Well logging while drilling information transmission system based on double-wall drill rod

The invention discloses a logging-while-drilling information transmission system based on a double-wall drill pipe, and the system comprises a ground information processing device which is used for controlling a measurement-while-drilling process and obtaining underground information; a rotary connector; the double-wall drill rod is provided with an annular sealed space formed by an inner-layer drill rod and an outer-layer drill rod, the double-wall drill rod is connected with the ground information processing device through a rotary connector, and the annular sealed space is used for containing a logging cable connected with the ground information processing device; and the measuring short section is positioned at the lower end of the double-wall drill rod, is connected with the logging cable and is used for completing underground measurement. According to the invention, the double-wall drill rod is used as a protective sleeve of the single-core logging cable, and meanwhile, the transmission rate is high and