The well packer uses two holes(two tubes) that each has independent pacing mode with four ram cores in pairs consists of ram core,combined thruster,packing chamber,structure and positioning assembly.

• 封井器采用2孔(2管)各自独立封闭方式的4个闸芯成对配置,主要由闸芯、组合推进器、密封部分、结构式壳体及装配定位装置组成。