Abstract: PHP casing hydraulic packer has been widely used in the Tahe oil field; however, with the deepening of oilfield exploration and development, its heat and pressure resistance need improment. We use thicker packer wall and more heat resistive plastic tube to upgrade PHP-2 packer, which is outstanding for high pressure diffe-rence resistivity, high temperature resistivity, recyclable and less cost compared to imported permanent packer. The optimized packer has a broad application prospect in the Tahe oil field.