Double inflatable packer

In principle, a double inflatable packer consists of 2 packers connected by means of a connecting tube with outlets, especially designed for this purpose. After the double inflatable packer has been inserted in a borehole or e.g. in a pipe, the expanded inflation elements ensure that the material flows out only of the lateral outlets of the connecting tube. After deflation the double inflatable packer can be moved further or pulled out. In that way the boreholes can be injected step by step or e.g. each single sleeve very precisely.