CONNECTING STRUCTURE FOR DRILL COLLAR OF MEASUREMENT-WHILE-DRILLING INSTRUMENT, AND MALE AND FEMALE CONNECTORS FOR DRILL COLLAR SUB

摘要

A connecting structure for a drill collar of a measurement-while-drilling instrument, and male and female connectors for a drill collar sub. The connecting structure for a drill collar of a measurement-while-drilling instrument comprises a male butt connector (1) and a female butt connector (2) matching each other. The male butt connector (1) and the female butt connector (2) are rotatable with respect to each other. Electric passages (31, 32) are formed in the male butt connector (1) and the female butt connector (2), respectively. One of the male butt connector (1) and the female butt connector (2) is provided with a multicore coaxial electric male connector (5) connected to the electric passage (31, 32), and the other is correspondingly provided with a multicore coaxial electric female connector (4) connected to the electric passage (31, 32). The male butt connector (1) is coaxially sleeved in the female butt connector (2). The multicore coaxial electric male connector (5) matches the multicore coaxial electric female connector (4) by means of insertion.