Casing section milling tool suitable for sidetrack horizontal well

The utility model provides a casing section milling tool suitable for a sidetrack horizontal well, which comprises a main body, an upper joint is arranged at the upper part of the main body, a lower plug is arranged at the lower part of the main body, a piston and a piston rod communicated with the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HE SHIMING, HE MINGMIN, GAO LEI, XUE QINSONG, TANG MING, LI SHUANGCAI, CHEN XIANGRU
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The utility model provides a casing section milling tool suitable for a sidetrack horizontal well, which comprises a main body, an upper joint is arranged at the upper part of the main body, a lower plug is arranged at the lower part of the main body, a piston and a piston rod communicated with the piston are arranged in the main body, and communicated liquid flow channels are arranged in the piston and the piston rod. A spring is arranged at the upper part of the piston, the other end of the spring is connected with the inner wall of the main body, and the spring can limit the piston to move up and down in the main body; a plurality of cutter containing cavities are evenly formed in the side wall of the main body around the axis, the cutters are arranged in the cutter containing cavities through rotating shafts, and the cutter containing cavities are communicated with the interior of the main body through conical block outlets; a conical block is arranged on the outer side of the piston and arranged in the c