed with an adjusting handle through a spiral structure, one end of the adjusting handle is in contact with the wheel through the adjusting block, the middle of the two rotation supporting rods can rotate around the shaft, the two ends of the two rotation supporting rods can respectively rotate around the second fixed base and the wheel.