Downhole crushing nipple and downhole crushing tool

The utility model belongs to the technical field of drilling, and particularly discloses an underground crushing nipple. The connector comprises a body which comprises an upper connector and a lower connector. The cutting mechanism is arranged between the upper connector and the lower connector and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI WENXIA, YI HAO, ZHANG JUN, LI SHUANGGUI, YU YANG, LI SHAOAN, CHEN XIUPING, ZHAO CHANGJU, LIU BIAO, LI FEI, LIU JINGTAO, LIU XIAOMIN, WANG JUHE, JIA XIAOBIN
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 utility model belongs to the technical field of drilling, and particularly discloses an underground crushing nipple. The connector comprises a body which comprises an upper connector and a lower connector. The cutting mechanism is arranged between the upper connector and the lower connector and comprises a first spiral blade part, a second spiral blade part and a chip groove. The first spiral blade parts and the second spiral blade parts are alternately arranged on the periphery of the body in the circumferential direction. The second spiral blade part comprises a first auxiliary cutting face, a second auxiliary cutting face and a third auxiliary cutting face, wherein the second auxiliary cutting face and the third auxiliary cutting face are arranged on the downstream portion of the first auxiliary cutting face. The first auxiliary cutting face comprises a plane and an inclined face arranged on the downstream portion of the plane. In addition, the utility model further discloses an underground crushing to