And it determines the specific design step of the separation device of the expansiontube.
确定了膨胀管分离装置具体的设计步序。
2
It can also used for gravel packing completion and expansiontube completion to improve high sealing performance.
可用于砾石充填完井和膨胀管完井，进一步提高密封性。
3
The results show that the expansiontube is stable in the expansion-deformation stage, and features linear overlap characteristic in energy absorption and easy to control;