Formation center tester(FCT) is made up of hydraulic power joint,double PACKER joint,opposing infuse joint,numeric pump exhausting joint,sensor joint and sampling tube joint.

• 钻井油气层测试器是由液压动力短节、双PACKER短节、反向注入短节、数字泵抽短节、传感器短节和取样筒短节组成的。