Joint expansion-proof drilling tool connector

An expansion-proof drill connector for transmitting drill stem torque, sealing drilling fluid and bearing various working conditions underground comprises an outer threaded connector (1), oblique shoulders (2), threads (3) and an inner threaded connector (4), and is characterized in that the outer t...

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Bibliographische Detailangaben
Hauptverfasser:	CHI JUN, AN WENHUA, ZHOU PING, LU SHUANLU, ZHOU JIE, HE SHIMING, FENG SHAOBO, LUO FAQIAN, JIA HUAMING, KANG YANJUN, LU QIANG, GONG JIANWEN, SUN JIJUN
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:	An expansion-proof drill connector for transmitting drill stem torque, sealing drilling fluid and bearing various working conditions underground comprises an outer threaded connector (1), oblique shoulders (2), threads (3) and an inner threaded connector (4), and is characterized in that the outer threaded connector (1) is connected with the inner threaded connector (4) through the threads (3), and thread large ends of the outer threaded connector (1) and the inner threaded connector (4) are equipped with the oblique shoulders (2). The utility model utilizes the oblique shoulders to replace straight shoulders, and increases expansion-proof property by utilizing component force generated by shoulder contact, simultaneously increases 10%-15% torsional strength of the connector, and is favorable for reducing and even avoiding drill thread-off accidents.