SLXL-3 mini type logging unit is a newly designed logging equipment for building an wellhead information integration and transmission platform for development wells, fascinating real-time on-line development well construction dynamic monitoring to improve overall development benefit. It has a compact structure, using 485 bus for data acquisition. With only a trunk line to link the well field and the equipment cabin, it's convenient for wiring installation, which has the feature of short development well construction cycle for frequent handling and dismounting.