High-pressure injection system for introducing an injection fluid into a ground surrounding a borehole comprises a high-pressure injection nozzle whose position is radially adjustable outside the drilling pipe

摘要

The high-pressure injection system for introducing an injection fluid into a ground surrounding a borehole comprises a high-pressure injection nozzle (16) which is held at the drilling pipe (1) so that it is adjustable in a radial direction outside the drilling pipe.