Rotary joint acting on multi-path fluid and multi-core electric appliance connection and downhole instrument

• Main Authors: TIAN ZHIBIN, XUE YONGZENG, LI GUANGSHUAI, CHU XIAODONG, SU HECHENG, HUANG LIN, GUO SHUSHENG, FENG YONGREN, CHEN YONGCHAO, PENG SHUO, LIU TIEMIN, ZHOU MINGGAO
• Format: Patent
• Language: Chinese; English
• Published: 18.01.2022
• 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

The invention discloses a rotary joint acting on multi-path fluid and multi-core electric appliance connection and a downhole instrument. The rotary joint comprises a shell, a fixed connector, an oil passing lead screw, a lower connector, a lead screw nut and a liquid channel; the oil passing lead screw is rotationally connected with the shell, a hydraulic cavity is defined by the shell and the oil passing lead screw, and the hydraulic cavity communicates with a hydraulic module and is used for driving the lead screw nut to slide so as to drive the oil passing lead screw to rotate; the liquid channel comprises a first connecting hole, a first cavity, a liquid conduction hole, a second cavity and a second connecting hole; the downhole instrument comprises a controller, a first short section and a rotating connector, the first short section is connected with the rotating connector, and the controller is electrically connected with the hydraulic module and the direction sensor. The invention relates to the field