Well wall finishing tool

The invention relates to a well wall finishing tool, and belongs to the field of well drilling. The well wall finishing tool comprises a central pipe, a shell, a ball seat, a lower connector, a cutting knife body and a thrust ring. The central pipe extends in the first direction, the shell is arrang...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XU ZHIWEI, CHEN SHASHA, GAO WEI, ZHAO GUOYING, YANG KAI, LIU QINGHE, YANG GUANKE, ZHANG DONGSHENG, DING ZHIHE, XIE DONGPIN, LI QING, LU LIMING, LUO DA, CHEN YE, TANG LIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	The invention relates to a well wall finishing tool, and belongs to the field of well drilling. The well wall finishing tool comprises a central pipe, a shell, a ball seat, a lower connector, a cutting knife body and a thrust ring. The central pipe extends in the first direction, the shell is arranged on the central pipe in a sleeving mode, the shell at the first end is connected with the central pipe in a sealed mode, a first annular space is formed between the shell at the second end and the central pipe, the shell is provided with a sliding groove, and the sliding groove is provided with a first sliding side face and a blocking structure. The ball seat is used for controlling the inner cavity of the center pipe to communicate with the first annular space or the inner cavity of the lower connector. And the lower joint is fixedly connected with the shell. The cutting tool body is located in the sliding groove, and the cutting tool body is provided with cutting teeth and a second sliding side face. The thrust