Tubular column internal cutter

The application discloses tubular column internal cutter, it is including the top connection, main part and the plug that connect gradually, the middle part of main part is provided with the cutting knife seat, is provided with the sword piece in the cutting knife seat, the sword piece to stretch ou...

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Bibliographic Details
Main Author ZHANG DIANXIN
Format Patent
LanguageChinese
English
Published 28.11.2017
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:The application discloses tubular column internal cutter, it is including the top connection, main part and the plug that connect gradually, the middle part of main part is provided with the cutting knife seat, is provided with the sword piece in the cutting knife seat, the sword piece to stretch out the direction perpendicular with the axis of main part, be provided with sword piece actuating mechanism in the main part of sword piece front portion, be provided with sword piece canceling release mechanical system in the main part at sword piece rear portion, stretching out or rebounding from the cutting knife seat in is accomplished through sword piece actuating mechanism and sword piece canceling release mechanical system to the sword piece. The utility model provides an internal cutter is connected in special screw rod brill lower part, connects the throttle pressure of head section stem bar poor in the utilization, makes the guide way down, and the sword piece can only be radially outwardly directed along
Bibliography:Application Number: CN20172426530U