| 摘要 |
A method and a device for establishing an underground borehole ( 10 ) and setting a casing ( 6 ) in the borehole ( 10 ), wherein the running tool ( 1 ) including a drilling tool ( 14 ), an expandable casing ( 6 ), an expansion tool ( 32 ) and a packer ( 30 ) which is arranged to seal against the wall of the borehole ( 10 ), is placed at the bottom of the borehole ( 10 ), whereupon the borehole ( 10 ) is drilled to the necessary length in order then to set the expandable casing ( 6 ), and in subsequent operations the casing is reinforced and a completion string is run, having built-in cables for downhole control and monitoring.
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