Novel horizontal well safety joint

The utility model relates to the technical field of horizontal wells, and discloses a novel horizontal well safety joint which comprises a lower joint, an upper joint and a connecting sleeve, the outer surface of the connecting sleeve is in threaded connection with the inner wall of the lower joint,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FU RUI, DUAN XIAODONG, HOU HAIWEI, SONG JIANHUA, WANG LIANZHONG, GUO CHAO, DONG FANGJIE, LIU XIANGYANG, GAO ZHAOLI, WEI JUNFAN
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 relates to the technical field of horizontal wells, and discloses a novel horizontal well safety joint which comprises a lower joint, an upper joint and a connecting sleeve, the outer surface of the connecting sleeve is in threaded connection with the inner wall of the lower joint, the outer surface of the connecting sleeve is in threaded connection with the inner wall of the upper joint, and the upper surface of the lower joint is in contact with the bottom surface of the upper joint. Two first fixing holes are formed in the outer surface of the lower connector, two second fixing holes are formed in the outer surface of the connecting sleeve, a fishing shear pin is jointly installed on the inner wall of each first fixing hole and the inner wall of each second fixing hole, two sets of grooves are formed in the upper surface of the lower connector, and two sets of protruding blocks are installed on the bottom face of the upper connector. The outer surface of each group of bumps is clamped wit