| 摘要 |
The present invention relates to a downhole punch for insertion into a wall of a casing. The downhole punch comprises a body having a first end and a second end and a through-bore forming an inner face of the body and an outer face of the body, wherein the first end comprises at least one cutting edge at least forming a leading tip or a leading edge for punching an opening in the casing, and a component is arranged in the through-bore. The present invention also relates to a downhole valve for insertion into a wall of a casing. The downhole valve comprises a housing having a first end and a second end and an inner face and an outer face. Furthermore, the invention relates to a downhole tool for inserting a downhole valve into a wall of a casing, to a downhole system comprising the downhole tool as well as to a downhole method for insertion of a downhole unit into a casing downhole.
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